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Pyrenomycetes of British Columbia Barr, Margaret Elizabeth 1952

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FYHEBDMYO-TES OF BRITISH CDICMBIA by MRGARET ELI2_VBETH BARE fe \ &-£ LO Wiv A THESIS SUBMITTED IH PARTIAL FUItfllMEflT OF THE REQUIP-SMEKTS FOR THE IlffiGHEE OF MASTER OF ARTS in the Department of Biology and Botany We aooept this thesis as oonforming to the standard required from oandidates for the degree of MASTER OF ARTS* Members of the Department of Biology and Botany THE UNIVERSITY OF BRITISH COLUMBIA September, 1952 > ABSTRACT The two hundred and sixty three species of Pyrenomycetea l i s t e d from British Columbia are distributed in ninety five genera as follows: Perisporiales, thirty one species in fifteen genera; Dothideales, six species in five genera; Hypoereales, eighteen species in ten genera; Sphaeriales, two hundred and eight species in sixty five genera* Forty one collections are br i e f l y described as unidentified species of their respective genera; more adequate specimens of these are needed before satisfactory determination can be made© One species, Gnomonia potentillae, and one. form, Sphaerulina Alni A.Lorr.Smith forma minor, are described as new. ACKNOVJLEDGEMENTS This study was made possible by a Bursary and two Summer Research Grants from the National Research Council, to whom I em deeply g r a t e f u l . I wish to thank Dr© F.Dickson f o r suggesting t h i s study and for his help i n the numerous d i f f i c u l t i e s encountered© Dr. T.M.C.Taylor and Miss Mary Harrington are responsible f o r assistance i n the ident-i f i c a t i o n of host plants and Mr. John Bancroft i n the preparation of piatea o I am indebted to Dr. J.W.Groves who kindly l e n t me material of B r i t i s h Columbia Pyrencmyeetes from the Mycological Herbarium at Ottawa, and to the o f f i c e r s i n charge of the Plant Pathology Labora-to r i e s at Saanichton, Summerland, and Vancouver, and of the Forest Pathology Laboratory at Victoria'. To the interested friends who brought or sent i n specimens to be added to the c o l l e c t i o n I am also grateful© TABLE OF CONTENTS Page INTRODUCTION . . i General Introduction . . . i Historical Survey . . . . . i i NATURAL FEATURES .1 Geographical Regions 1 Phanerogamic Flora......... 3 AREAS OF SPECIAL C0111_ECTING ...7 C m S R H L OUTLINE' OF PYRENOMYCETES . . 9 Delimitation of the Group 9 Keys to Orders and Families • .....10 Classification and Nomenclature .13 MATERIALS AND METHODS .15 Sources of Collections 15 Examination of Specimens*.... .....16 LIST OF SPECIES *. 1? Perisporiales 17 Hypocreales 36 Dothideales .47 Sphaeriales* • • 51 HOST INDEX 175 SUMMARY 224 REFERENCES 228 •INDEX OF GENERA AND SPECIES... *233 PLATES AND EXPiLANATIONS.. , .....248 PYRENCMICETES OF BRITISH COLIlffilA INTRODUCTION General Introduction When the collection and identification of Pyrenomycetes of British Columbia was f i r s t suggested as a mycological study, the idea vras to make a general survey and then to concentrate on one particular family. This plan was followed in part, but several fsmiles proved to have numerous representatives in the province. /Three families, the Erysiphaceae, Mycosphaerellaceae, and Pl'eosporaceae, are treated in detail as they occur. Representatives of the remaining families, although not as numerous, are keyed out and listed.^in the, same way. This survey is in no way suggested as being complete, rather i t i s a preliminary study upon which further intensive work may be based. i i . Historical Survey There has been no previous intensive collecting of Pyrenomycetes in the province* Certain collections made by John Macoun were determined by Dearness (1916, 1917), and earlier by E l l i s and Everhart (1887, 1891, 1892, 1898)» References to those specimens described or mentioned have been included in this l i s t . The Dominion Laboratories of Plant Pathology at Summerland, Saanichton and Vancouver, the Dominion Laboratory of Forest Pathology at victoria, and the Provincial Plant Pathologists have contributed records of plant and forest pathogens. These records, published in the Canadian Plant Disease Surveys from 1920 to the present, have been studies; the prevalence of those fungi in the province i s reported as obtained from the surveys. Any other references found in the literature are also included, in order to make this l i s t as complete as possible. 1 NATURAL FEATURES Geographical Regions British Columbia extends from the 49th parallel to the 60th parallel of latitude and from the crest of the Rocky Mountains west to the Pacific Ocean* The eastern boundary of the province follows the axis of the Rockies to the 54th parallel and follows longitude 120° from there to the 60th parallel of latitude* Between 55° and 60° latitude on the west, the Panhandle of Alaska cuts off the province from the ocean* It is roughly 760 by 470 miles, and covers an area of 355,855 square miles* British Columbia is predominately mountainous. The Rocky Mountains on the east form the northern end of the Cordilleran belt, consisting of the upturned edges of the strata underlying the Great Plains on the east, chiefly alluvial and carboniferous limestone. They .-range in height from an average of 8000 to 10,000 feet; some peaks reach 13,500 feet in the south of the province. The Rocky Mountain trench extends throughout the length of the province, with variation in width from 2 to 15 miles* The Columbia mountains extend from the United States to the Eraser River, latitude 53° 45', with an average width of 80 miles, to form the western rim of the trench* The Columbia system includes the Purcell and Selkirk trenches in the south and the Cariboo Range, the Peace and Stikine Mountains in the north* The central region of the plateaux and mountains, 200 miles wide, is a much dissected and eroded tableland, with soil composed of disintegrated lava and glacial grift* The topography is characteristically of two types: deep-cut U-shaped valleys 1000 to 2000 feet above sea l e v e l , occupying one-third of the area, and r o l l i n g upland plateaux, 3500 to 5000 feet in elevation* The Coast Range, 6000 to 7000 feet high and about 100 miles wide, forms a barrier between the Interior Plateau and the ocean* These mountains are composed of massive crystalline rocks of an ancient period© West of the Mainland l i e s the pa r t i a l l y submerged Island Range, which forms an archepelago of islands, including Queen Charlotte and Vancouver Islands* The deeply submerged Coastal Trench l i e s between this range and the Mainland, forming the system of fiords and straits characterizing the B r i t i s h Columbia coast© The climate of Br i t i s h Columbia i s chiefly influenced by the Japan Current, the eleven degrees of latitude thro ugh which the province extends, end the extremes of altitude from sea level to the highest mountain peak at 13,5000feet* Waxm moisture-laden a i r currents sweep inland over the Japan Current, are c h i l l e d i n ascent of the western slope of the mountain ranges and there deposit their moisture* This produces alternating wet and dry belts, andmoderates e_tremes of temperature* The Lower Coast Belt i s characterized by mild, even temperatures, and precipitation of 60 to 70 inches, of which one-third occurs during the summer months* The North Coast Belt averages about 5° lower i n mean temperature and has a precipitation of 110 inches, with a part of the winter precipitation as snow* The Interior Plateau or Dry Belt shows greater variation i n temperature, with means from 14° in January to 67° i n July, and a limited precipitation of 11 to 13 inches* The second Wet Belt has 3. relatively the same temperature range aa the Dry Belt, hut greater pre-cipitation, from 27 to 60 inches* The Second or Columbia Dry Belt, forming the western rim of the Rocky Mountain trench, has a slig h t l y lower mean winter temperature but a mean summer temperature similar to that of the Second Wet Belt; precipitation varies from 13 to 17 inches* The Great Northern Belt i s subject to greater extremes i n temperature; precipitation •axles from 16 to 20 inches, of which nearly half f a l l s during the growing season* phanerogamic Flora The coastal region of Br i t i s h Columbia i s covered in great part by coniferous forests* The types of the forests may be characterized b r i e f l y as: 1* Douglas fir-cedar type, prevalent at lower altitudes to 3000 feet, on Vancouver Island and the Mainland, consisting of Pseudotsuga  t a x i f o l i a , Thuja plicata, Tsuga heterophylla, Abies amabilis, Pinus monticola, and Picea sitchensis* 2* Giant cedar-hemlock type, at a higher altitude and north of the coastal type, to 4000 feet, consisting of Thuja plicata, Tsuga heterophylla, Abies amabilis, Picea sitchensis, Chamaecyparis nootkatensis, and Pinus  monticola* 3* Western hemlock-Sitka spruce type, on the Queen Charlotte Islands and North Coast, consisting of Tsuga heterophylla, Picea sitchensis, Thflja  plicata, Chamaecyparis nootkatensis, and Abies amabilis* 4* Hemlock-white f i r type, at higher altitudes and on more exposed sites, chiefly Tsuga heterophylla and Abies amabilis, with some Picea  sitchensis, Thuja plicata, and Pinus contorts* 5* Sub-alpine type, above the hemlock-white f i r type and below timber l i n e , consisting of Tsuga Jdertensiana, Abies lasiocarpa, Pinus 4* contorts, Pleea aitehensis and Tsuga heterophylla. The underbrush consists mainly of Gaultheria shallon, Olopanax horrida (Echinopanax horridum)» Rubus speetabilia; ferns include Polyatiehum, Adiantum, Dryopteris, Poly- podium, and Pteridium spp. Deciduous trees i n the coastal region include Acer macrophyllum, A* circinatum, Rhamnus Purshlana, Arbutus Menziesii, Alnus oregona, Onerous Garryana, Populus trlchocarpa, Salix spp., Betula spp., Prunus spp* The semi-desert or drybelt regions of Bri t i s h Columbia are character-ized by the scarcity or absence of trees and predominance of grasses, sagebrush, golden rod, balsam root, and other xerophytic plants* There are three main drybelt regions: the Columbia-Kootenay area, the Olainagan-Similkameen area and the Fraser area, including the Thompson Valley* Within these regions grow the natural grasslands of Bri t i s h Columbia* -Spring plants ere numerous and varied, short-seasoned in the b r i e f time after the snow melts and before the s o i l becomes dry* They include F r i t i l l a r i a pudica,  Calochortua maerocarpus, Phacelia leucophylla, Balsamorhiza sagittate, Clematis l i g u e t i e i f o l i a , and Lewisla redlviva* The semi-desert f l o r a includes Artemisia tridentata, Opuntia polyacantha, Blgelovia dracunculoides.  Asclepias speeiosa, Mentzella laevicaulis, Luplnus spp., Astragalus spp» Shrubs and trees include Amelanchier f l o r i d a , Acer glabrum, Rhus glabra,  Corylus californica, Betula glanduloaa, B* fontinalis, Salix spp., Populus  tremuloides, Prunus demissa. The grasslands are distinguished as: •11* Open grasslands, (a) where sagebrush predominates, species of Agropyron, Koeleria, Festuea, Stipa, Aristida and Poa, a l l tufted perennial deep-rooted forms; (b) where grasses predominate, as well as the above-mentioned, Bromus, Elymus and Calamagrostis, with creeping rootstocks; 5 o with these grow Lupinus, Astragalus, Geranium, Plantago, and Juncus spp. 2* Wooded grasslands, (a) Douglas fir-grassland areas: grasses are much as i n the open grassy regions, with fewer bunch grasses, and with the addition of Mellca, Jestuca, and Lathyrus; (b) Jackpine-grassland areas: mainly Calamagrostis, Koeleria, and Stlpa; (c) cottonwood-grassland, differing very l i t t l e , but with the addition o f numerous legumes* Dry belt and mountain forests are divided into four types: 1* Yellow pine, from 2000-3000 feet on slopes of benches; Pinus  ponderosa i s found in almost pure stands, mixed with Pseudotsuga t a x i f o l i a near i t s upper l i m i t ; Juniperus scopulorum, Ceanothus velutinus, 0* san-guineus, Penstemon; scouierii at» numerous; with and above Douglas f i r at the higher levels axe found Pinus contorts and Picea Engelmannio 2* Mixed forest, i n the Kootenay d i s t r i c t , where Larix occidentalia i s found with Douglas f i r between the yellow pine and the spruce-lodgepole pine types* 3* Montane forest from3000 to 6000 feet, i n whose open park-like slopes herbaceous plants are abundant: Erythronium, Arnica, L ilium,; Sedum, Erigeron, Lappula, Delphinium, Polemonium, Penstemon, Brodiaea, C a s t i l l e j a , Aquilegia, Heracleum. .Zygadenus, Claytonia, Spiraea, and numerous others* 4*Subalpine forest and meadow; timberllne forest and mountain meadows consist of stunted Pinus contort a, P* albicaulis, Abies ^aslocarpa, with grass species of Agrostis, Phleum, Danthonia, Trisetum, Koeleria, Bestuca, and numerous herbaceous plants including Valeriana, PastilleJ a, Senecio, Lupinus* The forests in the second wet belt resemble those on the coast, with the same transition in types* The range of tress passes from almost pure Thujavpllcata on the river-bottoms to a mixture of Thuja plicata and Tsuga  heterophylla, f i n a l l y changing into Tsuga he ter ophyll a-P ice a Engelmanni-Thuja plicata type or the subalpine (Picea BngelmannirPinuB, contorta) type from 4000 to 6000 feet. The northern sub-arctic or spruce-pine type i s a continuation of the great forest area that sweeps across Canada, lying between the tundra and the plains or pine-hardwood forests. It consists of Pinus contorta, Picea canadensis, and P. mariana, changing to P. Bngelmanni farther south. Alpine regions are found on most Br i t i s h Columbia mountains above 5500 feet. Subalpine association of ericaceous shrubs, such as Rhododendron,  Phyllodoce, Casslope, Cladothamnus, and Jaccinium, as well as Spiraea, Caltha, and Trolllua, extend from 4000 to 6000 feet. Small lakes are abundant, with their flora of Kalmia, Gentiana, Parnasaia, Menyanthes. The l a s t trees are Abies lasiocarpa, Pinus albicaulis, and Tsuga Mertensiana, with Larix L y a l l i i in a few l o c a l i t i e s . The arctic-alpine zone i s character-ized by Silene acaulis, Artemisia norveglea var* pacifica, Phacelia sericea,  Phlox Douglasii, Bnpetrum nigrum, Loiseleuria procumbens, Gentiana calycosa,  Anemone occidentalls, Saxifrage Tolmiei. Rock slides are clothed by Sedum divergens, Juniperus,slberica, Lupinus arcticus, and Polemonium conferturn* Gravelly creek banks and sand bars are covered with Mimulus Lewlsii, M. alplnus, PetasitesVfrigidua, Eplloblum latifolium. Lupinus spp., Cas t i l l s J a spp.,, Valeriana sitchensis, Pedicularla bracteosa, Aquilegia formosa, Vernnica Wormskjoldii, Veratrum viride, and numerous sedges and rushee abound on alpine slopes* 7, AREAS OF SPECIAL CC-J-ECTING The size of the province renders impossible any comprehensive survey at present; rather representative areas were covered a* thoroughly as possible* Certain l o c a l i t i e s have been f a i r l y intensively studied, either because of their convenience or because a few days were spent i n the area. These areas include the campus of the University of Br i t i s h Columbia, the environs of Vancouver, the v i c i n i t y of Duncan and Saanichton on Vancouver Island, the open parklands of the interior of British Columbia between Pentieton and Salmon Arm, and an alpine area in the Ashnola d i s t r i c t , i n the southern part of the province* These l o c a l i t i e s w i l l be described i n somewhat more detail than the generalized regions of the province* The campus of the University of B r i t i s h Columbia i s situated on Point Grey, a point of land to the west of Vancouver cut off by English Bay on the north and the Gulf of Georgia on the west* The campus i s planted with a number of native and introduced trees, shrubs, and herbaceous plants, Qiany of which were examined in the search for fungi* Further collections of fungi were made in woods and gardens in the cit y * A t r i p to Mount Seymour, altitude 4758 feet, in the d i s t r i c t of New Westminster, yielded other representatives which approached the alpine type of fungi* Beaches near Vancouver gave a few fungi on casual examination* The areas on Vancouver Island, Duncan and Saanichton, are drier and hotter in the summer than Vancouver* Duncan i s situated in a valley on the Cowichan River, forty miles north of Victoria. It i s largely a cleared area, with small farms and some second growth of trees* Numerous collections were made of dead herbaceous stems in the spring. The Dominion ___perimental Farm near Saanichton on the Saanich Peninsula provided an area for collection amidst 8, small f r u i t and market gardens* The observations of Mr. w* Jones and Dr. W. Newton in this l o c a l i t y have resulted in a Check L i s t of plant parasites, of which those remarks pertinent to this study have been includede The drybelt region of the province, with i t s typical f l o r a , provided other fungi, especially among the Brysiphaceae, which are general i n those areas* Collections were made from the dry clay benches to the west of the cit y of Penticton, where Artemisia, Opuntia, and bunchgrasses were dominant* The parklike area north of Vernon up to Salmon Arm, with Pinus ponderosa the prominent feature of the landscape, provided other specimens* Around Lumby and the Shuswap Fa l l s , the somewhat wetter l o c a l i t y gave another type of f l o r a and different fungi* The area known l o c a l l y as the Cathedral Lakes in the Ashnola d i s t r i c t , south of Keremeos, was the most f r u i t f u l i n numbers of Pyrenomycetes collected* This l o c a l i t y varies in altitude from 6500 feet to 8300 feet© Several small a&pine lakes are situated between the ridges, which at the time of exploring, early in August, were clothed with b r i l l i a n t alpine flowers* Moisture was abundant on the north and east sides of the ridges, where the snow s t i l l remained in sheltered patches* To the south and west of these ridges, vegetation was i n a more advanced condition and often dried out* Collections of dead stems>and leaves of the herbaceous plants yielded many fungi, typically alpine and arctic in distribution* Most common were species of Mycosphaerella, Pleoapora, and Leptosphaeria* A glance at the map of Br i t i s h Columbia shows that the l o c a l i t i e s men-tioned are scattered through, the southwestern part* The greater part of the province i s represented by only a few scattered collections© GEN-SAL OUTLINE'. OF. PYHENOMYCETES  Delimitation of the Group The Pyrenomycetes comprise a large group of Asec_ycetes in which the asci are borne in a closed fruiting body, the perithecium, which opens by a round or elongated ostiole or lacks an ostiole and then ruptures ir r e g -ularly* Mycelium i s septate, hyaline or dark colored* Perithecia are globose, conical, hemispherical or flattened* The perithecium may be superficial, with or without hyphel strands at the base, may be pa r t i a l l y iiamersed or completely immersed in the substratum and then sometimes part-i a l l y or completely erumpent at maturity; or i t may be imbedded in a stroma composed of mycelium or a mixture of mycelial and host tissues* In one order perithecia are lacking; the asci arise in locules in the stroma which lack a definitely differentiated wall* Paraphyses or pseudoparaphyses, interthecial threads, are usually present between the asci, although in certain genera or families they may be lacking© Periphyses, hairs l i n i n g the upper wall and ostiole of the perithecium, are often present* The asci: arise from the base or sides of the perithecium, and may be globose, ovate, clavate or cylindrical, stalked or sessile, thin- or thick-walled, usually eight-spored, or with more or less spores* Spores are of various shapes, colors, and sept at ion© The imperfect stages-of many, of these fungi have been connected with the ascigerous stage; they belong to numerous form genera of the Fungi Imperfect!© 10. Keys to Orders and Families For the purpose of t h i s paper the following key to the orders and families of Pyrenomycetes i s given. Perithecia either globose and without ostiole or hemispherical and opening by an ostiole .... .PSRISPOIlIAt-SS Perithecia more or less globose, without ostiole and opening irregularly, wall entire. Aerial mycelium white, perithecia (cleistothecia) with appendages... 1. Brysiphaceae Aerial mycelium lacking or dark-colored, perithecia without appendages.......... . . . . . . . • • . • • 2 . Perisporlaceae Perithecia f l a t or hemispherical, opening by a round pore at the apex, wall/often lacking below. . 3 . Mlcrothyriaceae Perithecia globose or e l l i p s o i d , with differentiated ostiole. Perithecia delicate, l i g h t colored or colorless,occasionally brownish, never black and hard .B^OCREALIS Perithecia superficial; stroma present or absent...4. Nectriaceae Perithecia p a r t i a l l y to entirely iom^ a stroma or stramatic base. .........5. Hypoereaceae Perithecia either lacking or firm and dark colored. Fruiting body without perithecia, formed in a stroma as ascigerous locules.. IX)THII_5Uu_ES Here considered as one family .6. Dothideaceae Perithecia with definitely differentiated, membranaceous, leathery or carbonaceous walls, with or without stroma.•••••• ••<>•. SPBA__3IAI__ Perithecia wholly or partly superficial* Subiculum lacking or arachnoid* Perithecial walls membranaceous* Perithecia hairy, especially above, asci evanescent.......7. Chaetemiaceae Perithecia naked or setose, asci discharging spores forcibly...8* Sordariaceae Perithecial walls coriaceous or carbonaceous* Mouths of perithecia papillate* Perithecia setose or hairy.. * « ...........9« Trichoaphaeriaeeae Perithecia naked* »*»10* Melanommeae Perithecia with long, of t e n h a i r l i k e beaks...................ll* Ceratostomataceae Stroma present or perithecia #ore or less deeply sunken In substratum at bases* Stroma present; at maturity perithecia either free or remaining p a r t i a l l y immersed i n i t * Stroma not limited, perithecia mostly free at maturity, globose to conical, ostiolate.. .....12© Cucurbitarlaceae Stroma sharply defined; perithecia (aeco-carps) elongated into slender cyl i n d r i c a l columns as lobes from the stroma; true ostiole lacking*. 13* Coryneliaceae Stroma lacking; bases of perithecia only persistently Immersed* 12 © Mouths of perithecia circular..............©. ...14o Amphiaphaeriaceaa Mouths of perithecia compressed) s l i t -l i k e . .............•••••.15. Lophiostomataceae Perithecia Immersed i n substratum or stroma, with ostioles or necks only projecting, or at maturity becoming nearly superficial* Perithecia immersed in substratum; stroma lacking or poorly developed. Mouths of perithecia mostly papillate or plane; periphyses lacking. Perithecia membranaceous to coriaceous. Asci fasciculate, without paraphyses...©. ..................16. Mycosphaerellaceae Asci not usually fasciculate, para-physes or interthecial threads present.• ......17. Pleosporaeeas Perithecia coriaceous to carbonaceous; spores large, mostly with gelatinous coating......©© .............................18. Maasarlaceae Perithecia usually beaked; periphyses present* Perithecia without clypeus...19. Gnomoniaceae Perithecia covered with a shield-like crust (clypeus) 20. Clypeosphaeriaceae Perithecia typically immersed in stroma. 13. Stroma composed of mixed host and fungus elements. Conidia borne in cavities in the Stroma........... .........21. valsaceae Conidia borne superficially on surface of stroma.................22. Melanconidaceae Stroma composed wholly of fungus elements. Ascospores small, cylindrical, usually allantoid, hyaline to yellow-brown. (Stroma present only in the conidlal stage in Calosphaeria).......23. Diatrypaceae Ascospores various but not as above. Conidia typically borne in hollow chambers in stroma; ascospores one-to many-celled, hyaline or brown........ ....................24. Melogrammataeeae Conidia borne in superficial layer on surface of young stroma; ascospores one- (rarely two-) celled, blackish brown .25. Zylariaceae Classification and Nomenclature In general the classification of fungi in this l i s t follows that of winter in Habenhorst's Kryptogamen-ELora. Keys to families are taken from Lindau's Pyrenomycetineae in Engler and Prantl's Naturlichen Pflanzen-familien, with some slight changes. The exceptions to Winter's classification are due to more recent monographic treatment of certain groups. The Erysiphaceae are treated according to Salmon's monograph (1900) of the 14e family. Seaver's monograph (1909, 1910, 1911) of the Hypocreales i s followed; where the names used differ from the generally accepted names, both are included. Members of the Dothideales and Perisporiales (with the exception of the Erysiphaeeae) have been l i t t l e collected so that differences of opinion concerning their classification are not particularly important 0 The Coryneliaceae, with one species represented i n this province, are retained in the Sphaeriales following Lindau's treatment of the group; that position i s not correct according to the recent studies of Fitzpatrick (1942). As far as possible to avoid confusion due to synonymy, where more than one name i s i n use, a l l are included. The generally accepted name i s employed as the legitimate one. No new combinations o f names have been made, so that i n the genus Mycoaphaerella,both that generic name and Sphaerella are l i s t e d ; the same i s true for Guignardia and Laestadia, Pleospora and Pyrenophora. Determinations in nearly every case were made from descriptive l i t e r -ature. Only a few species were available for comparison, so that the majority represent the writer*s idea of the species entirely. Further study w i l l probably result in alteration of some of these determinations* 15, MATERIALS AND, METHODS Sources of Collections Specimens listed in this paper were taken from several sources* A few references from literature have been included; where specimens have not been examined* the fact is noted* The collections of the Dominion Laboratories of Plant Pathology at Saanichton and Summerland have been studies* These collections constitute the majority of the parasitic Pyrenomycetes, chiefly among the Erysiphaceae* The herbarium of the Dominion Laboratory of Forest Pathology at Victoria has yielded parasitic and saprophytic fungi on both coniferous and deciduous trees* Wherever sufficient material was available, duplicates of these collections were placed in the Mycological Herbarium at the University of British Columbia© Collections have been made by the writer in localities previously described* Specimens from these areas are deposited in the University Mycological Herbarium. In addition many specimens have been examined from the Phanerogamic Herbarium-; at the University, with the kind per-mission of Dr* T.M.C. Taylor* From these specimens dead stalks and leaves were removed and examined* Those bearing Pyrenomycetes are now in the University Mycological^ Herbarium* From the Mycological; Herbaritia at Ottawa Dr. J.W. Groves contributed collections of British Columbia Pyrenomycetes* Although not numerous, these collections are valuable in that they include collections made by John Macoun, with certain type end rare specimens* The collection numbers listed are preceded by a letter denoting the Herbarium in which they are to be found* The following abbreviations have been used* 16o H - Mycological Herbarium of the Department of Biology and Botany, University of British Columbia, Vancouver, B.C. 0 - Mycological Herbarium, Division of Botany and Plant Pathology, Science Service, Department of Agriculture, Ottawa, Ontario*, OM - From the Mycological Herbarium at Ottawa, but collected by John Macoun and either bearing his collection numbers, or unnumbered* S - Herbariuft of the Dominion Laboratory of Plant Pathology, Summerland, B.C. U - FCrest Pathology Herbarium, University of British Columbia, Vancouver, B.C. 7 - Herbarium of the Dominion Laboratory of Forest Pathology, Victoria, B.C. Examination of Specimens A l l collections were examined with the aid of a low-power microscope* In the case of strcmatic foms freehand sections were out and examined, while single perithecia were removed bodily and flattened between slide and cover glass* Cameralucida drawings were made of asci and spores, as well as any other diagnostic feature, for each species* Measurements were taken of peritheeia or locules, of asci and spores. The sizes are given as the range of a number of measurements. Each species was described when fir s t seen, and in further collections notes were made of any variation from the previous collection or from the published description* 17. LIST Off SPECIES The Pyrenomycetes found in Br i t i s h Columbia are l i s t e d i n the families delimited on page 10. A brief characterization of each family i s giveno Genera and species are l i s t e d i n alphabetical order. In families where more than one genera are noted, a key i s given to the genera. Again, genera with several species have been keyed out, i n an effort to make this study of practical use in the herbarium. Species mentioned In the literature as collected i n this province are included under their genuso Those species collected Only in the imperfect stage are also l i s t e d under the name of the perfect stage and the stage of the collection i s noted. PBRISPORIALES Perithecia either lacking an ostiole and opening irregularly, or with a conical or plane ostiole, membranaceous, coriaceous or carbonaceous, usually without stroma, but often seated on strongly developed, permanent mycelium, always superficial; asci variously shaped, mostly aparaphysate; spores variously shaped and colored. 1. Erysiphaeeae Perithecia globose, membranaceous, without ostiole, brown or black, with variously shaped appendages; mycelium superficial, white or light brown, sending haustoria into the epidermal cells of the host; conidia preceding the perithecia, abstricted from conidiophoresbasipetally; asci one or several, oblong, ovate or globose, two- to eight-spored; spores oblong or oval or e l l i p t i c a l , hyaline, granular; paraphyses lacking; parasitic on l i v i n g plants* 18. Perithecia containing a single - ascus* Perithecial appendages mycelial, filiform«.««»»»..,»....».Sphaerotheea Perithecia! appendages several times dichotoinously branched near the tips*•••• .Podosphaera Perithecia containing more than one ascus* Perithecial appendages simple, not branched, or i f branched, once only and not ornate* Appendages uncinate at apex, simple or branched**«..«»«.*Uneinula Appendages not uncinate* Appendages similar to mycelium, simple or irregularly branched* «Brysiphe Appendages equatorial, r i g i d , with a bulbous base • ••••*•••••..**•• * * ....»».Phyllact i n i a Perithecial appendages branched at apex in a definite manner, often ornate••• ••...•••••.•••••••••••••••••.•••«.•«• *__crosphaera Erysiphe Hedw.f* Perithecia globose, or globose-depressed; asci several, two- to eight-spored; appendages floecose, simple or irregularly branched, sometimes ob-solete, usually more or less similar to the mycelium and interwoven with i t * Perithecia large, 135-280 ;u diameter; spores not developed on l i v i n g plants..• •• «B* gramlnls Perithecia smaller, up to 175, rarely 230 p. diameter; spores developed on l i v i n g plants* Asci 2-spored (rarely 3-spored) B. cichoracearum Asci 3- to 8-spored* 19 On female catkins of alder; asci numerous. 20-42,...«E* aggregata On numerous hosts, but not alder catkins; asci few* 2-8, or rarely up to 22 ,,E. polygon! E. aggregata,(Pk.) ffarl. (Plate I, fig.1) Perithecia amphigenous, 130-230 u diameter; appendages numerous; asci numerous, 20-42, 80-115 x 30-40 u; spores 8, rarely 7, rounded, 16-20 x 10-15 ja. On catkins of ALnus sp., N.Saanich, leg. W.Jones (H-302). E. e ichor ace arum DC. (Plate I, f i g . 2) Perithecia amphigenous, 80-140 p. diameter; appendages variable, brown or hyaline; asci 4-25, narrowly to broadly ovate, more or less stalked, 58-90 x 30-50 p.; spores 2, 20-28 x 12-20 ju. On Aster MacCallae Rydb., Enderby, l e g . G.E.Woolliams (S-30); A. novae-angliae L.(CPDS 1954)% Aster sp., Summerland, leg. G.E.Woolliams, (E-1671, H-1569); Calliatephus sp. (CPDS 1933, 1937); Chrysanthemum sp. (CPDS 1930); Cucumis spp. (CPDS 1937, 1940, 1943, 1945); Delphinium sp. (CPDS 1926, 1937); Lactuca scariola L., Penticton, le g . G.E.Woolliams (H-1593), Summerland, leg. G.E.WofiHiems (H-1603); Oenothera sp. (CPDS 1925); Penstemon sp• (CPDS 1934); Phlox sp., Agassiz, l e g . T.G.Afckinson (H-1879), Powell River, leg. W.Jones (H-791), Sumas, leg. W.Jones (H-789), Summerland, leg. M.E. Welch (H-1599), Yancouver, leg. B.Lawson (H-83, H-1485); Plantago major L., Agassiz, leg. W.Jones (H-790), Kelowna, leg. G.E.Woolliams (H-1571), Shawnigan Lake, leg. W.Jones (H-303); Rudbeckla l a c i n i a t a L«, (CPDS 1934, 1940); Solanum nigrum L., Kelowna, l e g . G.E.Woolliams (H-1575), Summerland, l e g . G.E.Woolliams (H-1602); Solldago sp., Vancouver, l e g . F. Diekson (H-952); Zinnia elegans (CPDS 1936). 20o B* graminis DC, (Plate I, fig.3) Perithecia usually, epiphytous, large, 135-280 u diameter, more or less immersed in the lanuginosa persistent mycelium; asci numerous, 9-30, cylindrical to ovate-oblong, stalked, 70-108 _• 25-40 p; spores 8 (rarely 4), 20-23 _ 10-13 n. On Agrppyron  repens (L.) Beauv*, N.Saanich, leg* W.Jones (H-792), Agassiz, (CPDS 1949); Avena,satlva L* (CPDS 1930, 1939); Pactylls glomerataaL*, N.Saanich, lego W.Jones (H-3Q5, GPDS 1934, 1935, 1939); Hordeum vulgare L.. Sidney, leg* W.Jones (H-304| CPDS 1934, 1937, 1939, 1940); Hordeum sp 0, Cloverdale, leg. I.CMaeSwan (H-28}; Poa ap., Langley, leg* W.Jones (H-306); Sec ale cereale L*, Hatzic, leg* W.Jones (H-793, GPDS 1939); Triticum aestivum L., Vancouver, leg. I.C.MacSwan (H-1486| GPDS 1928, 1930, 1933, 1935, 1937, 1939, 1940)* , B* polygon!,DC* (E* communis Grev*) (Plate I, fig.4) Perithecia smphi-genous, 65-180 u diameter, appendages variable; asci 2-8 (rarely up to 22), ovate to subglobose, stalked or sessile, 46-72 x 30-45 p.; spores 5£8, 19-25 x 9-14 1^© On Aquilegia formosa Pisehc, Brentwood, leg* W.Jones (H-308), Summerland, leg* D.L.Mcintosh (H-956)> leg. M.F»Welch (H-1591), Invermere, leg* H.R-McLarty (S-152); Brassies oleraoea L* var.acephala DC*, Sidney, leg. W.Jones (H-307); Comandra pallida DG*> L l l l o o e t , l e g . B.Lawson (H-966); Delphinium sp*, Summerland,leg* G.E.Woolliams (H-1648, S-73); Lathyrus  ochroleucus Hook*, Tranquille, leg, V.C.Brink (H-1543); Lotus dentlculatus (Drew) Greene (Hosaekia denticulate Drew) (CPDS 1931); Luplnus polyphyllua Llndl*, Sidney, l e g . W.3ones (H-309); L* perennis L*« Summerland, leg* G.E.Woolliams ( S - l ) , Lupinns sp., Crawford Bar, leg* G.E.Woolliams and J*W* Eastham (H-1679); Matthiola sp* (CPDS 1938); Pi sum sativum I*, Duncan (H-1886) 21. Li l l o o e t , l e g . B.Lawson and G.E.Woolliams (H-1693), Rocky Point, Vancouver Island, l e g . W.Jones (H-325), Invermere, leg. H.R.MeLarty (S-151); Pisum sp., Dewdney, leg. W.Jones (H-794), U.B.C., leg. F.Dickson (H-173); Polygonum  avieulare L., Kelowna, leg* G.E.Woolliams (H-1573), Summerland, leg* M.F. Welch (H-1600); P. erectum L.g Salmon Arm (H-1893), P* ramosisslmum Michx. , Kamloops, leg* A.F.Szczawinski (H-1890)A, P. Persicarla L* (CPDS 1925); Polygonum sp*, Notch H i l l , leg* B.Lawson (H-1705); Trifolium hybridum L*, Stone Creek, leg* G.E.Woolliams (5-363); T. pratense L»« Agassiz, leg* W.Jones (H-310), U.B.C., leg. R.St ace-an ith (H-1373) * -Eryslphe:sp* Not seen, reported in CPDS on Antirrhinum sp*, Artemisia sp*, Rhus sp* (Rhubarb)* Microsphaera Lev* Perithecia globose to globose-depressed; asci several, two- to eight-spored; appendages several times dichoto-ously branched at the apex* Tips of some or a l l of the ultimate branches of the appendages i?e curved. Appendages long, flaccid; apex Irregularly branched.............•••••• •• *_* alni var• vaccinll Appendages shorter, not flaccid; apical branching closer and regular ••• *M* alni Tips not recurved* Branching of the appendages lax, irregular, forming a narrow fork... * .M. diffusa Branching closer and regular, apex widely spreading****.....*..**.**** »M* alni var* loalcer&e 22. M. alni (Wallr.) Salm. (Plate I, fig.5) Perithecia amphigenous, 66-135 u diameter; appendages hyaline or amber-colored, apex 3-6 times dichotamously branched, tips of ultimate branchlets recurved; asci 3-8, ovate to ovate globose, 48-70 x 32-50 n, short stalked; spores 4-8, 18-23 x 10-12 u. On Qnercua Garryana Dougl., U.B.C, leg. F.Dickson (H-1799)© M. alni (Wallr.) Salm.f var. lonicerae (DC.) Salm. (Plate I, fig.6) Differing from M.. a l n i i n the more loosely branched apex, with the tips of the ultimate branches straight. Salmon (19003 145) states that this variety i s confined to Europe; however the straight appendages of the collection would place i t here rather than in M. a l n i . On Lonicera sp., N.Saanicb, leg. W. Jones (E-768). M. a l n i (Wallr.) Salm. vex. vaccinii (Schw.) Sal$U (Plate:I, fig.7) Appendages long fl a c c i d , apex more irregularly branched than in M. a l n i . On Chlogenes hispidula (L.) Torr. & Gr., Agassiz, leg. H.H.Ross (H-1449). M. diffusa Qke. & Pk. (Plate I, fig.8) Perithecia amphigenous, 55-126 n diameter; appendages variable in number and length, apex 3- to 5-times dichotcmously branched, tips not recurved; asci 4-9, 48-60 x 28-30 /u, ovate-oblong, short stalked; spores 3-6, 18-22 x 9-H u. On Symphorieaxpos  albua (L.) Blake, very common; Carlin, leg. G.E.Woolliams (H-l719), Fraser Valley, l e g . W.Jones (H-530), Kelowna, leg. G.E.Woolliams (H-1572), Notch H i l l , l e g . B.Lawson (H-965), Summerland, leg. M.F.Welch (H-l598, H-964), U.B.C, le g . B.Lawson (H-963). Phyllact i n i a Lev. Perithecia large, globose-depressed to lenticular; true appendages 23. equatorial, r i g i d , acicular, with a bulbous base; apex of perithecium with a mass of densely crowded branched outgrowths from the epidermal ce l l s ; asci many, two- or rarely three-spored* P. corylea (Pers.) Karst. (Plate I, fig.9) Perithecia usually hypophyllous, 140-350 n diameter; asci 5-45, subcylindrical to ovate-oblong, 60-105 x 25-45 n, more or less stalked; spores 2, rarely 3, 30-42 x 16-25 ji» On Alnus oregona Nutt., Prairie Valley, Summerland, lag* G.E.Woolliams (S-7, CPDS 1933); A. sitchensis Sarg., Summerland (CPDS 1952); Amelanchler  a l n i f o l i a Nutt., Oyama, leg. G.E.Woolliams (H-l718); Cornus N u t t a l i i i Aud», Vancouver, l e g . J.E. Bier (U-13), N.Saanich, l e g . W.Jones (H-761), leg. I.Mounce (V-2171), Cowichan Lake, l e g . H.E.Foster (V-569, V-2092); C. pubeseens Nutt., Sidney, l e g . W.Jones (H-350), Summerland, l e g . G.E.Woolliams (S-128); C. stolonlfera Michx., Summerland, leg. G.E.Woolliams (S-3, CPDS 1932); Corylus sp«, Cloverdale, leg. B.E.Fitzpstrick (H-961); Crataegus sp., Carlin, leg. G.E.WooU iams (H-l717), Metchosin (CPDS 1928); Holodlscus discolor (Purah.) Maxim. (Spiraea discolor Pursh.), N.Saanich, l e g . W.Jones (H-351) CPDS 1933) • Podosphaera Kunze Perithecia globose or globose-depressed; appendages brown or hyaline, dichotomously branched at apex; aseus solitary, subglobose; spores 8. Basal and apical appendages both present, apical usually uAbranched and blunt............... .........p. leucotrieha Basal appendages absent; others more or less spreading andfequatorially inserted; ultimate branches knob-shaped.• ..............P. oxyacanthae 24. P. leucotrieha ( E l l . & Ev.) Salm. (Plate I, fig.10) Perithecia densely gregarious. 75-96 n diameter, subglobose; apical appendages 3-11, dark brown to pale at tips, apex undivided and blunt; basal appendages sometimes nearly obsolete* sometimes well developed, short, simple or branched; ascus oblong to subglobose, 55-70 x 44-50 u; spores 22-26 x 12-14 u, crowded. On Pyrus Malus L., Naramata, le g . H.R.McLarty (H-l681), Summer-land, l e g . D.L.Mcintosh (H-1546), Vancouver, l e g . I.C.MacSwan (H-27). P. oxyacanthae (DC.) de Bary (Plate I, f i g . 11) Perithecia amphigenous, 64-90 u diameter; appendages spreading, 4-30, dark brown, apex 2-4 times dichotomously branched, ultimate branchlets rounded, knob-shaped; ascus broadly obovate to subglobose, 58-90 x 45-75 n; spores 8 (rarely 6), 18-30 x 10-17 U. On Prunus avium L., Penticton (H-1475); P. demissa (Nutt.) D.Dietr., Oliver, l e g . R.E.Pitzpatrickj and J.BJuott (H-1576); Carl i n , leg. G.E.Woolliams (H-l716); P. emarginata (Dougl.) Walp., N.Saanich, l e g . W.Jones (H-342); Prunus sp., cultivated cherry, common, L i l l o o e t , leg. B.Lawson (H-957), Trepanier, leg. R.E.Fitzpatrick (H-1592), Naramata, leg. W.R.Eoster (H-1636), Lytton, l e g . D.L .Mcintosh and G.E.Woolliams (H-l704), Penticton, leg. A.G.Carter (H-1884). On apricot (CPDS 1940), pear (CPDS 1938)• Sphaerotheca Lev. Perithecia subglobose; appendages floccose, brown or hyaline, simple or vaguely branched, frequently obsolete; ascus solitary, eight-spored. Mycelium persistent, thick, pannose, forming dense patches composed of special hyphae, in which the perithecia are more or less immersed. 25. Persistent mycelium usually satiny and shining, white, sometimes becoming grey or pale brown..... .S. pannosa Persistent mycelium dark brown. .S. mors-uvas Mycelium without these characters* Cells of outer wall of peri thee ium 10-20 jx wide, averaging 15 u.... ..Sjjjhumuli Cells 20-30 (rarely 40) u wide, averaging 25 n«....................... .S. humuli var. fuliginea S. humuli (DC.) Burr. (Plate I, fig.12) Perithecia amphigenous, 58-120 p diameter, cells averaging 15 wide; appendages variable, few or numerous, usually long, dark brown; ascus broadly e l l i p t i c a l to subglobose, rarely short stalked, 15-90 x 50-72 p; spores 8, 20-25 (rarely 30) x 12-18 p.* On iragaria sp. (CPDS 1938); Geranium viscosisaimum Fisch. & Mey., Bridesville, leg. F.R.Bewell (S-194); G i l i a l i n e a r i s Gray, Quesnel, leg. W.Taylor (H-1883); Henchera glabra Willd., Smithers, leg. J.W.£astham (H-1380); Potent i l i a  palustris Scop., Summerland,. le g . T.M.C.Taylor (H-1800); Rhus glabra L., Penticton, le g . G.E.Woolliams (H-1594), East Kelowna, leg. H.R.Mclarty (S-58), Summerland, le g . M.F.Welch (S-242); Rubus maeropetalus Doug!., N.Saanich (H-863); R. parvlflorus Mutt., U.B.C, leg. I.CMacSwan (H-1487); R. spect- ab i l i a Pur ah., M i l l Bay, le g . W.Jones (H-865I, Ladner, leg. W.Jones (H-276), U.B.C, leg. I.CMacSwan (H-1489), Agassiz, leg. H.H.Ross (H-1448); Rubus sp., raspberry, Gordon Head, le g . W.Jones (H-864); Shepherdia canadensis Nutt. (CPDS 1933); Viola Tricolor L. t Elk Lake (CPDS 1948); Viola sp. (CPDS 1937, 1944)• 26* S. humull (DC.) Burr. vaj» follginea (Schlecht.) Salra. (Plate I, fig.13) Perithecia usually smaller, 50-100 jx diameter, c e l l s larger, averaging 25 p. wide; spores 20-25 x 12-15/1, On Agoseris aurantiaca (Hook*) Greene, Bridge Lake, Cariboo, l e g . J.W.Eaathem (H-1882); A. glanca (Nutt.) Greene, Canal Flats, leg* J.g*Eastham (H-I881); Bidens cernua L», Surrey, leg* W.Jones (H-275, H-277); Cas t i l l e j a lute scene (Greenm.) Bydb., Summerland, leg.T.C.Brayshaw (H-1878), Ca s t i l l e j a sp., Lumby (H-1891); Coreopsis  grandiflora (CPDS 1940); Coreopsis sp., Summerland, leg. M.F.Welch (H-1649); Lactnea acarlolaL*, (CPDS 1925, given as S. Castagnei Lev.); L* splcata (Lam.) Hitchc., South Canoe, leg. G.E.Woolliams (S-24); Rubus sp., raspberry (CPDS 1925); Taraxacw officinale Weber, Summerland, leg. G.E.Woolliams (H-1590), Duncan (H-1887); Taraxacum sp., Summerland, leg. B.Lawson (H-82, H-960, H-958), Saanich, leg* W.Jones (H-866), Lytton, leg* B.Lawson (H-959). S* jlors-uvae (Schw.) Berk. & Curt. Perithecia amphigenous, subglobose, 76-110 u diameter, mycelium persistent, dark brown; appendages few, pale , brown, short; ascus elliptic-oblong to subglobose, 70-92 (-110) x 50-62 u; spores 20-25 x 12-15 p» On Ribes nigrum L*, Summerland, leg* B.Lawson (H-953); R. sativum, Abbotsford, leg . B.Lawson (H-1520); Ribes sp*, Salmon Arm, leg. T.Lott (H-274), Vancouver (H-1894)* S* pannosa (Wallr.) Lev* Mycelium persistent, white to pale brown; p e r i -thecia immersed in the mycelium, globose to pyriform, 85-120 u diameter, appendages few, short, pale brown; ascus broadly oblong to globose, 88-115 x 60-75 n; spores 8, 20-27 x 12-15/1. ,0n Prunus sp., peach, Summerland (H-1895); reported in CPDS on rose and nectarine* 27* Une inula Lev. Perithecia globose to depressed; appendages simple or once or twice dichotomously forked, uncinate at apex, hyaline, rarely dark brown; asci several, two - to eight-spore do Appendages colored for half their length or more Appendages colorless* Appendages a l l or nearly a l l branched..*... Appendages a l l simple© Asci 4- to 6-spored...........••••*••• Asci 7- to 8-spored..... * U» aceris (DC.) Sacc* (Plate I, fig.14, Plate 71, fig.26) Amphigenous, mycelium evanescent or persistent; perithecia hemispherical or globose-depressed, 120-225 p. diameter; appendages numerous, hyaline, thick-walled, mostly b i f i d , uncinate; asci 4-12, subpyriform or oblong, with or without short stalk, 70-95 x 45-55 u; spores usually 8, 22-26 x 13-15 u. This species i s given by Salmon. (1900:92) as confined to Europe and Asia* The f i r s t authentic record on this continent appears i n CPDS (1929:97), on Acer, N.Saanich. The appendages-are b i f i d and exactly as in Tulasne's illustrations (1931, Vol.I, PI.II, fig.2-3). On Acer agaerophyllum Pursh*, Duncan (H-1888), N.Saanich, l e g . W.Jones (H-827), U.B.C, lego I.CMacSwan (fi-1488), l e g . M.E.Barr (H-1885) • U. eireinatum Cke. & Pk. Hypophyllous, mycelium evanescent, or persistent in spots; perithecia rounded-lenticular, (125-) 160-225 u diameter; append-ages very numerous, apex simply uncinate; asci 9-26, narrowly ovate or c y l i n -d r i c a l , 68-86 x 29-40 u; spores 8, sometimes 7, 18-22 x 10-14 i^© On Acer sp., U. necator U. aceris ..U* a a l i c l s U. circinata 28. Victoria (CPDS 1928), not seen. U. necator (Sehw.) Burr. (Plate I, fig.15) Amphigenous, mycelium usually subpersistent; perithecia globose-depressed, 70-128 u diameter; appendages very variable i n number and length, 7-32 (-40), light or dark amber-brown in the lower half; asci 4-6 (-9), broadly ovate or ovate-oblong to sub-globose, 50-60 z 30-40 u; spores 4-7, 18-25 z 10-12 j i * On Parthenocissus sp., Summerland, leg* M. IT. Wei eh (H-1597); V i t i s sp., Summerland, leg.,B.Lawson (H-955)* U. s a l i e i s (DC.) Wint. (Plate I, fig.16) Amphigenous, mycelium evanescent or persistent; perithecia globose-depressed or lenticular, 90-175 u diameter; appendages usually numerous, 100-150, hyaline, apex simply uncinate; asci 8-14, rarely 4-6, elliptic-oblong or broadly ovate, stalked, 55-80 z 30-40 u ; spores 4-6, 20-26 z 10-15 u. On Myrlca Gale L., Cowichan Lake, leg. R.E. Foster, det. H.S.Jackson (H-1889, V-325); this host has not been previously recorded, however perithecia and appendages agree well, asci are broad-ovate, 69-78 z 54-60 u , spores are longer, 22-29 z 15 u» On Populus trem- uloides Mlchz., Summerland (CPDS 1940); P. trichocarpa T.& G., Summerland (GPDS 1940); Saliz spp., Summerland, leg. G.E.Woolliams (H-1568, H-1673, S-2, S-9), Tranquille, leg. V.C.Brink (H-1892), Cultis Lake, leg* H.H.Ross (H-1450), Stanley Park, Vancouver, leg* B.Lawson (H-84), South Canoe, leg* G.E.Woolliams (S-19), between Vernon and Armstrong, l e g . G.E.Woolliams (S-42)* 2. Perisporlaceae Perithecia more or less globose, black, membranaceous, without ostiole, opening irregularly at apez; aerial mycelium lacking or dark-colored, append-ages none; asci fasciculate, ovate to clavate; spores variously shaped 29. and colored; paraphyses lacking or present. Spores one-celled, brown* ••• . . . . . . . . . . . . . . . .P e t t i e l l a Spores two-eelled. Spores hyaline* . Dimerosporium Spores brown* Bases of perithecia stalked and immersed in the substrate•.*••••• .Phaeocryptopus Bases of perithecia not stalked, superficial or immersed in dark aerial mycelium* .................*Dimerium Dimerium 3aec*& Syd* Perithecia globose* membranaceous, on well developed brown mycelium; asci globose to ovate, eight-spored; spores two-celled, brown* D. alpinum W.B.Cooke (1949:609) (Plate I, fig.17) Perithecia black, membranaceous, i n a dense mycelial mat, 100-250 n diameter* hyphae of subiculurn black, thick-walled, septate; asci obclavate, 36-58 z 8.5-15 u; spores brown, two-celled, constricted at the septum, lower c e l l s l i g h t l y smaller, uniseriate to biseriate, 11.5-15 z 4.5-6 u. forming black crusts on leaves of Penstemon frutlcosus (Pursh.) Greene, Cathedral Lakes (H-l981)* Dimerosporium Fckl• As Dimerium, but spores hyaline* Spores large, 27-30 z 6-10 n..*. Spores smaller, 13-24 & 3.5-7 u D. Abietis .D. Tsugae 30* D. Abietis Dear. (Plate I, fig.18) Perithecia on branching brownmycelium, hypophyllous, densely clustered, dark-brown, 100-180 u diam.; hyphal append-ages numerous, brown, obtuse, sometimes septate, 30-80 x 4-5 ji; asci sessile, ovate, (33-) 40-60 x (15-) 21-28 fx; spores conglobate in the ascus, hyaline, one-septate, 27-30 x 9-10 a^© On Abies lasiocarpa (Hook.) Nutt., Cinema (H-1982, 7-5492); immature, with spores samaller than i n description. D. Tsugaa Dear. (Plate I, fig.19, Plate 71, fig.27) Perithecia hypo-phyllous, gregarious on thin branching anastomosing subiculurn, dark-brown, globose, 75-135 ji diameter; asci variable i n shape,; obclavate to c y l i n d r i c a l , 36-66 (-76) x 12-25 yu; spores biseriate to conglobate, hyaline, one-septate, sometimes nucleate in one or both c e l l s , upper c e l l usually larger, 13-24 x 3.5-7 j i . On leaves of Tsuga heterophylla (Rafo) Sarg., Arrowhead, leg© W.G.Ziller (H-l984, 7-6476), Cowichan Lake, leg. J.E.Bier, det. I.L.Conners (0-14363, 7-346), leg..W.G.Ziller, det. D.B.O.Savile (0-25161, 7-4604), l e g . D.C.Buckland (U-540, U-551)j Port Clements, Queen Charlotte Island, l e g . R.E.Foster, det. LL.Gonners (0-14362, H-l983, 7-348), Revelstoke, l e g . W.G. Z i l l e r , det. D.B.O.Savile (7-5731, 0-25172), Terrace, l e g . W.G.Ziller, det. D.B.O.Savile (0-25190, 7-5984). P e t r i e l l a Curzi Perithecia superficial, on brown hyphae, brown to black, globose to conical or beaked; asci ovate,evanescent, §4ght-spored; spores yellow-brown, one-celled, e l l i p s o i d or ovate© P. asymmetries Curzi (Plate I, fig.20) Perithecia globose to conical or beaked, superficial, on intertwined brown hyphal strands, brown-black, 31. 150-240 p diameter, beak up to 90 p long; asci ovate, with a slender evanescent stalk, early evanescent, 21-27 x 18p t 8-spored; spores yellow-brown, one-celled, with numerous refractive globules, e l l i p s o i d or ovate, flattened on one side, somewwith hyaline apiculum at one end, 7.5-12 x 4.5-6 ;u. Isolated from seeds of Beta vulgaris L., Armstrong, by J.W.Groves, det. E.W.Mason (0-14924); from seeds of Oucumls melo L., Armstrong, det. J.W.Groves (0-14922); from seeds of Ranhanua sativus L«, Grand Bbrks, det. J.W.Groves (0-14923). Phaeoeryptopus Naumoff Perithecia globose to depressed, base stalked and immersed i n the substrate, parenchymatous; ostiole irregular; mycelium effused, super-f i c i a l , brown; asci cylindric, eight-spored, paraphysate; spores one-septate , fuliginous. P. gaumannii (Rohde) Petrak (Adelopus Gaumannii Rohde) (Plate I* fig.21) Perithecia superficial, hypophyllous, black, membranaceous, globose, 50-75 ja. diameter; asci ovate-oblong, sessile, 18-27 x 8-15 / i , ?aparaphysate; spores crowded, greenish-hyaline, (immature), one-septate, not constricted, guttulate, 8.5-13.5 x 3-4.5 p.. On leaves of Pseudotauga taxi f o l i a (Lam.) B r i t t • , Gowichan Lake, leg. R.A.Waldie (7-561, 7-2013, 7-2014), Cultus Lake, leg. W.G.Ziller (H-1980, 7-6468), Green Timbers, leg. J.E.Bier (H-l979 , 7-2012, 7-2011), Hope, leg. W.D.Touaeau (0-7264), Kersley, l e g . G.E.Woolliams (H-1604), Pemberton, leg. W.D.Touzeau (0-7262), Saanichton, leg. LMounce (0-7263 , 0-7265), Stanley Park, Vancouver, l e g . R.E.Poster (7-2015), Vancouver Island and Eraser 7alley (CPUS 1941). 32. 3. Microthyriaeeae Perithecia flattened, or hemispherical, wall often lacking below, opening by a round pore at the apex, brown to black, membranaceous, often of radiating mycelium; aerial mycelium dark-colored or lacking; asci globose, orate or clavate, fasciculate, usually eight-spored; spores variously shaped and colored; paraphyses lacking or present. Spores o n e - c e l l e d . . . . . . . . . . * A a t e r u l a Spores two-celled* Spores hyaline to greenish or yellowish* Aerial mycelium pre sent•••••••.••••..••••••••••••••••** *Asterella Aerial mycelium lacking* Scores unequally two-celled, yellowish*»«.*-•• ********Stigmatea Spores equally two-celled* hyaline..........» *»»Mlorothyrium Spores brown* ....*..... ..*•••••• ..*.....•••• .Asterina Asterella Sacc* Perithecia globose, depressed or lenticular, membranaceousj ostiole circular; seated on spots of black radiating subsuperficial mycelium; asci mostly eight-spored, globose or e l l i p s o i d ; spores two-celled, hyaline to subhyaline;.paraphyses lacking© Spores large, 9-12 x 3-4/-•••••.••••••••••••••*.• .*»*•«*A* Gaultheriae Spores smaller, 7*5-9 x 2-3 p.*.................*.*•...... *A* Hellebori A* Gaultheriae (Curtis) Sacc* (Plate I, f i g . 22) Perithecia brown to black, flattened, slightly raised i n the centre, hypopnyllous, 170-300 ja. diameter; mycelium brown, radiating around the base of the perithecium; asci orate, 33. 21-25 x 13-16.5 p. (elongating at maturity), aparaphysate; spores hyaline, 2-eelled, obovate, upper c e l l broader, 9-12 x 3-4 pe On leaves of Gaultherla Shallon Purah., Crofton (H-1985). *A* THellebori Rehm (Plate I, f i g . 23) Perithecia small, globose, black, membranaceous, 90-105/1 diameter; surrounded at the base with septate, branched, brown hyphae; asci clavate, sessile, (18-) 36-45 x 4.5-7.5 u; aparaphysate; spores clavate, 2-celled, biseriate, hyaline, 7*5-9 x 2-3 u . On Astragalus Macounil Rydb., Cathedral Lakes (H-2007}; no Asterella has bees described on Astragalus, but this collection f i t s the above species*. Asterina Lev* As Asterella, but spores brown* A. rubicola E l l . & Bv* (Plate I, fig.24) Perithecia epiphyllous, solitary or grouped, on yellow-brown indefinite spots, depressed-hemispherical, ostiole plane, 75-150 u diameter; asci oblong, sessile, 35-54 x 12-16.5 u; spores biseriate, ovate-ellipsoid, yellowish-brown, one-septate, upper c e l l broader, 12-16.5 x 6-8 / i * On leaves of Rubus sp., Sunmierland, l e g . G.E. Wooliiams, det. I.L.Conners (0-3366, S - l l , GPDS 1933)* Asterula Sacc* As Asterella, but spores one-celled, hyaline* Two collections key to this genus; in neither case was a description found to f i t , but the scarcity of material prevents description as new species* Asterula sp* On Phleum alpinum L., Cathedral Lakes (H-2009): Perithecia black, shiny, flattened, membranaceous, of radiating mycelium, surrounded 34* at base by hyaline hyphae, ostiole umbilicate, 85-150 u diameter; asei cylindric-oblong, sessile, eight-spored, aparaphysate, 30-38 z 6-7.5 u, spores hyaline, one-celled, narrow ellipsoid,oblique i n the ascus, 7-9 z 1.5-3 jx* On Pote nt i l l a diver ei f o l i a Lehm., A t l i n D i s t r i c t , leg. W.A.Setchell (H-1998): Perithecia superficial, black* shining, flattened,-membranaceous, 90-150 jx diameter; asci sessile* oblong, aparaphysate, 36-45 z 15-18 p., eight-spored; spores one-celled, greenish-hyaline, biseriate, ovate e l l i p s o i d , granular, 12-15 z 6-7.5ji. The perithecia are similar in appearance to those of Microthyrium arcticum Oudem., but asci are much broader and spores one-celled* Microthyrium De am* Perithecia superficial* without.aerial mycelium, shield-shaped, per-forated at the centre, membranaceous, brown to black; asci cylindrical to obovate; spores oblong to fusold, one-septate, hyaline; paraphyses mostly lacking* Spores large, 15-25 ^ i long... ...*M» Juniper 1 Spores smaller, not over 12 jx long* Perithecia black and shiny, gregarious*•••• ...*....M* arcticum Perithecia brown, dul l , scattered........... *..»M* microscopicum M. arcticum Oudem* (Plate I, fig.25) Perithecia superficial, gregarious on leaves, minute* 60-120 jx diameter, of radiating mycelium, membranaceous, black and shiny, ostiole a pore in the centre; asci aparaphysate, clavate, 33-45 (-50) z 7-9 (-12) jx; spores biseriate, hyaline, one-sept ate, 9-10 (-12) z 1*5-3 (-4.5) jx* On Potentilla f l a b e l l i f o l i a Hook*, Cathedral Lakes (H-1999); Slbbaldla procumbens L*. Garibaldi, leg. W.Cottle (H-2OO8)0 35* M* Juniper! (Beam.).Sacc* (Plate I, fig.26, Plate 71, fig.28) Perithecia epiphyllous, superficial, dimidiate-lenticular, membranaceous, brown-black, ostiole minute i n raised centre, 160-300 jx diameter; asci broadly cylindrical, abruptly narrowed to a short stalk, eight-spored, (60-) 70-75 (-90) i 20-24/i; spores hyaline to greenish, bi seriate, one-septate, slightly constricted at the septum, upper e e l l broader, 15-25 i 6-10»5 n* On l i v i n g leaves of Junlperus scopulorum Sarg., Soda Greek, leg* J.Bancroft (H-1976), Fort Steele, near Cranbrook, l e g . A.K.Parker (H-1978); J* ?slbirioa Burgsd., Soda Creek, leg* J . Bancroft (H-1977). M* Tmicroscopicum Desm. Perithecia flattened, brown, 50-150 jx diameter; of radiating mycelium; asci ovate-oblong, sessile, eight-spored (13£) 2L-30 x 7-10 (-12) jx, aparaphysate; spores biseriate or irregular, elongate-ovate, hyaline, with one septum sli g h t l y nearer the lower end, 7*5-10 x 2-3.5 u* Two collections on Pteridophytes are doubtfully placed here; no other species f i t s as well, but this species i s noted only on leaves of deciduous trees* On Dryopteris sp* (H-2010) and Polystlchum munitum (Kaulf*) Presi. (H-2011), Stanley Park, Vancouver* Stlgmatea Fries Perithecia smooth, superficial, membranaceous, ostiole minute; asci oblong, subsessile, eight-spored, paraphysate; spores ovoid-ellipsoid, unequally uniseptate, yellowish-hyaline* S. Robertiani Fr* (Plate I, f i g . 27) Perithecia scattered or, grouped loosely, superficial,- smooth and shining, 65-140 p. diameter; asci oblong, sessile, broader below, 33-45 x 10-14 u; paraphyses scanty; spores 36. subbiseriate. uhiseptate, upper c e l l broader, greenish, 12-14 x 4-6 u* On l i v i n g leaves of Geranium pus ilium Burm* f*, Cult i s Lake, leg* H.H.Ross (H-l975)* HYPOGHEALES Perithecia globose, ovate, conical, cylindrical, fusoid, or flask-shaped, free or seated on or immersed in a fleshy stroma; bright-colored, white, yellow, red, brown, violet, ostiolate; wall membranaceous or fleshy; asei cyl i n d r i c a l , clavate or subovoid, four- to eight- (sixteen-) spored; paraphyses present; spores simple or compound, hyaline or colored, globose to filiform© 4* Nectriaceae Perithecia free or seated on a stroma and cespitose; stroma often obscftred at maturity by perithecia, but presence indicated by cespitose perithecia© Stroma absent, perithecia free, scattered or gregarious* Perithecia clavate, spores f i l i f o r m , hyaline**.****** ©Aorospermum i Perithecia-globose, conical or ovate, spores ovate, fusoid or e l l i p t i c a l * Spores one-celled, ovate, yellow to brown* Perithecia beaked. Melanoapora Perithecia without beak >Sro8trotheea Spores two-celled, hyaline, fusoid or e l l i p t i c a l * Peritheoia subepidermal, becoming erumpent-super-f i c i a l Nectriella 37. Perithecia superficial .Nectria Stroma present, perithecia cespitose on the stroma; spores two-celled, hyaline Creonectria Acrospermnm Tode ex Fr. Perithecia superficial, single or i n small groups, fleshy-cartilaginous to coriaceous, horny when dry; creamy-white when young, at maturity honey-yellow to brown or brownish-black; elongate-clavate to subcylindric, sessile; asci long-cylindrical; paraphyses threadlike, longer than asci; spores f i l i f o r m , nearly as long as the ascus. A . compresaum Tode. Perithecia brown to black, clavate, up to 3 mm. i n length; asci c y l i n d r i c a l , 200-400 x 4-7 ^ i , paraphysate; spores f i l i f o r m , nearly as long as the ascus, hyaline. This fungus i s retained in the Nectriaceae In Accordance with Bisby (1938: 45) and Wehmeyer (1950: 31); i t s status i s probably close to the Coryneliaceae (Brandriff, 1936)* On Draba Paysonil Macbr. var. Treleaaii (Schulz.) H i t c h c , Tenquille Lake, Pemberton, l e g . W.Taylor (H-1817)* Broatrotheca Martin & Charles (1928) Perithecia superficial, gregarious or scattered, globose-conical, beakless, glabrous, diaphanous; stroma absent; asci arising basally, evanescent, eight-spored; spores e l l i p s o i d , yellow to olivaceous. B. multiformis Martin & Charles. Perithecia gregarious or scattered, at f i r s t Capucine yellow changing to mahogany red with age; asci clavate, 20-25 x 12-16 jx, aparaphysate, short stalked; spores irregularly biseriate, 38* e l l i p t i c a l , flattened!.on one side, dark cit r i n e , olive-yellow in mass© Only the imperfect stage (Cladoaporium album Dowson) noted; on Lathyrus sp* (CPDS 1952)o Cre one ct r i a Seave r (Nectria Fries in part) Perithecia globose or subglobose, on or with bases immersed in a fleshy stroma, ostiole often depressed with age; asci cylindrical or clavate eight-spored; spores uni- or biseriate or crowded, e l l i p t i c a l to fusoid, straight or curved, 1-septate, hyaline; paraphyses present or lacking* Perithecia dull brick-red becoming brown or black with age, stroma tubercular, prominent•••.•••••••••*•••.........o..............o.0* purpurea Perithecia scarlet or blood-red, becoming reddish-purple with age* Spores e l l i p t i c a l with ends obtuse* Peritheeia collapsing with age, becoming truncate.>**C* pithoides Perithecia entire, ostiole very prominent............C. mammoidea Spores fusoid with ends acute or subacute* Spores narrow-fusoid, on deciduous trees.••...........»C. coccinea Spores broad-fusoid, on coniferous wood............0. Cucurbitula C. coccinea (Pers*) Seaver (Plate I, fig.28) Stroma yellowish, springing from the crevices of bark i n irregular patches; perithecia cespitose i n dense irregular clusters, or occasionally scattered, ovate with a prominent ostiole, bright red, smooth or minutely roughened, about 300 u diameter; asci cylindrical or clavate, eight-spored, 80-90 x 8-10 j i ; spores unlseriate fusoid, 11-16 x 3-6.8 jxo On bark of Acer macrophyllum Pursho, Cowichan Lake leg. W.G.Ziller (0-26108, H-1825, 7-3415), Bast Sooke, le g . W.G.Ziller 39, (0-26098, H-1824, 7-3063); A. clreinatum Purah., Haney, leg. W.G.Ziller (0-23348, 7-4503)• C. Cueurbltula (Sacc.) Seaver (Nectria Cucurbltula Sacc.) (Plate I, fig.29) Peritheeia i n erumpent and irregular clusters, cespitose, bright red, later becoming reddish-purple, ovate with a prominent, obtuse ostiole, entire or rarely collapsing; asci cylindrical or clavate, 75-120 z 6-8 (-13) u; spores at f i r s t crowded and p a r t i a l l y biseriate, f i n a l l y ualseriate, oblique, broad-fusoid, one-septate, not constricted, hyaline, 14-22.5 z 4.5-7p.* On bark of Abies grand!s Lindl., Cowichan Lake, leg . I.Mounce and J*.Curtis, det. I.L.Conners (0-1912, GPDS 1933)• C. mammoidea (Phil. & Plow.) Seaver (Nectria mammoidea Phil.& Plow.) Perithecia cespitose or scattered, surrounding a brownish stroma, large, about 500/1 diameter, ovate, ostiole large, obtuse, bright red with ostiole often darker, shining, entire; asci cylindrical or s l i g h t l y clavate, 100 z 7-8 u, spores uniseriate or p a r t i a l l y biseriate above, oblique, subfdsoid, one-septate, usually slightly unequal-sided, 18-20 z 6-7/u Not seen, mentioned i n North American Pyrenomycetes ( E l l i s & Everhart, 1892; 106), on bark of maple, B.C., Macoun. C. pij»holdes ( E l l . - c Ev.) Seaver (Neetria pithoides E3.1.& Ev.) (Plate I, flg.30, Plate 71, fig.29) Stroma erumpent, yellowish; perithecia seated on the stroma in dense clusters, bright red, collapsing to become truncate, resembling the head of a barrel with the ostiole appearing as a lig h t trans-lucent dot in the centre, 200-250 u diameter; asci c y l i n d r i c a l , 70-80 z 5 jx; spores e l l i p t i c a l , one-septate, with an oil-drop in each c e l l , hyaline, 6-10 z 3-4 jx* On bark of dead alder, Agassiz, leg. J.Macoun (OM-122, CKJTXPB), 40. described by E l l i s and Everhart (1890; 247); Elk Lake, Vancouver Island, leg. J.Macoun (CM unnumbered, April 18, 1915), confirmed by J.Dearness. C. purpurea (L.) Seaver (Nectria cinnabarina Fries) (Plate I, fig.31) Stroma erumpent, tubercular, pinkish becoming darker with, age; perithecia nearly globose, ostiole rather prominent, sli g h t l y collapsing, at f i r s t bright cinnabar-red, becoming darker with age to brown and occasionally black; roughened with coarse granules, 375-400 jx diameter; asci clavate, 50-105 x 7-17- (-15) jx; spores mostly biseriate* e l l i p t i c a l , elongated,. one-septate, hyaline, sl i g h t l y curved, 12-20 x 4.5-7*5 ^ n; paraphyses d e l i -cate* On bark of various trees and shrubs: Acer macrophyllum Pursh*, U.B.C* (H-1828, U-370), Victoria, leg* P.J.Salisbury (U-55); Alnns oregona Nutt*, U.B.C., leg* H.Pepin (H-l815); Chaenomeles lagenaria Koida*, Japanese quince, North Vancouver, leg* S.Brown-John (Hfl822); Choiaya  ternata HBK, Victoria (CPDS 1934); Ficus sp., U.B.C. (H-1827); Pyrus Malus L«, Salmon Arm, leg* F.Dickson (H-216), South Canoe, leg* G.E.Woolliams (S-86); Rubus sp., raspberry, Saanichton, l e g . J.Macoun (OM unnumbered, Aug.l, 1916); Spiraea Menziesli Hook., Sidney, l e g . J.Macoun (OM-372 , 373)a Creoneetria sp. (Plate I, fig.32) On bark of trees, Hastings, April 12, 1889, leg. J.Macoun (OM-25); on the packet i s written Nectria Macouniana E.& E. n.sp. but according to J.Dearness the name was never published* The fungus most closely resembles Creoneetria memmoidea (Phil. & Plow.) Seaver. Perithecia grouped on a yellow stroma, bright red, granular, 256-446^1 diameter; collapsing pezizoid with age, ostiole prominent, smooth, darker red; asci cylindrical, 78-105 x 9-12 jx; spores uniseriate, e l l i p t i c a l , uniseptate and slig h t l y constricted at the septum, flattened on one side, 13-16.5 x 6-7.5 ya* 41. Melanospora Corda Perithecia superficial, without stroma, globose-pyriform, with a long neck, tipped with hairs and perithecia often hairy; asci broad-elavate B four- to eight-spored, evanescent; spores simple, brown* Spores e l l i p t i c a l , flattened on one side, often curved*.......>M* papillata Spores broad-elliptical, not flattened . »..**_» Townel M» papillate Hotson (Plate I, f i g . 33) Peri theeia brown, fleshy, globose, papillate, 350-450 u diameter; asei clavate, evanescent, 60-75 x 24-36 n; spores hyaline at f i r s t , becoming deep brown except for a hyaline t i p or apieulum at each end, one-celled, e l l i p s o i d , flattened and sli g h t l y curved on one side, 21-33 x 10-16*5/1* Isolated from seeds of Phaseolus coeeineus L., scarlet runner bean, Vancouver (0-14909); Vicla faba L«, broad bean, New Westminster (0-18353); both isolated and determined by J.W.Groves* M* Townel Griffi t h s (Plate I, fig.34, Plate VI, flg.30) Perithecia straw-colored, centre darkened by spore mass, globose, 200-330 p diameter; neck elongate, 145 x 55 p, bristled at the apex; asci early evanescent, ovate, eight-spored; spores at f i r s t hyaline, becoming dark brown, broad-ellipsoid to ovate, apiculate at each end, with a large guttie, 19*5-24 x 15-18*25 u* On pressed specimens of Amaranthus sp*, Windermere, leg* G.E.Woolliams (H-1826)» Nectria Fries ———————— ; Perithecia superficial, free, scattered to crowded, globose, ovate-conical, ostiole papill1form, obtuse, or obscure; color whitish to reddish-purple; asci cylindrical or clavate, eight-spored; spores hyaline, one-42 septate, e l l i p s o i d , fusoid or fusiform* Perithecia not collapsing, ostiole papillate* M« galllgena Perithecia collapsing at maturity, ostiole obtuse* Spores narrow-fusoid; on wood * ...N* sanguines Spores broad-fusoid; on sphaeriaceous fungi**.****....**M> episphaeria N. eplsphaerla (Soda) Fr» (Plate I, fig*55) Perithecia gregarious or scattered, superficial, subovoid, b i l a t e r a l l y collapsing when dry, smooth, blood-red, perithecial wall composed of rather coarse c e l l s , 150-250 diameter; asci cylindrical* 60-75 x 5-7 (-9) u; spores obliquely uniseriate, broad-fusoid, 9-12 x 4-6 ^ i , one-septate, hyaline* On Diaporthe eolumbiensls Hl*& Ev.,. Hastings, leg* J.Macoun (QM-52); Dlatrype Macounii SL1.& Ev*, Royal Oak* Vancouver Island, leg* J.Macoun (OM unnumbered, Sept.29, 1914& April 8, 1915); Eutypella stellulata (Br.) Sacc, U.B.C. (H-1829); Hypoxylon sp*, and Melanconis thelebola..(.Br*) Sacc, Cowichan Lake, leg* W.G.Ziller (0-26101:, Hfl820, V-3466, V-3557). N. galllgena Bres* (Plate I, fig.36) Perithecia dull red when dry, scattered, globose-conical, 500 x 370 jx; asci clavate, stalked, 66-96 x 7.5-8 p; spores hyaline, one-septate, e l l i p s o i d , uniseriate or p a r t i a l l y biseriate, 15-18 x 4-5 iio On apple and pear, Vancouver and Alberni (H-399, H-26, CPDS 1926, 1931, 1935, 1939, 1946)* N. sanguines Br. (Plate I, fig.37) Perithecia gregarious or scattered, superficial, ovoid, mostly entire, often collapsing when prematurely dried, smooth, blood-red, shining, about 200-275 x 250-300 j i ; ostiole obtuse but prominent; asci cylindrical, 60-75 x 6-7 p; spores obliquely arranged i n the 43 G ascus, uniseriate below, p a r t i a l l y biseriate above, narrow fusoid or sub-e l l i p t i c a l , one-septate, sli g h t l y constricted at the septum* granular, 10-12 (-15) z 4-5 (-6) u* On old birch, Hastings, lege J.Macoun (CM-34)o Nectriella Fckl* Perithecia subepidermal, becoming erumpent, globose or subglobose; asci eight-spored, cylindrical or clavate, paraphysate; spores hyaline, one-septate* Nectriella sp. (Plate I, fig.38) The following three collections are somewhat Immature, therefore cannot be placed in a species definitely* On Arnica l a t i f o l i a Bongo, Cathedral Lakes (H-l972): Perithecia salmon pink, 210-240 diameter; asci clavate, paraphysate, 45-50 z 9-14 jx, f i l l e d with granular material, immature* 0 1 1 Lupinus lat i f o l i U B Agh* var* subalpinus (Piper and Robins*) CP.Sou, Cathedral Lakes (H-2051): Perithecia pink to brownish, 200-270 p. diameter; asci 54-60 z 9-12 u, clavate, paraphysate, f i l l e d with granular material, immature* On Phloz diffusa Benth*, Garibaldi, leg. W.Cottle (H-1816): Perithecia pink, 180 u diameter or larger; asci clavate, paraphysate* 54-66 z 13-15 p.; spores one-septate when mature, 13-18 z 6-9 u, obliquely biseriate, e l l i p s o i d , ends rounds d e 5* Hypoereaceae Stromata conspicuous, on the substratum or arising from a sclerotium, effused without definite margin, patellate, substipitate or erect; perithecia p a r t i a l l y to entirely immersed in the stroma; asci cylindrical or clavate, eight- to sizteen-spored; spores subglobose to f i l i f o r m , simple or compound, 44* hyaline or colored* Stroma seated directly on the substratum* usually pate Hate or effused* rarely clavate and erect* Spores fusiform j usually on fleshy fungi ...............Hypomyces Spores f i l i f o r m ; on stems of grasses Epjchloe (Typhodium) Stroma springing from a sclerotica, usually erect and clavate, rarely depressed* Sclerotia formed in the bodies of insects or fr u i t i n g organs of fungi*. •• •••Cordycegs Sclerotia formed i n the ovaries of plants**.....Claviceps (Spermoedia) Claviceps Tul. (Sjermoedia Fries) Sclerotia formed i n the inflorescence of various grasses and sedges; stromata developed from sclerotium, consisting of s t e r i l e stem and f e r t i l e head, head subglobose, grayish, reddish-brown, or yellowish; perithecia flask-shaped, immersed i n the stroma with necks protruding; asci c y l i n d r i c a l , eight-spored; spores f i l i f o r m , simple, hyaline* Sclerotia formed i n ovaries of Carex spp*, not over 15 mm. longe..C* Grohii Sclerotia formed i n ovaries of wild and cultivated grasses, 1-2 cm. long. *.... .Co purpurea C. Grohii Groves (Plate I, fig.39) Sclerotia blackish-violet, usually curved, 5-15 x 1-3 mm.; stalk reddish brown, slender, twisted, .25-.5 x 4-15 mm*, head globose, pinkish, ostioles darker red, .8-2.0 mm. diameter; p e r i -thecia 150-300 x 100-150 u; asci c y l i n d r i c a l , short stalked, (100-) 125-160 (-175) x 5-6 jx\ spores f i l i f o r m , (75-) 90-125 x 1-0..5ya* In ovaries of 45* Care- ateHulata Good., Milner, leg. H.Groh (0-12072, TYPE),(Groves 1943: 608); Carex a f f . f e s t i v e l l a Mackenzie, Aldergrove, leg* H.Groh, det. J.W.Groves (0-12073), C, purpurea Tul, (Spei-oedla Claras (DC,) Fr,) (Plate I, fig.40) Sclerotia hard, purplish-black, 1-2 cm, long; stromata 20-30 from a single sclerotium; stem slender, flezuous or s p i r a l l y twisted, dark-brown; head subglobose, 1-2 mm, diem,, reddish-brown; perithecia entirely immersed or sl i g h t l y pro-truding, flask-shaped, 150-175 x 200-250 jx; asci very long, cylindrical, 100-125 (-170) x 4-4,5 j i ; spores f i l i f o r m . This species has been collected on many genera of grasses; i t i s a complex of biological races requiring cross-inoculation studies* In ovaries of Agropyron eristatum (L.) Gaertn,, Agassiz, leg, W.Jones (H-269); Arena sat Ira L,, (CPDS 1930); Bromus inermls Leyss, (CPDS 1930); Calamagrostis canadensis (Michx.) Beauv, (CPDS 1933); —lymus arenarins L., Kami oops, leg* V.Krajina (H-1530); E. canadensis L«, Prairie Valley, Summerland, leg, G.E.Woolliams (S-1S); E, condensatus Pre s i * , Tranquille, leg* V.C.Br ink (H-1551); B* glaueus Buckl,, N.Saanich, leg* W.Jones (H-682); E» Macounii Vaaey, Nicola Valley, l e g . V.C.Brink (H-15591; Elymua sp*, U.B.C, leg, D.Elvidge (H-978); Festuea elatlor L., Fraser Valley* l e g , W.Jones (H-270); Hordeum vulgare L*, Saanich, leg. W.Jones (H-258, CPDS 1925, 1934, 1936); Lolium perenne L., Ladner, leg* W.Jones (H-259, CPDS1934, 1945); Phleum pretense L., (CPDS 1930); Secale cere ale L*, Summerland, leg* G.E.Woolliams (S-231); Trltieum aestivum L., (CPDS 1930)* Cordyeeps (Fr.) Link Stromata springing from the sclerotium within bodies of insects or i n other fungi, simple or branched, clavate; perithecia more or less Immersed; 46* asci cylindrical, eight-spored; spores f i l i f o r m , many-septate and breaking into segments i n the ascus or simple and entire* C. myrmecQphila Pes. On ants, Vancouver, leg* J.Davidson, not seen (Mains 1947)* Epichloe. (Fr*) Tul* (Typhodlum Link) Stroma effused, subfLeshy, pale becoming bright orange, forming rings or sheaths about the stems of grasses; perithecia Immersed or with ostioles protruding; asci c y l i n d r i c a l , eight-spored} spores f i l i f o r m , many-septate* 5* typhina (Pars.) Tul* (Typhodlum typhinum (Pers*) Seaver) Stroma effused, subfieshy, at f i r s t pale, becoming bright orange, perithecia thickly scat-tered, p a r t i a l l y to entirely immersed, soft, membranaceous, orange, ostiole prominent; asci cy l i n d r i c a l , very long, eight-spored; spores nearly as long as the ascus, in a close fascicle, about 2ya diameter, many-septate© On Holcus lanatus L*, U.B.C*, leg* H.Toms (H-1823)* Mature stromata have never been collected; although the Immature stage has been noted and watched through the year, perithecia were not formed© Bypomyces (Fr*) Tul* Stroma of effused, cottony subiculum, parasitic otL fleshy fungi; perithecia numerous, usually thickly scattered and immersed i n the subiculum; asci cylindrical, eight-spored; spores fusoid or fusiform, usually with an apiculus at each end, one-septate, hyaline, smooth or rough* Stroma entirely covering and transforming the hymenium of Lactariae; perithecia immersed...................*........ ».H* Lactifluorum Stroma forming interrupted patches on fungi of various kinds; perithecia sub superficial* .*• • • • • • • • • *»H* aurantlus 47, H* aurantiua (Pers.) Tul. (Plate I , fig . 4 1 , Plate 71, fig .31) Subiculum efrosed, at f i r s t whitish, becoming orange or rust-colored; perithecia thickly gregarious or crowded, orange, subeonieal, with the ostioles strongly protruding; asci cylindrical, spores slightly overlapping, 126-160 z 4-7 j i ; spores fusiform, usually a l i t t l e curved, one-septate, with a short apiculus at each end, becoming strongly verrucosa at maturity, 22-27 x 4-6ya* On Pomes pinicola (ir») Cke* on Tsuga heterophylla (Raf») Sarg., Hope, leg* W.G.Ziller (H-1818, 7*6014); Polyporus resinosus Fr«, on Tsuga heterophylla (Raf.) Sarg*, Wigwam, Revelstoke, l e g . W.G.Ziller, (H-l819, 7-6556); Polyporus sp., on Tsuga heterophylla (Raf.) Sarg*, Martha Creek, Revelstoke, leg* W.G.Ziller (H-1821, 7-6568, 7-6581).* Ho Lactifluorum (Schw.) Tul* (Plate I , fig.42) Subiculum thin, effused, covering the hymenium and stem of the host and entirely obliterating the g i l l s , bright orange, changing to bright purple as the host decays; p e r i -thecia thickly scattered, immersed or with necks sli g h t l y protruding, a l i t t l e darker than the subiculum; asci very long, cylindrical; spores uniseriate, ends overlapping, fusiform with an apiculus at each end, slightly curved or unequal-sided, one-septate, hyaline, strongly roughened at maturity, 35-45 x 6-8 jxt oozing from the perithecia and forming a white powder over the surface of the stroma* On Lactaria sp., Savory Island, l e g . M.Herchmel (H-975), Hatzig, l e g . W.Jones (0-3994). DQTHIBSALES Stroma always present, brown or black throughout or white within; perithecia lacking, asci in locules i n the stroma which lack a definite 4 8 . wall; stroma elongated, round, or several stromata coalescing to form an irregular mass; true paraphyses lacking, rather pseudoparaphyses f i l l i n g the locule with asci growing up into them; asci clavate or cylindrical, stalked; spores variously shaped and colored* 6* Dothideaceae Characters those of the order* Spores unicellular ••••••••••••*•••...•» ,,.Phyllachora Spores two- to several-celled© Spores uniseptate, hyaline to yellowish* Stromata large and prominent, erumpent from branches of t r e e s o . , , , , , , , . B a , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , . , , , , o « D i b o t r y o n Stromata smaller and thin, on leaves and stems of herbaceous plants* On leases,of Trlfolium spp*; aparaphysate, spores with yellowish t i n t * * ...........Cymadothea On Monocotyledons; paraphysate, spore s hyaline * *Endodothella Spores muriform, brown....... * .Cucurbidothis Cucurbidothis Petrak Stromata crust-like, variously shaped; perithecia seated i n the stroma! globose, broad papillate, black; asci cy l i n d r i c a l , stalked, eight-spored; spores uniseriate, oblong, muriform, yellow-brown* C. plthyophila (gr») Petrak (Plate II, f i g . l ) Perithecia carbonaceous, on a black stroma; asci cylindrical, 120-135 z 9-11 u; spores olive-brown, 49* 3-5-septate with 1-2 vertical septa, 17.2-20.6 x 6-8 p.P On Pinus monticola Dougl., NaliAsp,, leg. R.W.Davidson (H-1835, V-6749); Shawnigan Lake, lego R.E.Foster, et e l . , (H-1833, 7-5750, 0-26771); Victoria Watershed, leg . A.K.Parker (H-1834, V-6728). Cymadothea Wolf Stroma innate, erumpent, dothideoid, brown; perithecia imbedded in the stroma, irregularly dehiscent, spherical to ampulliform; asci clavate, aparaphysate, eight-spored;. spores two-celled, subhyaline to honey-yellow. C. T r l f o l i i (Pers.l Wolf (Wolf 1935: 71) Perfect stage not collected; Polythrinolum T r i f o l i l stage causing sooty blotch of clover» On Trifolium  hybridum L., To pratense L., and T. repens L., Vancouver Island and Fraser Valley, not seen (H-1586, H-370i H-354, H-218, H-353, B>371; GPDS 1930, 1935, 1936, 1937, 1939, 1940.). Dibotryon Theiss e& Syd. (Plowrlghtia Sacc.) Stroma convex-pulvlnate, confluent, black coriaceous; asci elongated, eight-spored; spores ovoid to oblong, two-celled, hyaline to l i g h t green. D. morbosum (Schw.) Thelss. & Syd. (Plowrlghtia morboaa (Schw.) Sacc») (Plate II, fig.2, Plate 71, fig.32) Perithecia p a r t i a l l y erumpent from the black stroma; asci clavate, 75-100 x 13-15p\\ spores ovate-oblong, unlseptate, lower c e l l much smaller than upper, 15-18 (-24) x 7.5/1. On Prunus armeniaca L. var. An da, Agassiz, leg. R.E.Fitzpatrick (0-19794); Prunus demlssa (Nutt.) Walp., Australian, Cariboo, leg. W.Jones (H-667), Vernon (H-1837), Keremeos leg. R.P.Murray (S-280* GPDS 1939); Prunus sp., Cowichan Bay (H-1534), Spence's Bridge (U-426), Clint to (17-357); on wild and cultivated plum and cherry (GPDS 1926, 1933, 1937, 1943, 1944, 1945, 1946, 1947). (Stace-Smith 1950). 50© Bndoddthella Theiss. & Syd. Parasitic* stromata simple or compound, ostiole present; asci c y l i n -drical to broadly e l l i p s o i d , paraphysate; spores hyaline.two-celled© E, Tracyi (EH.& Ev.) Theiss* & Syd* Immature* no asci present* On Distichlis s t r i c t a (Torr*) Rydb,, Oliver, det. I.L.Conners (10-15234). Phyllachora Nitsch. Parasitic, simple or compound, perithecia with clypeus conspicuous in one or both leaf surfaces; ostiole present; paraphyses f i l i f o r m ; asci cylindrical to broadly e l l i p s o i d ; spores one-celled, hyaline© (Orton, 1944) Spores medium sized, 9-13 u long; clypei e l l i p t i c a l to linear i n outline..,. ...P. gram in i s Spores large, 12-20 u long; clypei circular to oval i n outline. • • «...P© ailvatioa P. graminis (Pars.) Fckl© (Plate II, fig.3) Stromata numerous; asci c y l i n -d r i c a l , 90-95 s 9 u; spores unicellular, hyaline, 9-13 x 4.5-7.5 jio On Dactylis glomerata L», Harrison Lake (H-1836); Elymus condensatus Pres., U.B.C. (H-1832); TPoa sp., Lulu Island, leg. B.Lawspn (H-1831), Kamloops, leg. J.Macoun (0M-154). P. 3ilvatica Sacc. & Speg. (Plate II, fig.4) Stromata oval, with few perithecia; asci broadly cylindrical, 90-105 x 12-15 n; spores 12-16.5 x 7.5-9 p.* On Pestuca rubra L., Sidney, leg* W.Jones (H-760)© Dothideaeeae indet* (Plate I I , fig.5) According to Theissen & Sydow's classification (Saccardo 1926: 535, 551) this specimen f a l l s Into the 51. genus Phrogmodothella« £iexcept that paraphyses are lacking 4n that genus; i t does not f i t either of the two species given there. Stromata elongate, black; perithecial loeules 120-200 1^ diameter, walls lig h t brown; paraphyses numerous; asci cyl i n d r i c a l , 60-78 x 7.5-9 jx; spores 1-7 in an ascus, uniseriate, three-septate, hyaline or greenish, with a large/guttule in each c e l l , 15-18 x 7-8 i i . On decorticated wood, Cathedral Lakes (H-1838). 3PHAERIALES Perithecia (generally) with distinct, rounded, sometimes elongated ostioles, membranaceous to carbonaceous, not fleshy-fragile, brown to black; stroma, i f present, dark outside, mostly white within, perithecial walls distinct; asci variously shaped, stalked or sessile, with or without paraphyses; spores of various shapes and colors. 7. Chaetomiaceae Perithecia superficial, free or seated on superficial mycelium, colored or black; ostiole rounded, plane, sometimes lacking, clothed with characteristically straight, branched,or spi r a l l y wound hairs; asci clavate or cyli n d r i c a l , stalked, eight-spored, evanescent; spores oner celled, mostly broad-«llipsoid and short apiculate (lemon-shaped), dark colored, smooth; paraphyses none© Chaetomlum Kunze Characters those of the family. Hairs l i g h t yellow-green, terminal ones of straight and spiral mixed •.••••••••.••...•••••*..•••. C. eoehliodes Hairs brown, terminal ones in a tight spiralis C. spirals 52* C. coehllodes P a l l i s e r (Chlvers 1915: 204) (Plate II, fig.6) B r i l l i a n t yellow-green; lateral hairs numerous, roughened; terminal hairs straight and tapering or loosely spirally twisted; asci club-shaped, eight-spored, 88 x 11 n, p.sp. 32 jx% spores olive-brown, lemon-shaped, apiculate at both ends, 8-10 x 6-8 jx, compressed, with edge 4.5-6 /a* On cardboard and paper towelling in moist chamber, collected Duncan (H-1904). C. ?splrale Zopf (Plate II, fig.?, Plate VI, fig.33) Perithecia ovate, dark brown to black, 150-300 p diameter, seated on dark olive-yellow to brown rhizoids; l a t e r a l hairs nearly straight, dark olive-brown; terminal hairs rich olive-brown, roughened, spirally coiled; asci clavate, pisp. 34-43 p. long, spores lemon-shaped, ovate or spherical, olive-brown, 6-12 x 5*5-9yu, edgewise 5.5-7 jx broad* What comes most nearly to this species was found on decaying plant remains of Oryria digyna (L.) Camptdera, Cathedral Lakes (H-1905)* 8* Sordariaceae Perithecia either superficial, free or more or less deeply sunken in the substrate, with or without a stroma, membranaceous or f r a g i l e , dark colored; ostiole distinct, round, without a tuft of hair; asci c y l i n d r i c a l , stalked, 8- to many-spored; spores one- to several-celled, often with mem-branaceous sheath and appendages, brown; paraphyses presents Spores one-celled, with or without hyaline sheath or appendages* Perithecia beneath a black crusty stroma*......a..........*.»Hypocopra Perithecia lacking stroma, Immersed or superficial* Perithecia with stout, spiny neck; spores oblong-elliptic, pale brown*. ••••••••••••••• Acanthorhynehus 53< Perithecia globose or conical, without spines; spores dark brown, el l i p s o i d * • . • . • • • • • • • • • • • • • . • • • • • * • • •..*•.Sordaria Spores at f i r s t long c y l i n d r i c a l , hyaline, guttulate, appendaged, at maturity with upper part swollen, dark brown, lower part as hyaline primary a p p e n d a g e s . . . . • • • • • • .Bombardia Acanthorhynchus Sheer Perithecia submembranaceous, scattered, buried, beaked; beak spiny, ostiolate; asci eight-spored,. paraphysate; spores one-celled, brownish-yellow* Ao vaecinii Shear (1907) (Plate II, fig.8, Plate 71, fig.34) Perithecia amphigenous, scattered, subglobose, to flask-shaped, submembranaceous, 120-200 fx diameter; neck stout, ostiolate, 1/3 to 1/2 the length of the perithecium, with black, nonseptate spines, 50-70 z 8-9 jx at base; asci subellipsoid, subsessile, eight-spored, 120-155 z 24-44 n; paraphyses septate, exceeding the asci; spores oblong-elliptic, one-celled, ,pale brownish-yellow, 24-32 z 12-18 jx* On leaves of Taccinium Oxycoccos L*, Lulu Island, leg* A.Szczawinaki (H-l926)« Bombardia Fries Perithecia superficial, clustered, coriaceous; asci perforate at apex, with refractive globule i n the upper end; spores when young long c y l i n d r i c a l , hyaline, bent, guttulate, with tapered appendage at each end; at maturity, upper end of spore swollen, dark brown, cut off by a septum, lower part re-maining as hyaline primary appendage, secondary appendages frequently brois&n of f e 54.. Bo amblgua (Sacc.) Wint* var. carbonari a Ream. (Plate II, fig.9) P e r i -thecia grouped, coriaceous, covered with short brown hairs, with longer hyphae at base, oblong, 800 z 500 fx; asci cylindrical, long stalked, p.sp. 160-210 x 15-19 p., eight-spored; paraphyses long, branched; spores at f i r s t c ylindrical, bent, with many guttules, hyaline, appendage at both ends, at maturity spore brown, el l i p s o i d , 18-21 z 9-10.5 u, primary appendage cylindrical, curved, 38-44 z 5 n, secondary appendages long and slender* On wood covered with sand, U.B.C. (H-1923)* Eypocopra Fries Perithecia situated below a black crusty stroma with projecting, usually pap i l l i form beaks, completely surrounded by a dense feltwork of white mycelium by which they are firmly attached to the substratum; asci containing an apical structure which stains, eight-spored, cylindrical or clavate; paraphyses f i l i f o r m to tubular; spores e l l i p s o i d , dark colored, surrounded by a prominent gelatinous envelope and containing a l a t e r a l germ slit© H* glgaspora (211 • & 2v*) Griffiths (Coprolepa gigaspora _L1*& Ev 0) Perithecia very large, scattered or aggregated in small clusters, sunken, with the short papilliform black smooth beak erumpent through the smooth black convex shield-shaped stroma, about .75 z 1 mm., membranaceous to coriaceous, colorless to brown and densely covered with a fine white mycelium which becomes gradually differentiated above into a true stroma; asci eight-spored, cyli n d r i c a l , broadly rounded above and abruptly contracted below into a short triangular base, §5-52 z 375-480 p.; apical structure very prominent and staining bright blue with iodine; paraphyses tubular to f i l l f o r m , tapering upward, septate, coarsely guttulate, longer than the asci; 55c spore8 obliquely uniseriate, e l l i p s o i d to oval and broadly rounded at the ends, 24-28 z 52-61 ranging from hyaline when young through yellow to dark brown end opaque* tipped below with a short blunt hyaline apiculum; germ s l i t l a t e r a l , rather indistinct, extending nearly the entire length of the spore, surrounded by a hyaline gelatinous zone* On cow dung, Rocky Mountains, British Columbia, June, 1897, Macoun, No*684* ( E l l i s and Bverhart 1898: 501; Griff i t h s 1901: 93)* Sordaria Ces. & de Not* Perithecia scattered or aggregated, superficial or sunken, membranaceous or coriaceous, dark and opaque; asci apically perforated; spores one-celled, usually dark brown and surrounded by a gelatinous hyaline covering* Asci eight-spored; perithecia bare or covered with brown flezuous hyphae* Spores without apiculum or appendages; surrounded by a gelatinous sheath * ••• . • •.. . *S* flmicola Spores with minute appendage or second c e l l at base, lacking gelatinous s h e a t h * * * •• . . . . . . . . . . . . . . . . o . • . . . • . • * . . . . * . S o hypocoproides Asci 128-spored; perithecia covered with straight, septate brown hairs..... . . . o o *S» setosa S. flmicola (Rob*) Ces. & de Not. (Plate II, fig.lO) Perithecia bare, neck conical; asci eight-spored, cy l i n d r i c a l , 140-160 z 16-19/1, aparaphysate; spores obliquely uniseriate, 16-23 x 11-13 j i , surrounded by hyaline gelat-inous sheath, germ pore circular, basal* Isolated from seeds of Cucurbita  maxima Duchy, squash,, by J.W.Groves, Grand Forks (0-14958); from seeds of Daucus carota L», by J.W.Groves, Okanagan Mission (0-14882); on horse dung in moist chamber, U.B.C. (H-1924). 56o S» hypocoproides Speg* (Plate II, fig.H) Perithecia scattered or in small clusters, nearly superficial, pyriform, 450-700 x 320-370 yi, nearly bare or with brown flexuous hyphae to the base of the papillate neck, coriaceous, dark brown to black; asci eight-spored, cyli n d r i c a l , 230-260 x 20-25 uf stipe 50 u long; paraphyses f i l i f o r m , septate; spores obliquely uniseriate, el l i p s o i d , 25-36 x 13-20 u, broadly rounded above, slightly truncate below, with a papillifoxm hyaline basal c e l l , 5-6 x 6-9 u, without any hyaline, gelatinous sheath or appendages* Isolated from seeds of Raphanus sativus L., det* R.F.Cain, Grand Forks (0-13539). S» setosa Winter (Plats I I , fig.l2) Perithecia superficial, pyriform, 600-800 x 400-500 u, membranaceous, greenish-brown, neck papillate, 200-250 u long; covered with straight, septate, brown, hyaline-tipped hairs, 100-150 x 3-5 u; asci 128-spored, fusiform-clavate, 300-360 x 65-85 u, stalk short; paraphyses longer than asci; spores i n several series, e l l i p -soid, 19-24 x 11-26 u, broadly rounded at the ends, hyaline to dark brown; primary appendage 11 x 3 jx% s l i g h t l y clavate, long slender secondary append-ages at each end; germ pore apical, circular* Isolated from seed of Beta  vulgaris L«, mangel, det* R.F.Cain (0-15185)* 9* Trichosphaeriaceae Perithecia superficial, mostly coriaceous to carbonaceous, clothed with bri s t l e s or hairs, often surrounded by filamentous hyphae bearing conidia or seated on a subiculum; stroma lacking; asci cylindrical or clavate, eight-spored; paraphyses usually present; spores one to several-celled, hyaline or dark colored* s. • ' 57. Spores one-celled, hyaline........ .Trlchosphaerla Spores more than one-celled* Spores two-celled, hyaline to greenish-brown* Perithecia seated on black, septate mycelium which covers the entire lower surface of the leaf Apiosporina Perithecia superficial on leaf, thickly covered with spines.•••*. o , Coleroa Spores (two-) mostly several-celled, pale to dark brown* I Perithecia coriacebus to subcarbonaceous; paraphysate.;«•••.....* -... .Herpotrichla Perithecia membranaceous to subcoriaceousj aparaphysate'*......... Herpotrichlella Apiosporina Hohnel Perithecia black, globose, crowded on a thick black subiculum covering lower leaf surface; asci eight-spored, paraphysate; spores hyaline- to greenish, two-celled* A* C o l l l n s i l (Schw.) Hohn. (Plate II, fig*13) Mycelium brown-black, septate, crustaceous, covering the entire lower leaf surface; perithecia black, globose,- crowded, 150-160 ji diam*; asci cylindrical-clavate, eight-spored, 45-60 (-68) x 10-12 u; spores hyaline to greenish, unequally two-celled, ovoid, 12-15 x 4-7 i i . On leaves of Aaelanchler a l n i f o l l a Nutt., Wire Cache, leg. D.C.Buckland (U-606, U-659); A. f l o r i d a L indl., Port St. James, leg. G.E.Woolliams (0-7822), Macalister, l e g . J.M*Macalister (H-671), N.Saanich, leg. W.Jones (H-358, Prince George, l e g . W.S.Ziller (0-25180, V-5969), Amelanchier sp., Cache Creek, le g . M.J.Short (V-4846), Pemberton, leg. N.S* Wright (H-1930), ftuesnel, l e g . N.S.Wright (H-1513), Vernon, leg. V.Krajina (H-1528). 58. Coleroa (Fr.) Bab. Perithecia superficial, membranaceous, spiny; asci not thickened at apex, oblong, mostly carved, peraphysate; spores two-celled, greenish to yellow-brown. Asci 65-75 (-120) x 15-21 / i j spores 15-21 x 6-7.5 p..............C. Oxyriae Asci 40-54 x 9-12 n; spores 9-13 x 4-6 jx C.Chaetomium 0. Chaetcmium (Kunze) Rab. (Plate II, fig.14) Perithecia superficial, i n small clusters, globose, membranaceous, covered with s t i f f bristles; asci oblong, sessile, eight-spored, 40-54 x 9-12 u; paraphyses indistinct; spores biseriate, oblong, two-celled, lower c e l l smaller, greenish brown, 9-13 x 4-6 u. On leaves of Rubus parviflorus Kutt., U.B.C. (H-1922). C. Oxyriae Rostr. (Plate II, fig.15, Plate 71, fig.35) Perithecia globose, superficial, 200 jx diameter, coriaceous-membranaceous, covered with dark: sharp-pointed bristles; asci obclavate, with a short foot, 66-75 (-120) x 15-21 p.; paraphyses branched; spores greenish-grey, two-celled, lower c e l l smaller, 15-21 x 6-7.5 p» On dead leaves of Oxyria digyaia (L.) Camptderis, Cathedral Lakes (H-1905). Herpotrichia Fckl. Perithecia superficial, spherical or depressed, coriaceous to eubcar-bonaceous, hairy or glabrous; asci clavate, peraphysate; spores fusiform or oblong, one- to several-septate, brown. H. nigra Hartlg (Plate II, fig.16) Perithecia spherical, 250-450 diameter, semi-immersed i n a dark bsown, f e l t - l i k e subiculum; asci clavate, (105-) 128-155 (-180) x (10-) 14-18 jx; paraphyses filiform; spores irregularly biseriate, 59. ellipsoid-oblong, at f i r s t one- to three-septate and hyaline, l a t e r three-septate, olivaceous-brown, more or less constricted at septa, SI-33 x (6-) 8.5-9 (-10) ^ i . On l i v i n g leaves of Abies amabilis(Dougl.) Forbes, Terrace* leg. W.G.Ziller (H-l914, V-649S); A. grandis Lindl., Shawnigan Lake, l e g . J.Roff (H-65), Jordan River, l e g . D.C.Buckland (H-l913, V-2952I; A. laaiocarpa (Hook.) Nutt., Mt. Revelstoke, l e g . D.C.Buckland (0-19289, u"-398), leg. G.P.Thomas (H-1912, V-5675); Picea sitchensis (Bong.) Garr., Queen Charlotte Islands, l e g . R.B.Foster (TM.821); Tsuga heterophylla (Raf.) Sarg., Mt. McPherson, l e g . D.C.Buckland (U-635). Herpotrichlella Petrak Perithecia superficial, subeoriaceous, globose,„.covered on a l l sides by spines or setae, which are brownish-black, septate* acuminate; asci oblong-clavate, eight-spored, aparaphysate; spores subbiseriate, ovate-oblong,, brown, three-septate. Herpotrichlella sp. (Plate II, fig.17) Perithecia black, membranaceous, superficial, on twigs, covered with brown, septate, anastomosing hyphae which form a subiculum, globose with a minute ostiole, about 210 ji diameter; asci oblong-ovate, sessile or short-stalked, eight-spored, aparaphysate, 60-75 x 30-36yi; spores dull brown, three-septate, sli g h t l y constricted at the septa, curved, guttulate, 30-33 x 9-12 j i . On Abies amabilis L i n d l . , Cowichan Lake, l e g . R.E.Foster (H-2337, V-2491)0 This collection i s exceedingly puzzling: i t i s similar to Meliola In subiculum, but the p e r i -thecium i s ostiolate; the peritheeium, except for subiculum, and ascus shape would plaee i t in Mycosphaerellaceae; the spores are similar to some of Leptosphaeria. It most nearly f i t s into the genus Herpotrichlella, where i t is plaeed for the present, but the only species described under 60. that genua does not f i t this collection* Triehosphaerla Ifcki* Perithecia small, superficial, membranaceous or sometimes of firmer, subcarbonaceous texture, spherical or ovate, hairy or b r i s t l y ; asci oblong or cyli n d r i c a l , eight-spored, peraphysate; spores oblong, ovate or c y l i n -drical, continuous, hyaline* T* brevlseta Dear* (Plate II, fig*18) Perithecia black, crowded, appearing to thee naked eye as a continuous stratum, three but not quite four to the l i n e a l mm*, globose-conic; bristles 15-20 u, usually limited to the basal half of the perithecium; asci linear, 50-75ja, shorter than the abundant paraphyses; spores uniseriate, nucleate at each end, hyaline, 6-7 x 3-3.5 ja* On rotten coniferous wood, Victoria, A p r i l , 1915, John Macoun (Dearness 1916: 99)o A collection on bark of Betula papyrifera Marsh, Silver Creek (H-2331) appears to be this species* Perithecia 160-200 u diameter, ostiole papillate, gregarious with basal spines forming a thin subiculum; asci cylindrical, 60 x 4*5-6 jx; spores uniseriate, hyaline to greenish, 7-6 x 1*5-3 p., two-to three-guttulate, unicellular* 10. Melanommeae Perithecia globose to conical, s u p e r f i c i a l , carbonaceous or woody, occasionally coriaceous, smooth walled or short spiny, asci cylindrical or clavate, eight-spored; paraphyses usually present; spores one- to several-celled, hyaline or dark* Spores one-celled, dark brown* Perithecia covered with short spiny hairs*. .......*.»Conioehaeta 61 o Perithecia smooth... ..<,..................... .Rosellinia Spores two- to se vestal-celled, hyaline or brown. Perithecia rough-tubercular; spores two-celled, hyaline Perithecia smooth; spores two- to several-celled, brown Bertla de Not* Perithecia superficial or nearly so, irregular in shape, coriaceous-carbonaceous, surface tubercular or coarsely wrinkled, glabrous, black; asci clavate, four- to eight-spored; spores elongate, subcylindrical, uniseptate, hyaline; paraphyses present. B. moriformis (Tode) de Not. (Plate II, f i g . l ? j Plate VI, fig.36) Perithecia crowded, superficial, ovate-globose, surface coarsely tubercular-roughened, . 500-800 jx diameter; asci elongate-clavate, stalked, 130-165 z 14-16 u, eight-spored; spores crowded, hyaline, fusoid-cylindrical, curved, with two guttules, uniseptate, 25-40 (-52) z 6-7 jx. On bark of AJnus sp., Vancouver Island, l e g . J".Macoun (OM unnumbered, Eeb.10, 1915). Coniochaeta Sacc. Perithecia superficial, covered on the upper part with spiny hairs; asci cy l i n d r i c a l , eight- to many-spored; spores uniseriate, dark, one-celled, slightly discoid, germ s l i t elongated. 0. leucoplaca (Berk. & Rav.) Cain (Plate II, fig.20) Perithecia super-f i c i a l , minute, covered with straight, dark brown, pointed hairs 30 z 4 fx; asci eight-spored, perforate at the apex; paraphyses f i l i f o r m ; spores obliquely uniseriate, discoid, 7-9 z 6-8 z 5-6 fx, with an elongated germ s l i t in the narrow face, surrounded by a narrow gelatinous sheath. Oh cardboard i n moist chamber, collected Duncan (H-1931); on horse dung, U.B.C, (H-1925). ....Bertie •Melsnomma 62. Melanamaa Pckl. Perithecia gregarious or scattered, superficial or erujgpent, carbon-aceous, black, glabrous, spherical or ovate; asci cylindrical or clavate, eight-spored; spores oblong or fusoid, two- to several-celled, brown* Spores small, 10-12 z 3-5ya, crowded biseriate t > » »»»*M* parasitieum Spores larger, 15 jx long and over* Second c e l l of spore somewhat enlarged, spores 18-28 z 6-10 ^ i . . . . . . . . . .Mc cine re um Second c e l l not noticeably enlarged, spores 15-18 z 4-6 y i o . . . . . . . . . . . . .Mo pulvia-pyrius Mo cinereum (Earst.) Sacc 0 (Plate II, fig.21) Perithecia gregarious, attached to inner bark and erumpent through epidermis, becoming free, spherical, black, 200-400 p diameter; ostiole papillate or umbilicate; asci cylindrical-clavate, 120-150 z 10-12 pi paraphyses fi l i f o r m ; spores uniseriate or partly bis_*iate, oblong, obtuse, 3- (5-) septate, second c e l l enlarged, constricted at the septa, greenish-hyaline, then yellow, 18-28 z 6-10 ji* On Saliz babylonica L . , North Vancouver, lego S©Brown-John (H-1927)* M. parasitieum E l l . & Ev* (Plate I I , f i g . 22) Perithecia scattered or gregarious, superficial, ovate-hemispherical, 110-165 p. diameter, rough* black; ostiole papillate; asci oblong-cylindrical, 40-60 z 8-12p, sessile, aparaphysate; spores crowded-biseriate, grey-brown, oblong-fusoid, three-septate, slightly constricted at the septa, 10-12 z 3-5/1* On stromata of Diatrype sp., on rotten wood, Comoz, leg. J .Macoun (OM unnumbered, May 3,1887). 63o Ma pulvis-pyrlus (Perse) Eckl© (Plata I I , fig»23) Perithecia crowded, sometimes scattered, superficial, spherical or ovate, wrinkled or rough-ened, black, carbonaceous, 400 u diameter; ostiole papillate; asci c y l i n -drical to subclavate, stalked, eight-spored, 80-125 z 6-9 paraphyses fil i f o r m ; spores uniseriate, oblong, straight or curved, three-septate, constricted at the septa, brownish, (10-} 15-18 z 4-6 u. Common on dead wood; on Alnus oregona Nutt., Gowiehan Lake, leg* W.G.Ziller, det* B.Horner (0-26114, V-3460, H-1919); Corylus californica (A.DC.) Boss, Goldstream Park, leg* W.G.Ziller (0-26094, V-3507, H-1'920.); on Vaccinium corymbosum L*, Lulu Island, leg* H.Stace-Smith (0-26185, H-1917); on dead wood, Duncan (H-1906), U.B.C. (H-1918), Cathedral Lakes (H-1916). Rosellinia Ces. & de Note Perithecia superficial, occasionally with bases sunk in the substrate, coriaceous or carbonaceous; spherical or ovate, black, bare, ostiole dis-tinct; asci cy l i n d r i c a l , eight-spored; paraphyses f i l i f o r m ; spores e l l i p s o i d , oblong or fusiform, one-celled, brown or black. On scales of pins cones; spores 8-12 z 6-7 U....R. obllquata var* Americana On dead wood* Spores 8*8-15 z 6-7.5 u* without appendages.................CR. ovalia Spores 18-23 z 6-7 j i , with a short (6-8 ji) hyaline appendage at each end. o............................B. thelena var. pinea B. obliquata (Somm.) Sacc. var. Americana E H . & Ev. (Plate II, fig*24) Perithecia gregarious, 200-400 ji diameter, depressed-globose, ostiole acutely papillate; asci cy l i n d r i c a l , (90-) 120-130 z 6-7 jx\ spores uniseriate, e l l i p s o i d , brown, one-celled, 8-12 z 5-7.5 u; paraphyses f i l i f o r m . On scales 64* of dead cone a of Pinus ponderosa Dougl., Vernon (H-1907). This collection has spores approaching the size of the species (10-12 x 7 u, Winter 1887: 229), but the perithecia are not obliquely attachedo B. ovalis (Ell*). Sacc, (Plate II, fig*25) Perithecia superficial, globose, carbonaceous, 200-300 u diameter; asci long cyli n d r i c a l , 90-125 x 7-9 (-10) n; paraphyses broad band-like; spores uniseriate, oblong-ellipsoid, somewhat flattened, with a longitudinal germ s l i t , 8*8-15 x 6-7*5 x 5-6 j i , dark brown* On dead branches of Artemisia tridentata Mutt., Princeton (H-l909). R. thelena (Fr.) Rab. var. pine a Sacc* Perithecia scattered or gregarious or sometimes crowded, spherical, with a strongly papiHiform ostiole, smooth, thin and b r i t t l e , brownish-black, about 1 mm. diam,, seated on a superficial, l&osely adhering, densely interwoven but thin, brownish-purple subiculum; asci cylindrical, stipitate, eight-spored, 90-130 x 8-9 u (p.sp.), with eonglutinated paraphyses; spores uniseriate, oblong, sub-inequilateral, brown, 18-23 x 6-7 i i , with a short (6-8 p.) 9 hyaline, spine-shaped appendage at each end. Sent from B r i t i s h Columbia by Dr.Hacoun. ( E l l i s and Everhart 1892: 166). Not seen. l l e Ceratostomataceae Similar to Melanommeae. Perithecia more coriaceous than carbonaceous, with mors or less Elongated beaks, often very long and hairlike; asci ovate, clavate, or cylindrical, often evanescent before spores mature; spores variously shaped and colored* Ceratostomella Sacc* Perithecia superficial, free or sli g h t l y sunk in the substrate, globose, 65* beak long and hairlike; asei ovate, eight-spored, early evanescent; spores oblong, blunt or pointed, one-celled, hyaline* Ceratostcmella ap* (Plate II , fig*26) On Pinus monticola Dougl*, Silverton, l e g . AoK.Parker (H-1915). This collection comes nearest to C* sphaerosperma (Pekl•) Sacc*, but does not agree completely with that species* Perithecia black, carbonaceous, superficial, globose,240-340 u diameter; beak obtuse at apex, 320-540 x 65-70 u ; asei not seen; spores hyaline, clustered together, when emitted forming a drop at tip of ostiole, globose to ovate, 1*5-3 p.* IS* Oucurbitarlaceae Perithecia gregarious, formed under the surface of the substrate, later erumpent and free on a crusty or cushion-like stroma, coriaceous or carbonaceous, firm; asci clavate or cyl i n d r i c a l , eight- to many-spored; paraphyses^present; spores one- to several-celled, hyaline or dark* Spores one-celled, hyaline.......... .Acanthonitschkea Spores two-celled, hyaline to brown .Otthia Acanthonitschkea Speg* Perithecia superficial or a brownish-black subiculum of spiny, irideseent hyphae; perithecia turbinate, ostiolate, collapsing to cupulate, scattered or densely gregarious, brownish to black, armed with spines, coriaceous to carbonaceous} asci clavate, long-stalked, evanescent, eight-spored , aparaphysate; spores biseriate to crowdedj hyaline, one-celled, inequilateral to allantoid* A. coloradensls Cash & Davidson (1940: 728) (Plate II, fig.27) Perithecia 66. clustered, carbonaceous, subglobose. to turbinate, collapsing, black, dull or shining, setose, 200-300 p diaiaeter; setae numerous, dark-brown, r i g i d , short and thick, 15-40 (-55) p long, 7-10 p thick at base; asci cylindrical, 70-75 x 4-5p\ spores hyaline, one-celled, 2-guttulate to pseudoseptate, broad-ellipsoid, obliquely uniseriate, 6-8 x 3-4p» On bark of Abies lasioearpa (Hooke) Nutt,, Cathedral Lakes (H-l911)• Otthla Nitschke Perithecia clustered, at f i r s t under the substrate and l a t e r becoming erumpent, globose or ovate, black, thick, ooriaceous, smooth; asci cylin-drical, stalked, paraphysate; spores e l l i p s o i d , uniseptate, hyaline (sub-genus Otthiella) to brown© Otthla sp, (Plate II, fig•28) Perithecia cespitose, erumpent i n groups through bark, black, coriaceous, globose, 250-450 p diameter, short papil-late, collapsing to become oupulate; asci broadly cy l i n d r i c a l , abruptly tapered to a short stalk, thickened at the apex, four- to eight-spored, 90-150 x 15-21 p't p,araphyses numerous, branched; spores biseriate, hyaline to olive green and f i n a l l y l i g h t brown, uniseptate, constricted at the septum, granular, 21-36 x 9-14 pe On branches of Populus tremuloides Michx,, Noisy Creek, Ashnola Dis t r i c t (H-1860); Populus sp., Soda Creek, leg. J.Bancroft (H-2336); Sambucua sp.,1 Soda Creek, le g . J.Bancroft (H-2335). These three collections are very similar, although that on Populus sp. shows slightly smaller asci and spores. They do not appear to f i t any of the described species. 67* 13* Corynellaceae Mycelium endophytic, mostly parasitic; stromata erumpent, sharply demarcated, black, coriaceous to carbonaceous; lobes of the stroma elon-gating verti c a l l y into spermogonia or ascocarps; ascocarps greatly elon-gated into slender cylindrical columns; ascigerous locule varying from basal to apical; apez rounded and undifferentiated, or definitely and variously lobed, without true ostiole, opening by a transverse or several radiating c l e f t s , or perforated and funnel-fora; asci ovate to clavate, thin-walled, evanescent, stalks long and delicate, eight-spored; paraphyses lacking; spores crowded, inordinate, unicellular, smooth or echinulate, brown to hyaline* Caliciopsls Peck Stromata scattered to crowded; lobes becoming spermogonia and later ascocarps; swollen ascigerous locule from terminal to basal; asci ovoid to el l i p s o i d , with a delicate stalk; spores e l l i p s o i d to globose or subfusi-form, smooth, yellowish to blackish-brown. C. Pseudotsugae Fitzp* (Plate II, fig.29, Plate 71, fig.37) Ascigerous locule subapioal, asci 14 x 7 u, spores e l l i p s o i d , 4 z 2 n* On Pseudotsuga  t a z l f o l l a (Lam.) B r i t t * Type collected at Daisy Lake, not seen (Fitzpatrick 1942: 496); from Lake Cowichan, leg. R.E.Foster (U-119, 7-237, 7-235), Nakusp leg. D.C.Buekland (U-22), Pemberton, leg* S.C.Frost (7-4541), Sayward, leg. W.A.Porter (H-1830, 0-21367, 7-2789). 14* Amph1sphaer1ace as Perithecia without stroma, at f i r s t sunken i n the substrate, at maturity more or less erumpent, but always with the bases p a r t i a l l y immersed* carbonaceous, smooth, occasionally hairy; ostiole papillate; asci clavate to 68. cylindrical; paraphyses present; spores two- to several-celled, hyaline to dark colored. Strickeria Korber (Teiehospora Fckl.) Perithecia scattered to gregarious, at f i r s t buried, later nearly superficial, spherical or ovoid, coriaceous or carbonaceous, frequently - J collapsing; ostiole papillate or inconspicuous; asci cylindrical or clavate-cylindrical, eight-spored, peraphysate; spores e l l i p s o i d , mur^iform, brown. Spores obliquely uniseriate, 22-30 (-33) u long. Spores with one longitudinal septum, end ce l l s the same color as the rest of the spore.*,,. ,,......*»*.*..*...,.,S. obducens Spores with one to two longitudinal septa, end eells lighter in color .......,.,,.,.....,,S. Typhina Spores crowded biseriate, 30-36 x 10 j a , . . . . . . . . . . . . 8 . Amelanchleris S. Amelanchieris Barle (Plate II, fig.30) Perithecia scattered or gregar*? ious, black, smooth, collapsing, 300-500 p. diameter; asci clavate-eylin-d r i c a l , 100-120 x 16-22 (-30) fx, eight-spored; paraphyses fi l i f o r m ; spores crowded-biseriate, ovoid-oblong, long hyaline, f i n a l l y brown, curved, 5-7-septate, with a partial vertical septum, somewhat flattened, (21-) 30-36 x 10-12 x 7 u. On weathered wood of Amelanchier sp., Penticton (H-1928). Asci i n this collection are considerably broader, otherwise as in the species. Spores several-celled, hyaline to brown Trematosphaeria Spores muriform, brown Strickeria 69. S. obdueens (Fr.) Wint© (Plate I I , fig.SL) Perithecia thickly scattered, superficial, bases immersed, globose,papillate, collapsing, 300-500 ja diameter; asci long cylindrical, 130-150 (-185) z 15-22 u; paraphyses f i l i -form; spores obliquely uniseriate, fusoid-ellipsoid, brown, 5-7-septate, constricted at the central septum, one.vertical septum i n a l l but end c e l l s , 28-30 (-33) z 9-12 (-14) u* On Acer sp., U.B.C. (H-1929); Alnus  oregona Nutt., leg. S.Brown-John, U.B.C* (H-l910); A. sitehensia Sarg., leg. D.C.Buckland (U-666); Artemisia tridentata Nutt., Princeton (H-l909)© Striokeria (Cucurbitaria) Typhina Sll# & Ev. (Plate I I , fig.32) This species i s , according to Welch (1926: 73), a Strieker i a (Teiehospora)© Perithecia subglobose, thick-walled, immersed when very young and becoming erumpent before maturity, basal portion remaining sunken; bases of p e r i -thecia appear to have been formed above empty pyenidial cavities which are shrunken and flattened by the growth of the perithecia; asci c y l i n d r i c a l -clavate, short-stalked, paraphysate, 120-150 z,15 (-18) u; spores uniseriate, oblong-ellipsoid, 5-6-7-septate and mursiform with one or two longitudinal septa, slightly constricted at the central septum, yellow-brown, end c e l l s subhyaline, 22-30 z 12-15 u. On Rhus glabra L., U.B.C. (H-l955). This collection agrees with E l l i s and Everhart's description, which is here emended to include mention of the superficial nature of the perithecia above the stromatic-appearing remains of pyenidial walls© I f examination of the type material shows the same condition, as Welch states, this species should be transferred to Striekeria as S. Typhina (Ell© & Ev.), since none of the other species of Striekeria show that character as well as the light color of the end cells of the spore3© 70« Trematoapnaeria Fcklo Perithecia carbonaceous, superficial or subsuperficial, conical or globose; asci eight-spored, paraphysate; spores oblong or fusoid, three-to several-septate, hyaline or brown, * T . ?fissa (Fckl.) Wint, (Plate II, fig.33) Perithecia scattered or grouped, mostly with basal half immersed, later erumpent, 350-450 u wide, globose, papillate, black, somewhat rough; asci cylindrical or clavate, stalked, eight-spored, 70-110 z 7-9 11; spores uniseriate, long-ellipsoid, brown, four-celled, scarcely constricted, 12-16 z 4?5»5 LU On Acer sp,, U . B . C , (H-1929); this collection comes nearest to this species, but spores are longer, 15-21 z 6-7,5 j i , and wood around the perithecia i s stained purple, however i t does not have purple ostioles as i n T o phaea (Rehm) Wint* 15 0 Lophlostomataeeas Perithecia single, occasionally grouped, without stroma, but sometimes on a blackened substrate, at f i r s t more or less deeply Immersed in the sub-strate and often at maturity with only the ostiole erumpent, usually however erumpent and almost completely superficial; black, carbonaceous, smooth or somewhat hairy; ostiole compressed^aore or less drawn together and opening by a longitudinal s l i t ; asci c y l i n d r i c a l or clavate, eight-spored; paraphyses present; spores long, pointed or rounded, with or without appendages, one-to several-celled or muriform or f i l i f o r m , hyaline or dark-colored* Spores several-celled, hyaline Spores several-celled, brown,. •Lophlotrema •Lophiostoma 71. Lophiostoma Pries Perithecia typical, of varying sizes; asci cylindrical-clavate, stalked; spores e l l i p s o i d to fusiform, with three or more cross-ii-lla, dark colored, ends rounded or with appendages at one or both ends. Perithecia small, 250-300 p diameter; asci 90-105 u i n length... JL. caulium Perithecia larger, 600-1000 /.diameter; asci 105-150 p i n length. •••• .L. appendiculatum L. appendicnlatum Fokl. (Plate II, fig.34) Perithecia innate, then erumpent, 600-1000 p diameter; ostiole compressed; asci clavate, 105-150 z 12-17 p, peraphysate, stalked; spores biseriate above, uniseriate below, e l l i p s o i d , straight or curved, (3-) 5-7-septate, constricted at the septa, with cap-li k e appendages at both ends which soon disappear, yellow-brown, 24-35 at 7-9 u. On Artemisia trldentata Nutt», dead weathered branches, Princeton (H-1909). Appendages are not visible on amy mature spores but can be faintly seen on the immature ones. L. caulium (Er.) de Not. (Plate II, fig.35, Plate VI, f i g . 38) Perithecia often covered by the epidermis, later erumpent, globose, ostiole compressed, black, 250-300 p diameter; asci clavate, eight-spored, 90-105 z 10-14 p; spores biseriate, oblong-fusiform, without appendages* 4-8-celled, constricted at the cross-walls, yellow-brown, 20-30 z 5-8 p; paraphyses f i l i f o r m . On Phloz speclosa Pursh., Penticton, leg. J.W.Eastham (H-1902). Lophiotrema Sacc. Perithecia typical; spores oblong or fusiform, three- to several-celled, blunt or with small appendages at both ends, hyaline, often be-coming brown with age. 72* Spores 12-14 x 3-3*5 fx; ostiole varying from compressed to conical or imperfectly three-cleft ......... . *Le aequivocum Spores 20-26 (-35) z 5-8 jx; ostiole cylindrical or compressed*..»*L* nucula L» aequivocum E l l * & Ev© (Plate II, f i g * 36) Perithecia gregarious, erump-ent, black, about 330 jx diameter; ostiole subconical, s l i g h t l y compressed; asci subcylindrical, 80 (-108) z 5 (-10) jx; paraphyses f i l i f o r m ; spores yellowish-hyaline, uniseriate, three-septate, 12-14 (-20) z 3-3.5 (-6) p.* The species was described from a collection made by STohn Macoun "on de-corticated wood of some deciduous tree, B r i t i s h Columbia, May, 1887" ( E l l i s and Everhart 1887: 118)* The specimen examined, on dead wood, Comoz, Vancouver Island, May 3, 1887, leg* Ja Macoun (OM-34), i s presumably cotype material* Spores are larger than i n description, 15-22*5 x 4*5-6 u, and many show hyaline appendages at both ends* L* Tnucula (Era) Sacca (Plate II, fig.37) Perithecia innate-superficial, ovoid, at f i r s t with a short, cylindrical or compressed ostiole, 300-500 u diameter; asci cylindrical-clavate, 90-125 x 10-12 n; spores biseriate, oblong, three-septate, constricted at the middle septum, greenish-hyaline, 20-26 |-35) x 5-8 u* Two collections are placed doubtfully as this species; in both the ostiole i s tpery short and the opening often irregular* On dead branches of ?Ghamaecyparis nootkatensis (Lam«), Spach© (H-1903) and Tsuga sp. (H-l901), Mount Seymour* 16* Myeosphaerellaceae Perithecia mostly formed under the epidermis, remaining covered or becoming erumpent by disintegration of the covering layer, usually with only the papillate or conical ostiole protruding, globose, mostly very small, 73* membranaceous or leathery, fragile; asci fasciculate, ovate, cylindrical, or clavate, eight- to many-spored; paraphyses lacking; spores various, one- to many-celled or muriform, hyaline or dark colored* Spores one-celled, hyaline* Perithecia seated on a subiculum of branched hyphae......... oAscosp_ora Such a subiculum lacking. .Cuignardia Spores more than one-celled, hyaline or dark. Spores two-celled* Spores hyaline. Asci eight-spored............................oMycosphaerella Asci many (16-24) spored.......................Rehmiellopsls Spores brown........ .Phaeosphaerella Spores more than two-celled* Spores with transverse walls only*.. ..Sphaerulina Spores muriform. Spores hyaline. Perithecia in a light brown stroma, which forms spots or lesions..•• .Pseudoplea Perithecia not in such a stroma.........Pleosphaerulina Spores brown. ,..Leptoaphaerulina Ascospora Pries Perithecia sunken in superficial layers of the substrate, seated on a growth of branched, thick brown hyphae, globose, black, smooth; asci ovate to obclavate, fasciculate, eight-spored, small; spores one-celled, hyaline, ellipsoid; paraphyses lading* 74. Spores large, 15-16 p long*. ............. .....A. gramlnis Spores smaller, 10-13 p long........ ...A. Ruborum A. gramlnis ff.Lind (Plate III, f i g . l ) Perithecia superficial, applanate, on effused, branched mycelium, 80-100 p diameter; asci fasciculate, sessile, ovate-oblong, eight-spored, 24-42 x 12-£-7 u; spores e l l i p s o i d , hyaline, granular, inequilateral, 15-16 (-22) x 4?-4.5 (-7.5) p» Oh Ppa paucispicula Scribn. &Merr., Summit between Francois and Ootsa Lakes, leg. J.W.Iastham (H-2006); P. secunda Preal., Ootsa Lake, leg. J.W.Eastham (H-2005). A. Ruborum (Oud.) Zeller Perithecia at f i r s t subcuticular, then erumpent, carbonaceous, arising from a ramifying cushion of dark mycelium, 100-200u diameter; ostiole small, circular to lenticular; asci cy l i n d r i c a l , larger below, eight-spored, 40-55 x 9-12 n; epores e l l i p s o i d , obtuse at both ends, hyaline, 10-13 x 4-5 p.. On Rubus sp., raspberry, not seen (CPDS 1939). Guignardla Tiala & Ravaz (Laestadia Awd.) Perithecia immersed, globose or somewhat flattened, black, membranac-eous, smooth, ostiole plane or short papillate to conical, sometimes lack-ing; asci clavate to elongate, eight-spored, aparaphysate; sporesaellipsoid or fusiform, hyaline,one-celled. Asci large, (48-) 60-80 x 9-13 u e Spores granular, 12-17 x 4.5-5 /u...* ...............G. Bidwellii Spores smooth, 13.5-16.5 x 6.5-7p • •* ».G. Vaocinil Asci smaller, 30-45 (-54) x 9-15p. On Gramineae* .L. graminieola On other plants. 75o On Potentilia............. ...G. Potentillae On other plants. .L. e.reunitegens G. Bldwellli (Ell.) Viala & Ravaz. Perithecia minute, globose, immersed, f i n a l l y suberumpent; asci clavate-cylindrical, obtuse, 60-70 z 10-13 p., aparaphysate; spores e l l i p s o i d to oblong, one-celled, hyaline, granular, 18-17 z 4.5-5jio On V l t i s sp., grape, not seen (CPDS 1935, 1946). Laestadia ?circ_.tegens Rostr. (Plate III, fig.2) Perithecia gregarious* lenticular, 60-135 u diameter; asci cylindrical-clavate, curved, apara-physate, sessile, 30-45 (-54) z 9-12 (-15) ^a; spores one-celled, fusoid-oblong, guttulate, hyaline, (7.5-) 10-15 z 3-5 p» Several collections appear to belong to this species: on Campanula TMedia L*, Duncan (H-1996); Dlanthus sp., U.B.C. (E«*1997); Brigeron l i n e a r i s (Hook.) Piper, Tranquille, leg . T.M.C.Taylor (H-1990); I r i s germanica L., Duncan (H-1993); Lupinus sp., U.B.C. (H-1995); Oenothera biennis L., U.B.C. (H-1992), Duncan (H-1994). Laestadia graminicola Rostr. (Plate III, fig.3) Perithecia minute, abundant, gregarious, arranged i n parallel lines under the epidermis, globose, 60-105 p. diameter; asci fasciculate, oblong-clavate, aparaphysate, sessile, 30-45 (-54) z (10-) 12-14 p \ spores fusoid-oblong, hyaline to greenish, one-celled, 12-15 (-17) z 4-5p» On Agrostis hlemalis (Salt.) B.S.P. var. geminate (Trin.) H i t c h c , Vanderhoof, leg . J.W.Eastham (H-1991); Puccinellla  Hut t a l l iana (Schult.) H i t c h c , Doyle, leg. J.W.Eastham (H-2004)© G. Potentillao (Rostr.) Lindau (Plate III, fig.4) Perithecia black, membranaceous, erumpent, globose-lenticular, 150 p. diameter; asci c y l i n -drical-clavate, curved, 30-45 (-54) z 8-12 (-15) yu; spores hyaline to greenish, one-celled, biseriate, fusoid-oblong, 9-12 (-15) z 3-5 (-6)^ 1. 76o On Potent i l i a diversi f o l i a Lehm. t Kennoo Mining Camp, lege G .A.Noel (H-2003)© G. ?Vaeelnil Shear (Plate III, fig . 5 ) Perithecia mostly hypophyllous, globose, 165-210 u diameter, immersed, short ostiole erumpent; asci clavate-cylindrical, short stalked, aparaphysate (48-) 60-80 x 9-13 (-18) n; spores hyaline, one-celled, e l l i p t i c a l to subrhomboid, somewhat inequilateral, 13-16o5 x 4-7 u© A collection on Arctostaphylos Columbians piper, Duncan (H-2000), f i t s this specieSo Leptosphaerulina McAlpine Perithecia immersed, globose to flattened; asci aparaphysate, eight-spored; spores oblong, several-septate and muriform, brown© Leptosphaerulina sp© ^Plate III, fig©6) Perithecia black, crowded and bursting through the epidermis i n small groups, or single, membranaceous, globose, 120-210jx diameter; asci fasciculate, clavate, attenuated to the base, thickened at the apex, eight-spored, 52-60 x 18-24 u; paraphyses lacking; spores yellow-brown, oblong-ellipsoid, ends rounded, 3-4-septate, constricted at the central septum, upper half broader, narrowed below, one longitudinal septum through most of the c e l l s , irregular in the ascus, 18-21 x 9-10 u© On Sequoia sempervlrens End!©, U.B.C© (H-2533)© This collection f i t s the genus well, but does not belong to any of the species described i n i t . Mycosphaerella Johans. (Sphaerella Ces. & de Not., non Sommerf©) Perithecia immersed, remaining covered or becoming erumpent, ostiole plane or papillate, membranaceous to coriaceous, globose to conical, smallj asci eight-spored, fasciculate, cylindrical, clavate, oblong, ovate, or 77© obovate; spores hyaline or greenish, ellipsoid, two-celled; paraphyses lacking* On Fter idophy tes • . . . . o......... .Me indistinct a On Spermatophytes. On Monocotyledons* Spores small, 9-10*5 u long....... ..........M* graminicola Spores larger. Spores narrow, 2*5-4 jx wide* Peritheeia 120-160 jx diameter; asci oblong©............ • ©Mo eariclcola Perithecia less than lOOp diameter; asci ovate to obclavate© On Typha • ...M© Typhae On other plants© Asci 22-30 x 10-15 u© Spores 15-18 z 2.5-5 u. . . ..*M© perexlgua Spores 8-12 (-15) z 5-4 u.>M. Wichurlana Asci 30-40 z 10-15 u*.............«M© puailla Spores over 4 u wide© Perithecia in long rows in the leaf........M. llneolata Perithecia scattered or gregarious, not in definite rows... ..M. Tassiana On Dicotyledons© On leaves of trees and shrubs© Spores over 20jx long© Spores broad, 6-7.5 u wide©©»••• ©M. Auerswaldil 78© Spores narrower, not over 5 u wide* Spores 26-35 u long*............... a . . .»M» Grossulariae Spores (17-) 20-25 (-28) jx long.... *M*_jrubi> Spores less than 20 u long* Perithecia clustered on conspicuous spots on the evergreen leaves.... . . . . . . . . . . . . . . . >M* arbuticola Perithecia scattered or gregarious but not on con-spicuous spots. Spores 13-18 u long* On Rosa...•..•••«••••.. .••«.•.. . . .*•o.»M* rosicola On Populus........... . . . . . . . . . . . . . . . M * populifolia Spores shorter, 6-10 (-13*5) u long* On Populus*..........o. . . . . . . . . . . . . i»M* orbicularis On other leaves* On Prunus*............. . . . . . . . .M. elnerascens On other leaves.............. .Mo punctiform i s Not on leaves of trees and shrubs. On l i v i n g leaves, on spots* Spores small, 7-8 x 2-2.5 n »M. Ghimaphilas Spores larger, 12-20 x 4-5ya. On Pachystlma >»M. Pachystlmae On Rumex...... .M« strcmatoidea On dead leaves or stalks. Asci oblong-cylindrical, not over 12 u wide* Spores 7-8 u long* Asci 27-30 x 6 - 7 . 5 j x » . . . . . . . . . . . . . . . . « . . M * earliana A s c i 34-42 x 7.5 i i o . . . . . . . . . . . . . . . . » . M . microspila 79. Spores mostly over 11 jx long* Asci 9-12 jx wide. Asci 36-45 x 9-11 ya.o *»»*.«***** *•' .M* confinis Asci 58-62 x 12 «M* pinodes Asci 7-9 jx wide* Spores 4-7 u wide** ».»»».*•** • *M» vagans Spores up to 3*5 jx wide* On Fr agar l a and Po tent i l i a . *M* Eragariae On other plants..... . . . . . . . . . M * punctiformla Tar* Clematidls Asci ovate* obovate or obdavate* Spores large, 25-40 jx long* On R a n u n c u l u s * . . . . . . . . . . . . o • * M » Ranunouli On other plants***..........»....«.M* dolichospora Spores smaller, not over 30jx long* Spores not longer than 14 jx* Perithecia seated on thin brown radiating mycelium**• * « * e o * * * * * . . . . . . * » * . * * • • »*M* Minor Perithecia not seated on mycelium* On Umbelli te rae * * * • . . . . . . *M» sage dioUdes On other plants* * * * * . * . . . . . . . . . M c melaena Spores mostly longer than 14jx. On Polygonaceae ............. .<> *M. Polygonorum On other plants* On Craciferae...........«M» brasslcicola On other plants* On Slbbaldia, perithecia less than 75 ^ i diameter*.......M* innumerella 60. On other plants, perithecia mostly more than 75 jx diameter» Spores broad, 7-9 p wide; on Erigeron and Artemisia^N.... t »» «Me eriophila Spores generally narrower, 3©5-8*5 a wide; on many plants»o o « . . . . . o . . » o M . Tassiana Mo arbuticola (Pk.) House (Plate III, fig*7) Perithecia on greyish spots with a red border, epiphylloua, black, small, 100-135p diameter; asci oblong, fasciculate, 5S-60 x 9-1.1 tt; spores crowded biseriate, hyaline, uniseptate, 18-15 x 3 p» On Arbutus Menziesil Pur she, Saanich, lege Wo Jones (H-*771, H-2101, CPUS 1931, 1934, 1937)« M« ?Auerswaldil (Flelschhe) Migula (Plate III, fig.8) Perithecia hypo-phyllous, immersed, gregarious, globose-conical, black, 100-200 p diam-eter; asci obclavate, very short stalked, 45-75 x 10-23 p; spores ir r e g -ularly biseriate, e l l i p s o i d , narrowed towards the lower end, uniseptate, hyaline to greenish* with two or three oil-drops i n each c e l l , 22-30 x 4-7.5^ 1© On CornuB N u t t a l l i i Audo, Duncan (H-2286)» This collection has broader asci and spores than the species description but otherwise f i t s wello M> brass!cieola (Duby) Lindau (Plate III, figo9) Perithecia numerous on spots on the leaves, amphigenous, globose to lens-shaped, 60-90 p diameter, brown-black, ostiole short papillate, erumpent; asci broad-fusoid, narrowed towards each end, 36-51 x 10-15 u; spores b i - to t r i s e r i a t e . 81. oblong, uniseptate, slightly curved, scarcely constricted, 15-21 x 3-4.5 greenish. On Braasica oleracea L. Tar. botrytis L«, Saanichton, leg. W.Jones (H-775)| var. capitata L», Dewdney, l e g . W.Jones (H-773,, CPDS 1943, 1945); var. gammlfera Zenker, Sidney, leg. W.Jones (H-774); var. i t a l i c a Plenehk., N.Saanich, l e g . W.Jones ;(fr-772)_ M. carlcicola (Fckl.) Lindau (Plate III, fig.10) Perithecia immersed-erumpent, globose, 100-160 p. diameter, black, ostiole short, punctifozm; asci oblong, sessile, 39-51 x 9-12 u; spores crowded biseriate, hyaline to greenish, uniseptate, oblong, straight or curved, 10-15 x 3-5 p* Cn Carex pyrenaica Wahl., Mt.Brent, Penticton* leg. J.W.Eastham (H-2056); Junous Drummondii Meyer, Mt.Apex, Penticton, l e g . J.W.Eastham (H-1989). Sphaerella Ohimaphilae BU.& Ev* (Plate III, f i g . l l ) Perithecia on spots on l i v i n g leaves, spots dark with a lighter centre, amphigenous, erumpent, globose, 75-UO/i diameter, black, membranaceous; asci obilavate-oblong, sessile, 30-45 x 6-10 p; spores crowded biseriate, oblong-fusoid, uni-septate, not constricted, 7-14 (-15) x 2-3 p» On Chlmaphila umbellata (L.) Nutt., Armstrong, leg . E.Wilson (H-2127). M. cinerascens (Fckl.) Migula (Plate III, fig.12) Perithecia amphigenous, gregarious i n small clusters or scattered, grey-black, globose-conical, erumpent, 90-105p diameter; asci oblong, nearly sessile, fasciculate, 30-45 x 6-9 p; spores long ovate, uniseptate, biseriate, p a r t i a l l y uni-seriate above, hyaline to greenish, 6-10 x 2-3 p* On Prunus emarginata (Dougl.) Walp. var. mollis (Dougl.) Brewer, U.B.C. (H-2287). M. coerulea ( E l l . & Bv.) Tracy & Earle (Plate III, fig.13) Perithecia 82. sparsely to thickly scattered, immersed, erumpent by a minute ostiole, black, globose to somewhat flattened, 100-150 p. diameter; asci oblong, fasciculate, 35-51 x 7-14ya; spores biseriate, fuaoid-ellipsoid, uni-septate, hyaline, s l i g h t l y constricted at the septum, 12.5-18 x 3-3.5 /i« On Aqullegia brevistyla, Chilko River, l e g . W.A.Newcombe (H-2863), A.  formosa Flach., Tenqmille Lake, Pemberton, leg. W.Taylor (H-2261), Revelstoke, l e g . J.Buckland (H-2262). Me conf i n i s (Kerst.) J.Lind (Plate H I , fig |14) Perithecia black, membranaceous, amphigenous, immersed, then erumpent, scattered or gre-garious, globose, papillate, black, 90-120 /1 diameter; asci oblong, sub-sessile, fasciculate, 36-52 x 9-13 jx\ spores crowded biseriate, greenish-hyaline, elongated, uniseptate, not constricted at the septum, 14-19 x 3-5yu. On Braba alpina L., Moose Mt.., Fe l l y Creek, leg. G.V.Copley (H-2138)• M. dolichospora (Sacc. & Fautre) Wehm. (Plate III, fig .15) Perithecia gregarious, globose-conical, papillate, 60-200 p. diameter, erumpent; asci stout clavate, apical wall thickened, 45-70 x 10-18 (-23) u; spores fas-ciculate i n the ascus, fusoid-cylindrical, straight or curved, uniseptate, hyaline, sl i g h t l y constricted at the septum, (22-) 25-40 x 2.5-5 ji« On Arenaria obtusiloba (Rydb.) Fern., Cathedral Lakes (H-2067). Sphaerella earliana Wint. (Plate III, fig.16) Perithecia amphigenous, crowded, globose to conical, black, 45-75/1 diameter, erumpent; asci fasciculate, oblong, short stalked, 26-30 x 6-7.5 jx\ spores crowded, clavate, uniseptate, not constricted at the septum, hyaline, 7-8 x l«5-3y_© On Fragarla chiloensis (L.) Duch., Glacier Point, Jordan River, l e g . J.W. Bastham (H-2126)© 83. Mo sriophila (Niessl) Dear* (Plate III, fig*17) Perithecia scattered, erumpent, globose, papillate, 90-210^1 diameter; coriaceous; asci ob-clavate, straight or curved, short stalked or sessile, 45-96 x 24-33 (-45) n spores greenish, uniseptate, biseriate-crowded, narrowing to the lower end, guttulate, cU)long-cuneate, 20-36 x 7-9 u» "On Artemisia longepedun- culata fiydbo, Mt« Baldy, Chua Chua, leg . V.C.Brink (H-2306); Brigeron sp*, Cathedral Lakes (H-2274, H-2270). M. Fragariae (Tul.) Lindau (Plate III, fig.18) Perithecia amphigenous, mostly hypophyllous, gregarious, immersed, becoming erumpent, globose-depressed, 35-120 ji diameter; asci oblong, fasciculate, nearly sessile, 33-50 x 5-9 u; spores crowded biseriate, fusoid, uniseptate, straight or curved, hyaline to greenish, 9-15 x 2-3.5 p.* On Pragarla Chileans i s (L.) Duch., (CPDS 1926, .1933, 1934, 1937, 1939, 1940); Potentilla palustris (L.) Scop., Stanley Park, Vancouver (H-1974). Ma graminleola (Fckl.) Sehroete (Plate III* figol9) Perithecia epiphyllous gregarious, ismersedrerumpent, black, globose,small, 80-100 u diameter, ostiole papillate; asci oblong or ovate-oblong, sessile, 22-27 x 9-12 n; spores oblong, uniseptate, hyaline to greenish, crowded, 9-10*5 x 2-3 u« On Dlst i c h l i s spieata (L.) Greene, Lac l a Hache, leg. G.A.Hardy (B>2187); var. striata (Gray) Beetle, Flying U Ranch, Cariboo, leg. J.W.Eastham (H-2186) * M. Grossulariae (Fr«) Lindau Perithecia hypophyllous, innate, gregarious, globose, minutely perforated, blaek, 155ftu diameter; asci short stalked, or subsessile, clavate, 55-66 x 8-12yu; spores t r i s e r i a t e , fusoid-elongate, slightly curved, uniseptate, not constricted, hyaline, 26-35 x 3-4yu On 84* Ribes spp*. currant and gooseberry, not seen (CPDS 1986). M« indistinct a (Pk.) Lindau (Plate III, f i g , 20) Perithecia innate, becoming erumpent, scattered or subgregarious, epiphyilous, globose,black* 50-70 ^ i diameter; asci clavate, short stalked, fasciculate, 48-58 z 9-12 u; spores crowded, hyaline to greenish- fusoid-elongate, straight or curved, obscurely septate, guttulate, 33-38 z 6 p.o On Pteridium aquilinum (L.) Kuhn., Saanichton (H-2996), Mount Seymour (H-2Q94)* Sphaerella lnnumerella Karat* (Plate III, fig*21) Perithecia hypophylloua, gregarious, erumpent, globose, papillate, membranaceous, black, 45-100 diameter; asci clavate-cylindrical, very short stalked, 42-60 z 8-12 jx\ spores imperfectly biseriate, usually six i n an ascus, oblong, uniseptate, not constricted, hyaline to greenish, 13-24 x 3-5 JU* On Sibbaldia pro- cumbens L«, Cathedral Lakes (H-2144)* M. lineolata (Rob* & Desm*) Schroet, (Plate III, fig*22) Perithecia amphigenous, immersed, seriate i n rows, globose, somewhat erumpent, black, 54-70diameter; asci obovate or oblong-clagate, sessile, 30-50 z 12-16*5 j i ; spores crowded biseriate, greenish-hyaline, oblong, curved, uniseptate, 15-18 z 3-5 On Carer ilmoaa L*, Tetana River, leg* Mrs* Fletcher (H-2204)* Sphaerella melaena (Fr») Sacc* (Plate III, fig,23) Perithecia black, densely crowded,ostiole plane, globose, 45-80 jx diameter; asci obovate* sessile, 18-27 z 10-15 jx; spores crowded,obovate-oblong, uniseptate below the middle, not constricted, hyaline to greenish or yellow, 7-13*5 z 3-4*5 jx* On Rubus par v i floras Nutt*, U.B.C, (H-1973); Rumez Acetosella L*, Lumby, (H-2311); Spiraea lucida Dougl,, Vernon (H-2309, Kersley, leg* G.E.Woolliams (H-1607)* 85© SphaereUa microsplla (B. 8s Br„) Cke, (Plate III, fig© 24) Perithecia scattered* globose, black, fragile, erumpent, 80-90 u diameter; asci oblong, fasciculate, sessile, 34-42 x 7©5 n; spores oblong-ellipsoid, uniseptate* hyaline, 705-11 x 3 p.» On Bpilobium angustifolium L©, U.B.C© (H-2093) • M» minor (Karst) Lindau (Plate III, fig.25) Perithecia innate, joined by subradiate, creeping brown mycelium, black, membranaceous* ostiole plane, 30-70 ji diameter; asci obovate, sessile, fasciculate, 18-25 x 12-14 n; spores conglobate, ovoid-oblong, uniseptate* sl i g h t l y constricted, hyaline to greenish, 8-12 x 3-4 u©. On Epilobium angustifolium L«, Vernon (H-2164)G> M© orbicularis (Pk©), House (Plate I I I , fig©26) Perithecia innate, black, membranaceous, amphigenous, globosej 100-120 u diameter; asci oblong, sessile, fasciculate, 36-54 x 7*5-9 u ; spores oblong* uniseptate, greenish, flattened on one side or slightly curved, biseriate, guttulate, 10-13©5 x 2-3 u© On Populus tremuloides Michx©, Saanichton (H-2012)© M© Pachystlmae Dear© (Plate III, fig©27) Perithecia on pjale grey or whitish spots, epiphylloUB, black, innate, globose;, 125-200 x 85-100 u ; some with radiating mycelium and a few s t i f f bristle_js near the apex; asci oblong, short stalked, (37-) 45-78 x 8-12 u; spores crowded biseriate, hyaline to greenish, uniseptate, somewhat constricted, often with-two oil-drops in each c e l l , 10-20 x 3-5 u© On l i v i n g leaves of Pachystima myrslnites Raf© f Hope (H-2115); this collection has smaller asci and spores than the species and may be a small form© 86o Mo perexigua (Karst.) Johans. (Plate I I I , fig.28) Perithecia black, membranaceous,, slightly erumpent, hypophyllous, smell, globose, 60-75 u diameter; asci obovate, unequal sided, sessile, fasciculate, 22-30 x 10-15 j i ; spores greenish, fasciculate i n the ascus, uniseptate, not constricted, fusoid-oblong, 15-18 x 2©5-3 n« On iiarex diandra Schrank., Vanderhoof, lego J.W.Eastham (H-2089)o Mo pinodes (B. & Blox.) B.E.Stone© Perithecia depressed, numerous, 100-140 ja diameter; asci oblong-cylindrical, 58-62 x 12 u; spores biseriate, oblong, uniseptate, hyaline, 14-16 x 5ya© On Pisum sativum L©, fiot seen (CPDS 1925) o M« Polygonorum (Crie) JJLind (Plate I I I , fig.29) Perithecia epiphyllous, on spots surrounded by a prominent, dark red border, black, membranaceous, globose-conical, 120-150 diameter, erumpent, papillate; asci obclavate-oblong, sessile, fasciculate, 30-36 x 15-17 u; spores greenish, e l l i p s o i d , ends obtuse, uniseptate, not constricted, crowded, 12-18 x «.5-6 u© On Brlogonum heracleoides Nutt., Ashnola T r a i l (H-2143). Mo populifolia (Cke.) House (Plate I I I , fig©30) Perithecia mostly hypo-phyllous, Innate-prominent, punctiform, globose, black, gregarious, mem-branaceous, 120-200 u diameter; asci cylindrical-clavate, fasciculate, sessile or short stalked, 42-75 x 7.5-15 u; spores sublanceolate, uni-septate, hyaline (to greenish, not constricted, straight or sli g h t l y curved, 15-18 (-27) x 3-4.5 yi© On Populus deltoldes Marsh., leg. and det© J.E.Bier (H-2142, V-881); P. trlchocarpa T.& G©, Vernon (H-2283). t 87. Mo punctlformls (Pers.) Schroet* (Plate III, fig.31) Perithecia innate-punctiform, smooth, subshining, black, prominent, perforated above, 60-120 yu diameter; asci oblong, subsessile, attenuated below, 27-45 z 6o5-9 u; spores biseriate or obliquely uniseriate, obovate-oblong, uniseptate,'con-stricted at the septum, hyaline to greenish, upper c e l l broader, 6-12 z 2-4 u.. On Acer maorophyllnm Pursfa., U.B.C. (H-1958, H-1954), Sliver Creek (H-1946); Alnus oregona Nutt,, U.B.C. (H-1959). M. punctifoimiB (Pers*) Schroeto varo Clematldis Jaap (Plate III, fig.32) Perithecia globose, 100-125 u diameter, thickly scattered, ostiole stout papillate; asci clavate, fasciculate, 25-43 z 7-10yu; spores biseriate, fusoid-ellipsoid, one end sometimes more rounded, uniseptate, hyaline, scarcely constricted, 8-16 z 2-3.5 u* On Arabis hirsuta (L.) Scop., var* glabrata, Crawford Bay, leg. H.Murray (H-2320); Arenarla capillaxis, var. nardifolia, Fish Lake, leg. J.B.Anderson (H-2303); Cirsium lanceolatum (L.) Scop*, Vancouver Island, leg. J.Macoun (OM-926); CirsAum sp*, Saanichton (H-1969, H-2516); Brigeron sp., Saanichton (H-2315); Heuchera glabra Willdo, Hudson Bay Mt., Smithers, leg© J.W.Eastham (H-1880); Senecio paupercuius Michx., Golden, leg. J.W.Eastham (H-2299)« Sphaerella p u s i l l a Awd© (Plate III, figo33) Perithecia epiphyllous, immersed, globose, 60-75 u diameter, ostiole plane; asci ovate-oblong, sessile, fasciculate, 30-40 z 10-15 u; spores crowded, oblong-fusoid, greenish-hyaline, uniseptate, slightly constricted at the septum, with three or four oil-drops, (16^)22-24 z 3-4 u. On Carez flava L», Shawnigan Lake,.leg. W.M. Canby (H-2308). 88. M. Ranunculi (Karst.) J.L ind (Plate III, fig.34) Perithecia black, coriaceous-membranaceous, single or grouped, erumpent, conical-globose, short papillate, 1 £0-200/i diameter; asei obclavate, very short stalked, inequilateral, fasciculate, 84-99 x 21-24 u; spores greenish, elongate-fusoid, uniseptate, scarcely constricted at the septum, biseriate, crowded below, 27-33 x 6-7.5 ji* On Banunculus Bschscholtzil Schlecht, Garibaldi, leg. J.Davidson (H-2293). M. roslcola (Pass.) Davis. Perithecia amphigenous, erumpent, black, single, 65-105 jx diameter; asci sessile, clavate, walls sl i g h t l y thickened toward the apex, 36-57 x 9-11 ji; spores biseriate or subbiseriate, unequally two-celled with the smaller c e l l toward the apex of the ascus, not con-stricted, slightly curved on one side, flattened on the other, rounded on the ends, olivaceous, 13-17 x 4-5.3 On Rosa centifolia L. var© muscosa Ser., Pat r i c i a Bay, not seen (CPDS 1942)© M. rubl Roark. Perithecia mainly hypophyllous, usually gregarious, erum-pent, globose, 60-80/1 diameter, ostiole short papillate, black; asci sub clavate to cylindrical, very short stalked, 42-45 x 8-10 ji; ascospores hyaline, slender fusiform, uniseptate, straight or slightly curved, very slightly constricted, (17-) 20-25 (-28) x 3.5-4.25 u, usually irregularly biseriate. The conidial stage, Septorla Rubl West, i s of common occur-rence , but the perithecial stage has not been collected. On Rubus spp., Blackberry, boysenberry, raspberry, youngberry (CPDS 1931, 1932, 1933, 1934, 1937, 1940, 1948). M. sagedioides (Winte) Lindau (Plate III, fig.35) Perithecia i n groups, 89. immersed, then erumpent, globose, membranaceous, black, 65-110 jx diameter; asci oblong-obclavate, sessile, 30-35 z 9-14 p.; spores crowded, hyaline to greenish, oblong-clavate, often unequal sided, both ends blunt, uni-septate, lower c e l l narrower, with four oil-drops, 10-14 z 3o5-4.5 0 1 1 Douglaaii Lo, Saanichton (E-2318). Mo atromatoldea Dear* (Plate III, f i g . 36) Perithecia grouped on numerous, scattered, small, circular, dark-bordered spots which are surrounded by a diffuse red band; innate, crowded at the middle of the spot, subglobose, epiphyllous, 85-180 jx diameter; asci aparaphysate, fasciculate, oblong-clavate, Gften curved> with a short foot, 45-70 z 12-15 j i ; spores biser-iate, hyaline to yellowish, uniseptate, scarcely constricted, upper c e l l wider and larger, suboblong, 12-18 (-20) z 5-7 (-9) ya. Most of the collections noted here show asei and spores somewhat larger than in Dearness* description, but otherwise f i t well* On l i v i n g leaves of Rumez obtusifolius L., Lake of the Woods, Hope (H-2108), Cowichan Bay (H-2147); R. occidentalis Wats*, Agassiz, leg. H.H.Ross (H-2103); Rumez sp., Abbotsford, leg. B.Lawson (H-2102), Langlie Prairie, l e g . B.Lawson (H-2100). Mo Tasaiana (de Hot*) Johans* (Mo pachyasca (Rostr.) Testerg*) (Plate I II, f i g s . 37 , 38, Plate 71, fig*39).* Perithecia small, 70-150 (-200) p. diameter, globose, becoming pyriform, ostiole conical, stout, widely scattered, densely crowded or confluent, immersed becoming erumpent; asci aparaphysate, broadly saccate below, constricted into a narrower cylindrical tip with a much thickened wall, often stretching at maturity to become clavate or cylindrical, 27-97 z 12-27 (-30) U|, fasciculate; spores narrow-fusoid becoming broader clavate or wedge-shaped, uniseptate, sli g h t l y or not constricted*: 90* upper c e l l broader and rounded, lower c e l l narrower and tapered, hyaline to greenish, often with two guttules i n each c e l l , 14-28,5 (-30) z 3©5-8.5 (-9) This i s a collective species with many synonyms, reported on many hosts under many binomials© It i s the most wide-spread species i n British Columbia, found on stems from nearly every collection, and very common on arctic-alpine collections© Following the usage of Lind (1929) and Wehmeyer (1946) this name i s used to include a l l collections showing the typical ascus shape and within the size ranges given aboweo On Achillea bore a l l s Bong,, Cathedral Lakes (H-2277)} A, Millefolium L,, Lake of the Woods, Hope (H-2284)j Agoseris graoilens (Gray) Greene, Cath-edral Lakes (H-2159); Agropyron latiglume (Seribn, & Sm,) Rydb,, Wall Lake, leg, T.M.C.Taylor (H-2193); A, spioatum (Fursh,) Rydb.,Fairmont Hot Springs, leg© J.W.Eastham (H-2060); Agrostis hiemalls (Walt©) B.S.P,, Goldstream Lake, leg© I,McT»Gowau (H-2139J; A, stolonifera L,, Cathedral Lakes (H-2151* H-2160); Allium Cepa Lo, Duncan (H-2256), A© oernuum Roth©, Grand Forks, leg, G.E.Woolliams and J.W.Eastham (H*»1664), Chilcotin, leg© E.W.Tisdele (H-2248); A. Sehoenoprasum L. var© sibiricum (L.) Hartm©, Klnbasket, Big Bend Highway, leg, J.W.Eastham (H-2247), Nakusp, leg© J.W.Eastham (H-2246); Auaphalis margaritacea (L.) B.& H«, Mt© Caven, Flag-stone, leg© F.B.Peterson (H-2303); Andropogon aooparius Michz©., Fainaont Hot Springs, leg, J.W.Eastham (H-2267); Anemone Drummondli Wats©, Cathedral Lakes (H-2158); A, globosa Nutt©, between Redstone and Chelquoit Lake, leg. J.W.Eastham (H-2128),} Ao multifida a f f i n i s hudsoniana, Bennett, leg© B.Boivin (H-2129); Antennarla media Greene, Cathedral Lakes (H-2290); A»  rosea Greene;, St .Mary's Lake, Kimberley, leg© J.W.Eastham (H-2014); Aplopappus Brandsge1 Gray, Cathedral Lakes (H-1957); Aquilegia brevistyla Chilcko River, leg© WA.Newcombe (H-2863); A© foimosa Fisch©, Duncan (H-2182); 91. Arabia caneacens Nutt.. Summerland* leg. G.E.Woolliams (H-l683); A* Drum*  mondii Gray, Mt. Apex, Penticton, leg. J.W.Eastham (H-2055); A. hirauta (L.) Scop, var* glabrata, Crawford Bay, leg. H*Murray (H-2320), A* L y a l l i l S.Wats., Cathedral Lakes (H-2154)j Acetagrostis latifolia,(R.Br.) Grlseb., Telegraph Creek Di s t r i c t , leg. W.H.Mathews . (H-2023.); Arenaria capillaxis Poir., Mt. Apex, Penticton, leg. J.W.Eastham (H-2301); A. capillar i s Poir. var. var. nardifolia, Fish Lake, leg. J.R.Anderson (H-2302; A* formosa Fisch., St.Mary's Prairie, l e g . J.W.Eastham (H-2023,; A. verna L. var. prop in qua Fern., Mt. Gheam, leg . J.K.Henry (H-2217); Arnica l a t i f o l i a Bong., Cathedral Lakes (H-l972); Artemisia vulgaris L.yar. discolor (Dougl.) Peek, Cathedral Lakes (H-2152); Aster conspicuus L i n d l . , Salmon Arm (H-2289); Astragalus  campeatria, Armstrong, le g . E.Wilson (H-2285); A. glareosus Dougl., Kale den, leg. E.Milley (H-2249I; A. Macounii Rydb., cathedral Lakes (H-2007); Balsam- orrhiza sp., Vernon (H-2168); Brassica sp., Duncan (H-2257); Bromus porter! (Coult.) Nash, McDonald1 s Landing, Francois Lake, leg. J.W.Eastham (H-2191); CalamagroBtis canadensis (Michx.) Beau v., Ootsa Lake, l e g . J.W.Eastham (H-20S1); C.inexpansa Gray, Columbia Valley north of Kimberley, leg. J.W. Ea8tham (H-2192); C. negleeta (Ehrh.) Gaertn., Ootsa Lake, leg. J.W.Eastham (H-2042); C. purpurascens R.Br., Chasm, Clinton, leg. J.W.Eastham (Hs-2087); C. rubescens Buck!., Cariboo Highway, leg. J.WiEastham (H-*2086), C* Suksdorfli (Link) Trin., Beaver Lake, leg. A.H.Hutchinson (H-2190); Campanula ?Media L», Duncan (H-1996); Campanula sp., Duncan (H-2330); Car ex albonigra Mack., Garibaldi, leg . J.W.Eastham (H-2122); C. engarae Steud., Mt. Apex, Penticton, leg., J.W.Eastham (H-2121); C» strata L., Mt. McLean, leg. R.Glendenning tH-2120); C, atratiformis B r i t . , Garibaldi, l e g . J.Davidson (H-2054); C. aurea Nutt., McDonald's Landing, Francois Lake, leg. J.W.Eastham (H-2119); 92. Co flavaLo, Yoho National Park, l e g . W.C.McCalla (H-2307); Go phaeocephala Piper, Sage Pass, lego T.M.C.Taylor (H-2196); C.praegracilis Boott., Wheeler Mt,, Kamloops, l e g . E.W.Tisdale (H-2197); C. pyrenaica Wahl., Mt. Brent, Penticton, leg. J.W.Eastham (H-2056); Cas t l l l e j a miniata Dougl., Cathedral Lakes (H-2163); Cas t i l l e j a sp., Shu swap Palls, Lumby (H-2165); Centaurea Jacea, U.B.C. (H-2176); Che i ran thus sp,, Duncan (H-2178, H-21Q4)» Chrysanthemum SP,. cultivated, Duncan (H-2173); Gichorium Intyhus L., Salmon Arm (H-2259); Oiraium arvense (L.) Scop., Princeton (H-2110, H-21L1); C. Hookerianum Nutt., Cathedral Lakes (H-2150); Crepis atribarba Heller, Cranbrook, leg. J.W.Eastham (H-2206); Cucftrblta Tmaxima, Duche, Duneah (H-2175$; Danthonia californica Boland var. americana (scribe) H i t c h c , Cowlchan Lake, leg. J.W.Eastham (H-2189); Delphinium sp., Duncan (H-2105); Deschampaia atropurpursa (Wahl.) Scheele, Garibaldi, l e g . J.W.Eastham (H-2040); D. elongata (Hook.) Munro ex Benth., Wall Lake, leg. T.M.C.Taylor (H-2188); Draba alpina L.» Garibaldi, lege J,Davidson (H-2294); P. incerta Pays©., Coquihalla, leg. F.Perry (H-2137); D. Paysonii Maobre, Cathedral Lakes (H-2157); D. praealta Greene, Mt. Waddington, leg. W.Taylor (H*»2266); P. atenoloba Ledeb., Mt. Brent, Penticton, le g . J.W.Eastham (H&2019); Elymua innovatus Bealo, Vanderhoof, leg. J.W.Eastham (H-2038)4 Kechika River, leg. N.C.Stewart (H-2039); Erigeron l i n e a r i s (Hook.) Piper,. Tranquille, leg. T.M.C.Taylpr (H-1990); E. pumilus subsp. lntermedius, Tobacco Plains, l e g . J.W.Eastham (H-2213) j E. speciosus DC.var© typicus Cronqu., Vernon (H-2064); Erigeron sp., Vernon (H-2288); Festuoa attaioa Trin,, Telegraph Creek D i s t r i c t , l e g . W.H.Mathews (H-2002); F. ovina L», Mt. Pope, Fort St. James, le g . J.W.Eastham (H-2185); g.ovina L. var. brachyphylla (Schult.) Piper, McBride, leg. J.W.Eastham (E-2296); F©_ 93. pacifica Piper, Cowichan Lake, leg. J.W.Eastham (H-2184); F. rubra L.,. Hudson Bay Mt., Saithers, leg . J.W.Eastham (H-2183); Gaillardia arlstate Pursh., Vernon (H-2312), Gray Creek, Kootengy Lakes, l e g . J.W.Eastham (H-2214); Geranium erianthum DC, Mile 27 on Yukon«White Pass Railway, leg. J.M.Gillett and D.A.Mitchell (H-2194); Hieracium aurantiacum L., U.B.C. (H-2282); H. gracile Hook., Cathedral Lakes (H-2145); Hlerochloe alpina (Swartz») Roam., McBride, leg. J.W.Eastham (H-2240); Hoborealis Roam. & Schult., A t l i n Lake, lego E.S.Wilkinson (H-2239); Ho odorata (L.) Beauv*, Coal Creek, Fernie, l e g . J.W.Eastham (H-2238); Hydrangea spo, Duncan (E-2180); I r i s germanica Lo, Duncan (H-l993); Juncus Drummondll Meyer, Mt. Apex, Penticton, leg. J.W.Eastham (H-1989); Koeleria cristata (L.) Pers*, Mc-Donald's Landing, Francois Lake, leg. J.W.Eastham (H-2237)^ Mt. Pope, Fort St. James, lego J.W.Eastham (H-2236), Mt. Brent, Penticton, lego J.W.Eastham (H-2082), Cariboo Road, leg. E.Wilson (H-2085); Lathyrus odoratus L., Duncan (H*2181); Linum Lewi s i i Pursh., Windermere, leg. J.W.Eastham (H-2219); Lomatlum ambiguum (Nutt.) C.& R., Cathedral Lakes (H-2280); Lupinus l a t i f o l i u a var* subalplnus (Piper and Robins.) CP.Sm., Cathedral Lakes, (H-2051); Lo L y a l l i i Gray, Cathedral Lakes (H-2272); L* sericeus Pursh., Vernon (H-2107); Lupinus sp., Vancouver Island, leg. J.Macoun (OM-^916), Cathedral Lakes (H*2162), U.B.C (H&1995); Luzula Piperl (Cov.) M.E.Jones, Garibaldi, l e g . J.W.Eastham (H-l987); Lo spicata (L.) DC, Dunn Peak, Chua Chua, legs E.W.Tisdale (H-2124); Lychnis Coronarla Dear., U.B.C (H-2179); LycopETslcum esculentum M i l l * , Duncan (H-2172); Monardl  mollis L., Vernon (H-2167); Oenothera biennis L., U.B.C (H-l992), Duncan (H-l994); Oryzopsis asperlfolla Michx., Fairmont Hot Springs, leg. J.W. Eastham (H-2235); 0. hymenoldes (R.& S.) Bicker, Penticton, leg. J.W. 94. Eastham (H-2234) j 0. pun gens (Torr.) H i t c h c , McDonald'3 Landing, Francois Lake, leg. J.W.Eastham (H-2227); Panicum Occidentale Scrib., Gray Creek, Kootenay Lake, l e g . J.W.Eastham (H-2065); Pedicular i s bracteosa Benth., Cathedral Lakes (H~2036); Po paddoensis Pennel, Mt. McLean, lego S.J. Yamanaka (H-2200); Penstemon ovatus Dougl., Cathedral Lakes (H-2153) j Phacella leucophylla Torr., Vernon (H-1940); Phleum alplnum L., Anahin Lake, Chilcoten, leg. C.F.Cornwall (H-2049, H-2156); Cathedral Lakes (H-2G09); Garibaldi, leg. J.W.Eastham (H-2232); Phlox diffusa Benth., Mt. Copley, leg. D.Elvidge (H-2133); P. Douglasli Hook., Forbidden Plateau, Vancouver Island, leg. J.Bostock (H-2131); Poa alpina L., Hudson Bay Mt., Smithers, leg. J.W.Eastham (H-2231), Wall Lake, leg . T . M S C .Taylor (H-2250); p. arctlca R.Br., McBride, l e g . J.7/.Eastham (H-2229); P. compressa L«, Flying U Ranch, Cariboo, l e g . J.W.Eastham (H-2084); P. conf Ini s Vasey, Saanich Spit, lege J.W.Eastham (H-2228); P. glauoa Vahl, Mount Rowe, leg. T.M.C.Taylor (H-2079); P. interior Rydb., McDonald's Landing, Francois Lake, leg. J.W.Eastham (H*2035); P. lettermanni Vasey, Mount Rowe, leg . T.M.C.Taylor (H-2233); P. nervosa (Hook.) Vasey, Ootsa Lake, leg. J.W.Eastham (H-2048), Hudson Bay Mt., Smithers, l e g . J.W.Eastham (H-2226); P. paucisplcula Scribn e & Murr., summit between Francois and Ootsa Lakes, leg. J.W.Eastham, (H-2006); P. pratensis L.« Kootenay Crossing, l e g . I .MoT •Cowan (H-2225) f Kamloops, leg. E.W.Tisdale (H-2224); P. secunda Pre s i . . Old Forestry Lookout, Ootsa Lake, leg. J.W. Eastham (H-2005); P. stenantha Trin., Lake Garibaldi, leg. J.W.Eastham (H-2077); Polemonium californlcum Eastw., Mt. Brent, Penticton, l e g . J.W. Eastham (H-2134); P. pulcherrimum Hook., Tobacco Plains, l e g . J.W.Eastham (H-2328), Penticton-Merritt Highway, le g . J.W.Eastham (H-2327), Skwa-ach Mt., leg. J.Davidson (H-2326); Potent i l i a diversi f o l i a Lehm., Kennco Mining Camp, leg. G.A.Noel (H-2003), Mount Monarch, A t l i n D i s t r i c t , leg. W.A.Sfcbchell 95o (H-1998); P. f l a b e l l l f o l i a Hook., Cathedral Lakes (H-1999); P. N u t t a l l l i Lehm., Marysville, lege J.W.Eastham (H-2125); P. palustris (L.) Scop., Nelson, leg. G.E.Woolliams and J.W.Eastham (H-1666); Pncclnellia Nuttalllana (Schult.) Hitchc., Doyle, south of Wasa, le g . J.W.Eastham (H-2004); Ruraex Acetosella La, U.B.C. (H-2008); Sanicula erasaicaul i s Poepp., Vancouver Island, leg. J.Macoun (GM unnumbered, July 17, 1916); Schlzachne purpur- ascens (Torr.) Swallen, Prince George, leg. J.W.Eastham (H-2223); Sedum  stenopetalum Pursh., Cathedral Lakes (H-2155); Senecio integerrimus Nuttp, Cathedral Lakes (H-2145); Silene Douglasii Hook., Grand Forks, l e g . G.L. Landon (H-2218); Sisyrinchium angustifolium Mi l l e r , east of Fernie, l e g . J.W.Eastham (H-2252), McGillivray, Crowsnest Pass, leg . J.W.Eastham (H-2251), Canal Flats, leg. J.W.Eastham (H-2250); Sit anion hystrlx (Nutt.) J.G.Smith, Redstone, l e g . J.W.Eastham (H-2161); Solidago multlradlata A i t . , Bennett, leg. D.A.Mitchell (H-2203)'; Sphenopholls obtusata (Michx.) Scrib., Fairmont, leg. J.W.Eastham (H*2045); Spiraea lucida Dougl., summit Rossland Highway, leg. G.E.Woolliams and J.W.Eastham (H-2325); S t s l l a r i a longipes Goldie§ Cathedral Lakes (H-2313); Stenanthium oceidentale Gray, Mt. Stephen, Field, leg. J.M.Fogg (H-2323); Stipa columbiana Macoun, McDonald's Landing, Fran-cois Lake, leg . J.W.Eastham (H-2221); S. comata Trin* & Rupr., Dewdrop Flat, l e g . V.C.Brink (H-2026); S. Richardsonl Link, McDonald's Land, Francois Lake* leg. J.W.Eastham (H-2220); Symphorlcarpua albus (L.) Blake, Salmon Arm (H<*2109); Tanecetum vulgare L., U.B.C. (H-2171); Tofieldia glutinosa (Mt.) Pars., Canal Flats, leg. H.Murray (H-2097), Garibaldi, leg. W.Cottle (H-2195), Field, l e g . J.W .Eastham (H-2243), Coldstream Creek, Windermere, leg. J.W.Eastham (H-2244); Trisetum apicatum (L.) Richt 0, Hudson Bay Mt., Smithere, leg. J.W.Eastham (E-2076); Zea Mays L., Duncan (H-2174); Zygadenus elegans (Pursh.) Rydb., 96, Fairmont Hot Springs, lege T.M.C.Taylor (H-2241), Wall Lake, leg. T.M.C. Taylor (H-2242); Liliaceae indet., Duncan (K-2295); herbaceous stalks, Penticton (H-2281), Duncan (H-2255); Gramineae indet., Kamloops, leg. J.Macoun (OM-154), Duncan (H-2044); dead wood, Allison Pass (H-2H6)© M. Typhae (Laseh.) Lindau (Plate III, fig.39) Perithecia amphigenous, black, membranaceous, globose, 45-80 p. diameter; asci fasciculate, sessile, obclavate, 36-40 x 10-15 a; spores greenish, uniseptate, four guttulate, narrow-ellipsoid, upper c e l l s l i g h t l y wider, 11-15 x 3-405 pa On Typha  l a t l f o l i a L., Stanley Park, Vancouver (H-2062). Sphaerella vagans E l l a & Ev. (Plate III, fig.40) Perithecia scattered, erumpent, becoming superficial, globose, black, membranaceous (50-) 250-300 diameter; asci fasciculate,oblong-obclavate, sessile, 30-60 x 7-9 n; spores biseriate, ovate-oblong, uniseptate, sl i g h t l y constricted at the septum, hyaline to greenish, 12-16 x 4-7 u. On leaves of Valeriana sltchensls Bong., Cathedral Lakes (H-2275)» M.Wichuriana (Schroet.) Johens. (Plate III, fig.41) Perithecia gregarious, innate, globose, 50-65 ji diameter, membranaceous; asci ovoid, sessile, fasciculate, 22-26 x 14-16 j i | spores conglobate, fusoid,uniseptate, not constricted, hyaline, 11 -13 x 3-3.5 jx» On Carex flava L., Yoho National Park, leg. W.CMcCalla (H-2307); C. praegracilis Boott., Flying U Ranch, Cariboo, leg. J.W.Eastham (H-2298); Carex sp., Soda Creek, leg. J.Bancroft, (H-2166); Festuea idahoensis Elmer, Elko,leg. J.W.Eastham (H-2297); Luzula  Wahlenbergli Rup., McBride, l e g . J.W.Eastham (H-2123); Oryzopsis pungens (Torr.) H i t c h c , McDonald's Landing, Francois Lake, l e g . J.W.Eastham (H-2227); Poa ampla Merr., Junction Elk and Kootenay Rivers, l e g . J.W. 97 0 Eastham (H*2080); P*interior iftydb*, McDonald's Landing, Francois Lake, leg* J.W.Eastham (H-2035)* Mycosphaerella sp* The five collections noted below have not been deter-mined satisfactorily to species* Short descriptions are given for each* On Salix saximontana Rydb*, Cathedral Lakes (H-2268)j (Plate III, fig.42): Perithecia minute, black, membranaceous, erumpent, hypophyllous, globose, 60 jx diameter; asci sessile, fasciculate, obovate, 22 x 36 ii; spores greenish, uniseptate, not constricted, lower c e l l narrower, granular, 15-17 x 6-7.5 yi* On Ssmbucus sp., Soda Creek, leg* J.Bancroft (H-2335) (Plate I I I , fig.43): Perithecia black, membranaceous, erumpent, globose-conical, 60-75 jx diam-eter; some brown mycelium connecting perithecia; asci sessile, fasciculate, ovate-oblong,. 33-39 x 15-18 yi; spores hyaline, granular, uniseptate, crowded in the ascus, 12-13.5 x 4.5yu. On Sanicula crassicaulis Poepp., Vancouver Island, leg* J .Macoun (CM un-numbered, July 17, 1916) (Plate III, f i g * 44): Perithecia brown to black, membranaceous, globose, ostiole short papillate, erumpent, 60-100 p. diameter; asci sessile, obclavate, fasciculate, 33-45 x 10.5-12 yi; spores greenish-hyaline, uniseptate, guttulate, upper c e l l broader, 12-15 x 3 jx* On Silene Douglasli Hook*, Cathedral Lakes (H-2329) (Plate III, fig.45): Perithecia black, shining, erumpent, coriaceous, papillate, globose, 230-260jx diameter; asci sessile, fasciculate, clavate, narrowed to both ends, 75-120 x 30-38 jx; spores greenish, uniseptate, sl i g h t l y constricted at the septum, upper c e l l broader, 28-36 x 9-11 ^ i * On cone scales of Thuja plicata D.Don*, Duncan (H-2278) (Plate III, fig.46)t Perithecia black, membranaceous, erumpent, glo^Sse, ostiole plane, 130-260 jx 98. diameter; acme with a fascicle of conidiophores at the apex, bearing brown apiculate, verrucose conidia; asci fasciculate, oticlavate, short stalked, 60-75 x 15-18 jx\ spores hyaline, straight or curved,uniseptate, not con-stricted, guttklate, 15-23 x 6-7.5 jx« Phaeosphaerella Karst. As Mycosphaerella, but spores brown. P. maculosa (Sacc.) Karst. (Plate III, fig.47) Perithecia amphigenous, imbedded i n leaf tissues, l a t e r erumpent, globose, black, ostiole minute, 60-200/1 diameter; asci sessile, elongate, inflated at the base, apara-physate, eight- (often two- to six£) spored, 60-95 x 11-18 jx; spores uni-seriate above, biseriate below, broadly ovate-oblong, uniseptate, slightly constricted at the septum, f i r s t hyaline, becoming dull brown, 14-24/1 long, upper c e l l 9-10 jx broad, lower c e l l 7-8 jx broad. On leaves of Populus tremuloides Michx., Saanichton (H-2012). Pleoaphaerulina Pass. Perithecia immersed, globose to flattened; asci aparaphysate, eight-spored; spores oblong, several-septate, one or more of the c e l l s divided by a longitudinal septum, hyaline. P. oonatricta (Starb.) Sacc. (Plate I I I , fig.48) Perithecia scattered to gregarious, under the epidermis and raising i t in bumps, globose; asci sessile, aparaphysate, oblong, clavate, 50-60 x 13.5-15 ^ i ; spores oblong, greenish-hyaline, 3-5-septate, constricted at the middle septum, upper part shorter and broader, longitudinal septum in central c e l l s , (18-) 20-30 x 6-9 U s On stems of Rosa sp., Sidney, leg. J.Macoun (OM unnumbered, A p r i l , 1915)* 99 Pseudoplea v.Hohn. Perithecia Immersed, apices prominent, ostiole distinct, parenchym-atous; asci ovoid, eight-spored; spores elongated, h\yaline, muriformo P. T r i f o l l i (Rostr.) Petrak (Sphaerulina T r i f o l i l Rostr., Pieosphaerulina  Brioaiana Pollaccl) (Plate III, fig.49) Perithecia on small circular spots, epiphyllous, brown, membranaceous, globose, 90-120p diameter; asci broadly ovate, sessile, aparaphysate, 50-75 x 27-42 p, eight-spored; spores hyaline, oblong, 3-septate, constricted at the middle septum, granular, with one or more cells containing a longitudinal sapturn, 24-33 x 12-15 p» On leaves of Medicago sativa L., U.B .C, leg. W.Jones (H-2025). Rehmlellopsla Bubak & Kabat Stromata lacking; perithecia subepidermal, immersed, globose-conical, ostiole erumpent, coriaceous, brown-black; asci 10-24-spored, fuaoid to clavate, short stalked, aparaphysate; spores e l l i p s o i d to oblong, unisep-tate, ends rounded, hyaline. Ro abietis (E.Rostr.) O.Rostr. Perithecia amphigenous, subepidermal be-coming erumpent, single, globose, papillate, 150-200 p diameter; asci clavate to cylindrical, short-stalked, thick-walled, fasciculate, apara-physate, many-spored (16-24), 50-90 x 20-22 yi; spores e l l i p s o i d , irregular, hyaline, 11-21 x 4-6.7p, one-septate, not constricted, granular. On l i v i n g leaves of Abies lasiocarpa (Hook.) Nutt., in Br i t i s h Columbia, not seen (Waterman 194531 327; CPDS 1945) • Sphaerulina Sacc. Perithecia immersed, l a t t e r somewhat erumpent, small, globose, or lenticular, black, membranaceous, ostiole plane or short papillate; asci 100. fasciculate, eight-spored, aparaphysate; spores elongate, rounded or pointed, with several cross walls, hyalines Spores large., 45-54 x 14-18^1. •••••• ».....«.«»>«S« Gentianae Spores smaller, 18-22.5 X 7-9 u .«.».,....»......S» Alni zm? minor S& Alni A.Lorr.Smith foxma minor fm.nov. (Plate III, fig.50) Perithecia immersed, black, coriaceous, depressed-globose, 600-700 X 450-500 JXT ostiole erumpent, curved, 300-350 X 100-150 JX; asci broad-ellipsoid, narrowed at the base to a delicate slender stalk and at the apex rounded-truncate, thin-welled, thiekened at the apex, at maturity distorted around the spores, 48-66 x 18-24~JX; spores hyaline, three-septate, not constricted at the septa, irregularly biseriate, e l l i p s o i d to ovate, straight or slightly curved, multiguttulate, 18-22.5 x 7-9 u. Differing from the species i n the smaller spores. On petioles of Alnus oregona Nutt.,, Stanley Park, Vancouver (H-1953)c S. A l n i A.Lorr.Smith forma minor fm. nov. A typo d i f f e r t sporis paullo brevioribus, nempe 18-22.5 x 7-9 ^ x, nec 22-30 x 8 jxe Specimen typicum in University of Bri t i s h Columbia herbario conservatum, in p e t i o l i s A l n i oregonis Nutt,, prope locum dictum "Stanley Park, 760100x1*0^ in British Columbia, l e g i t M.E.Barr (H-1953), March 29, 1952* S. Gentianae Wehm. (1946i 166) (Plate III, f i g . 51, Plate VI, fi g e40)» Perithecia formed beneath the epidermis* erumpent, superficial, globose to conical, 400-500 p. diameter, ostiole abort papillate, wall thick, collapsing irregularly with age; asei cylindric-clavate, walls thick, 150-270 x 32-39 (-54) ^u; spores hyaline, irregularly biseriate, e l l i p s o i d , 3-septate, slightly constrioted at the septa, granular, guttulate, contained i n an 101a . evanescent gelatinous envelope, 45-54 x 14-18 jx» On Gentiana oalycosa Griseb., Wall Lake, 6000», leg. T.M.C.Taylor (H-1933)0 This collection shows a few paraphyses; i t could well be a Massarinao 17. Pleosporaceae Perithecia separate, immersed, later more or less free, always with the short papillate or conical ostiole erumpent; membranaceous-coriaceous, smooth or tomentose or b r i s t l y ; asci clavate or cy l i n d r i c a l , eight- to many-spored; paraphyses or interthecial tissues present; spores various, one- to many-celled, muriform or f i l i f o r m , hyaline to dark-colored* Spores one-celled, hyaline* Asci cylindrical ,.... .Phomatospora Asci clavate o«... ....................o......Physalospora Spores more than one-celled, hyaline or dark colored. Spores two-celled© Psrithecia smooth. Spores hyaline* Spores divided into two very unequal cells .Aplosporella Spores diivid©;d into two nearly equal c e l l s * Paraphyses present....*.................©Didymella Perithecia spiny or hairy* Spore s hyaline ©.«.«••.•••»•«•••••.»••.»•o••.a.......Venturia Spores brown Protoventuria Paraphyses absent Didymellina Spores brown© Didymosphaeri a 102« Spores more than two-celled© Spores with transverse walls only© Spores f i l i f o r m . .Ophiobolua Spores not filiform© Spores hyaline.......»...©................0Metasphaeria Spores brown.............................©Leptosphaerla Spores murifona© Asci eight-spored (sometimes less) ©.....©..........©Pleospora Asci sizteen-spored..• ...Capronia Aplosporella v. Hohn. Perithecia immersed, then erumpent, globose; membranaceous, dark brown to black, ostiole short; asci eight-spored, elavate-cylindricel; paraphyses present; spores elongate, clavate-pyriform, smaller below, uni-septate , hyaline. (Differs from Apiospora i n lacking stroma). A. alplna Wehm. (1946:148) (Plate III* fig©52) Perithecia thickly scattered, erumpeht-superficial, shiny black, flattened-spherical, 250-350 z 200-250 ji\ walls thick; asci cylindrical-clavate, wall thickened at apez, 75-120 z 10-13 u ; paraphyses slender, longer than asci; spores biseriate, e l l i p s o i d to inequilateral, narrowed toward lower end, septum irregularly placed near this end, hyaline, 16-23 z 5-7 j i , guttulate© On Pedlcularis bracteosa Benth©, Cathedral Lakes (H-2036)© lehmeyer in his description states that no paraphyses nor paraphysis-like structures were seen; i n this collection they are diatinctly evident© Capronia Sacc© Perithecia erumpent, almost superficial, globose, ostiole papillate, 105, beset with s t i f f , straight, dark bristles; asci sixteen-spored, elongate, short stalked; spores fusiform or oblong, muriform, hyaline to brown; paraphyses lacking© »Ca pleiospora (Mout©) Sacc© (Plate III, fig©53, Plate 71, fig©41) Pe r i -thecia globose, setose, coriaceous-carbonaceous, 180 p diameter; asci obovate, sessile, sixteen-spored, aparaphysate, 45-70 x 15-21 p; spores yellow- to grey-brown, three-septate, one or more longitudinal septa, ell i p s o i d , crowded i n the ascus, 11-15 x 5-7 u© On bark of Prunus demlssa (Nutt©) D.Dietr©, Stanley Park, Tancouver (B>1956)» Didymella Sacc© Perithecia immersed, ostiole erumpent, globose, membranaceous, black, smooth; asci cylindrical to clavate, eight-spored; spores e l l i p s o i d or ovate, two-celled, hyaline; paraphyses present© Spores small, 6-8 u long©©..©....«•©•••••••.......©........, ..Do Rauii Spores larger, over 12 u long© Spores uniseriate in the ascus, 9-llu broad >D» fenestrans Spores biseriate, not over 8 u broad© Spores with ends acute© «.©D. Delphinil Spares with ends blunt and rounded© On Trifolium D© T r l f f r l i i On Rubus. D« applanata D« applanata (Niessl©) Sacc© (Plate III, fig.54) Perithecia gregarious, submembranaceous, obscurely papillate, subglobose or depressed, immersed, becoming superficial when the epidermis f a l l s away, black; asci cylindrical 104. to clavate, subsessile, paraphysate, (45-) 60-75 x 10-15'yi; spores biser-iate, obovate to oblong, uniseptate, hyaline, constricted at the septum, upper c e l l broader, 12-18 (-21) x 4»5-6 (r7.5) ji. On stems of Rubus parviflorus Nutt., U.B.C. (H-l973)j Rubu3 sppf, raspberry, Duncan (H-2022), (CPDS 1936, 1937), loganberry (CPDS 1931, 1932, 1934). D. Delphinil Barle (Plate III, fig.55) Perithecia abundantly scattered, immersed, la t e r p a r t i a l l y exposed, black, short papillate, subglobose, 250-300 fi diameter; asci clavate, short stalked, paraphyscuhft, 80-90 (-105) x 12-15 u ; spores biseriate, hyaline, subellipsoid, unequally uniseptate, ends, subacute, 18-25 x 6.5-8 fio On Arnica l a t i f o l i a Bong., Cathedral Lakes (H-1972). P. fenestrans (Duby) Wint. (Plate IT, f i g . l ) Perithecia scattered or gregarious, Immersed, later erumpent, globose, becoming flattened^concave in age, membranaceous-coriaceous, black, ostiole cylindrical or conical, about 400 ji diameter; asci cylindrical, short stalked, 10§-150 x 10-15jx; paraphyses indistinct; spores hyaline, oblong-sllipsoid, unequal-sided, ends rounded, uniseptate, sli g h t l y constricted at the septum, 18-30 x 9-12 u» On stalks of Epilobium angustifolium L., U.B.C. (H-l947), Mount Seymour (H-2018). •D. Rauil (E11.& Eva) Sacc. (Plate 17,, fig.2) Perithecia scattered or two or three together, covered by the loosened.cuticle which i s pierced by the papillate ostioles, globose-depressed, 300-350 ji diameter; asci clavate, short-stalked, 35-45 x 4.5-7 ji; no paraphyses seen; spores biseriate, yellowish-hyaline, oblong-fu3iform, uniseptate, constricted at the septum, slig h t l y curved, 6-8 x 1.5-2^ia On stems of Rosa sp., Sidney, 105, leg. J.Macoun (OM unnumbered, April 1915)© Wenmeyer (1933: 265) says this species should be placed i n Gncmonia or Gnomonina© D. T r i f o l i l (Fckl.) Sacc. (Plate IV. fig.3) Perithecia gregarious, immersed, depressed-globose, ostiole papillate, erumpent, black, coria-ceous, 200 diameter; asci cyllndrlc-clavate, narrowed at the base, paraphysate, (60-) 80-100 x 10-12 jx; spores biseriate, becoming uniseriate, oblong, uniseptate, constricted at: the septum, hyaline, upper c e l l broader, 15-20 x 5-7 /io On stems of Trifolium sp©, Sidney, leg. J .Macoun (0M-370). Diaporthe exlguestrcma Dear., (Dearness 1917: 348), type collected on dead stems of Rosa sp., Vancouver Island, July 1916, John Macoun, 923, i s , according to Wehmeyer (1933: 252), a Didymella. No specimens were seen© Didymelllna v©Hohn© As Didymella, but destitute of paraphyses© D© macrospora Klebahn© Perithecia black, carbonaceous, immersed, beak erumpent, irregularly globose, 175-305 x 120-321 jx, well pseudoparenehym-atous; asdi few to many, fasciculate, ovate, fusiform, or clavate, short stalked or sessile, eight-spored, aparaphysate, 68-115 x 37-53jx; spores oral to e l l i p s o i d , two-celled, sl i g h t l y constricted at the septum, upper cel l somewhat larger, hyaline, 35-57 x 10-16 jx» On I r i s sp., not seen (CPDS 1930, 1931, 1932, 1933, 1934, 1935, 1936, 1937). Didymosphaerla Fckl. As Didymella, but spores brown© Spores large, not constricted at the septum, 16.5-21 jx lohg...D© oregonensis Spores smaller, constricted at the septum, 9-12jx long... ...D. Borgii 10 6o *D. ?Borgii Carnana-Gatto & Sacce (Plate IT, fig.5) Perithecia gregarious, erumpent through epidermis, globose, short papillate, 300-500 u diameter, black; asci cylindrical, short stalked, four- to eight-spored (68-) 75-84 x 7-8 i i , paraphysate; spores oblique* light-brown, one-septate, con* stricted at the septum, 9-12 x 6 u© On Stems of Rosa sp©, Saanichton (H-2024J; this collection f i t s the species description except for the occasional four-spored condition of the asci and the constriction at the septum of the spores* Do oregonensia Goodding© (Plata IT, fig.4) Perithecia black,membranaceous, globose, raising the epidermis of the branch, 400 ja diameter; asci clavate-cylindrical, very short stalked or sessile, eight-?spored, paraphysate, 75r 105 x 10o5-13o5 u; spores greyish-brown, biseriate or irregular, e l l i p s o i d , uniseptate, granular, guttulate, upper c e l l slightly broader, 16©5-21 x 6 ya© On Alnus oregona Nutto, Knight Inlet* legs I©Scaledel, det. D.C. Buckland (U-324); Sayward, lego and det 0 D.C.Buckland (TJ-413, tJ-665); Ao sitchensis Sarg., Clearwater, lego and det* D.C.Buckland (U-666)* Leptosphaeria Geso & de Not* Perithecia immersed in the substrate, becoming erumpent, globose to conical, coriaceous-membranaceous, brows or black, ostiole papillate or conical; asci clavate or cylindrical, becoming elongated at maturity, eight-spored; spores e l l i p s o i d to fusiform, transversely divided into three to many c e l l s , yellow to dark brown; paraphyses present (occasionally lacking©). Spores three- to four-septate© On Monocotyledons© 107. Spores elongate, 45-60 u long........• . . . . . J . . petkovicensis Spores shorter. Spores 9-11 jx wide.............................L. eplcarecta Spores up to 9 u wide. On Typha......................................Lo Typhae On other plants. On Carex. Spores 6-9 jx wide.o.o................L« L o l i i Spores 5-5o5 jx wide............... ».L« Apogon On other plants© Spores 17-27 jx long...............Lo culmorum Spores 15-18 j i long.. .........Lo eustoana On Dicotyledons. Spore s elongate, (30-) 36-42 jx l o n g * . . . . . . • .L. Silenes-acaulis Spores shorter. Spores 12-14wideoe,...*.. ...........L. Andromedae Spores narrower. Spores over 20 jx long.. Spores 4-septate .. ..................L. Califomica Spores 3-septate.... .L. jpratensls Spores not orer 20 long.. Asci 90-115 jx long..............o.oL. eonlothyrium Asci up to 80 u long. Spores 15-20 x 3-4.5 p...........L. dumetorum Spores 12-16 x 5 a.............L. Gaultheriae Spores more than four-septate. 108, Spores five-septate© Third c e l l of spore enlarged, on Monocotyledons....©»L© culmicola Second c e l l of spore enlarged* on Dicotyledons*........*L» Jtonora Spores six or more septate* On Monocotyledons. On Carex.....•».••••.•••»•» .......L* consobrina On other plants* On Typha*. ..L. typhi cola On Gramineae.......«.»...................©L© culmifraga On Dicotyledons*..•••••©.©•••.•©•••.•••.• •..............L» agnlta L. agnita (Daam.) Ges.. Ss de Not* (Plate IV, fig.6) Perithecia widely scattered, erumpent, globose or slightly depressed, 200-300 jx diameter, walls thick; asci short clavate, becoming elongate, base claw-like, 70-115 (-150) x 9-15p.; spores fasciculate, fusoid-cylindrieal, pale yellow-brown, 6-septate, constricted at the third septum which i s nearly central, third c e l l enlarged, tapering towards both ends, with droplets on each side of the septa, somewhat curved, (28-) 35-45;(-48) x 3.5-6 jx« On Erigeron  speciosus DC. var* macranthus (Nutt.) Gronq., Vernon (H-2064); Lupinus  l a t i f o l i u s Agho var. subalpinus (Piper & Robins©) C.P.Sm*, Cathedral Lakes (H-2051). L. An drome dae (Awd©) Sacc* (L. hyperborea (Fckl.) Berl* & Vogl©) (Plate IV, fig.7) Perithecia epiphyllous, black, innate, ovoid, 160 x 130 ji, ostiole erumpent; asci broadly clavate, sessile, 75-136 x 24-30 ji; spores biseriate* crowded, oblong, ends rounded, 3-septate, constricted at the central septum, hyaline f i n a l l y becoming brown, 27-34 x 12-14 yu© On Casslope sp., Garibaldi, leg. V.C.Brink (H-2050). This i s very near to Massaria. 109© »L. ?Apogon Sacc. & Speg. (Plate IV, fig.8) Perithecia sparse, globose, immersed, papillate, 150 jx diameter, membranaceous; asci oblong, sub-sessile, paraphysate, 45-60 x 9-13 u; spores biseriate, oblongrsubfusoid, 3-septate, s l i g h t l y constricted at the central septum, olivaceous, 28-27 x 3-5.5 . jx* On Carex diandra Schrank., Vanderhoff, l e g . J.W.Eastham (H-2089); C. Hoodii Bbott., Smithers, leg. J.W.Eastham (H-2090). This species f i t s the collections cited; the host differs. L. Celifornlca (Gke. & Hark.) Sacc. (Plate IV, fig.9) Perithecia gre-garious, immersed, black, f i n a l l y p a r t i a l l y erumpent, globose-conical, 250-300 jx diameter; asci clavate, stalked, 105-120 x 12-15 jx\ paraphysate; spores biseriate, sublanceolate, second c e l l swollen, 4-septate and slightly constricted at the septa, pale brown, 21-30 x 2.5-8 jXo On branches of Cytisus sp., Duncan (H^ -2037) . L. Oamelliae Cooke & Mass. Perithecia sparse, punctiform, on epiphyllous brown spots, papillate ostiole erumpent; asci subolavate, usually 4-spored, short stalked; spores biseriate, fusoid, curved, 3-septate, constricted, greenish, 25-27 x 5-6 jx* On Camellia sp., Saanichton, not seen ( C P D S 1952). ,L. ooniothyrium (Eckl.) Sacc. Perithecia single or gregarious, erumpent, depressed-globose, papillate; asci cylindrical, stalked, paraphysate, 90-115 x 7.5-9 jx; spores mostly uniseriate, oblong, typically 3-septate, some" what constricted, fuscous, 14.5^16 x 4-5jx. Oh Rubus sp., raspberry, not seen (CPDS 1928, 1931, 1932, 1933, 1934, 1936, 1937, 1938, 1939, 1940); Loganberry (CPDS 1931); blackberry (CPDS 1931). 110 Lo consobrina Karate (Plate IV*. fig.10) Peritheeia sparse to gregarious, immersed, spherical, ostiole papillate, erumpent, black; asci sessile, elongate-elavate, peraphysate, 72-120 x 10-22 j i ; spores biseriate above, uniseriate below, sli g h t l y curved, attenuated at the ends, 7-8-rseptate , constricted at the septa, greyish-brown, (27-) 36^ -50 x 4-8 ^ i . Oh Carex  aenea Fern., McBride, l e g . J.W.Eastham (H-2053); C. brunnescans (Pers.) Poir., Vanderhoof, leg. J.W.Eastham (H-2043). L. culmicola (Fr.) Awd. (Lo microscopica Karat.) (Plate 17, f i g . l l ) Perithecia scattered or subgregarious, immersed, ostiole papillate and erumpent, globose, 200-270^1 diameter; asci clavate j short-stalked, para** physate, 70-84 (-105) x 7.5-9 jx; spores fusoid, sub inequilateral, slightly curved, 5-septate, third c e l l enlarged, honey-yellow, 19-24 (-30) x 3.5-5 jio On Phalaris arundinacea L«, Ladner, leg. J.W.Eastham (H-2032fc* L. oulmifraga (Fr.) Ces. & De Not. (Plate 17, fig.12) Perithecia scattered or seriate, Immersed, later erumpent, subcompressed, ostiole short-conical, black, 300-400 x 200-250 ji; asci clavate, paraphysate, 72-114 x 10-16 jx\ spores b i - to trlse r i a t e above, fusoid-elongate, mostly curved, 7-9-septate, third c e l l somewhat swollen, slightly constricted at the septa, yellow to dull brown, (24*0 32-46 x (3-) 5-7 jx& On Agropyron  spieatum (Pursh.) Rydb©, Fairmont Hot Spiings, l e g . J.W.Eastham (H-2060); Agroatis alba L.* Nelson, leg. J.W.Eastham (H-2059); A. Rossae Vasey, Garibaldi, leg. J.W.Eastham (H-2058); A. scabra Willd., Revelstoke, leg. J.W.Eastham (H-2057); Calamagrostis canadensis (Michx.) Beauv., Ootsa Lake, leg. J.W.Eastham (H-2061); Elymus Macounli Vasey, Anahin Lake, Chllcoten, leg. C.F.Cornwall (H-2053); Panlcum occidentale Scrib., Gray Creek. 111c Kootenay Lakes, lego* J.W.Eastham (H-2065); Poa alpina L., Barkerville, leg. J.W.Eastham (H-2081); P. compressa L*, Cariboo, leg. J-W.Eastham (H-2084); P. nemoralie Lo, Spuzzum, leg. J.W .Eastham (H-2047); P. nervosa (Hook.) Vasey, leg* J.W.Eastham (H-2048); P. aalustris L., St.Mary*s Lake-jvKi^erley, leg. J.W Eastham (H-2046); P. stenaatha Trin*, Garibaldi, leg. J.W.Eastham (H-2077)* L. culmorum Awd. (Plate IV, fig.13) Perithecia scattered, immersed in the substrate, ostiole projecting, black, glabrous, up to 150jx diameter; asci elongate-clavate, vary short stalked or sessile, peraphysate, (45-) 60-90 (-100) x (MJ) 15-22ya; spores b i - to t r i s e r i a t e , oblong-fusoid, subinequilateral or slightly curved, 3-septate, second c e l l enlarged, honey-yellow to dull brown* (15-) 17-27 (-30) x 5-9 ji. On Calamagrostis  neglect a (Ehrk.) Gaertn., Ootsa Lake, leg. J.W.Eastham (H-2042); C. pur*  parascens R.Br., Clinton, l e g . J.W.Eastham (H-2087); C. rubescens Buck!., Cariboo Highway, leg* J.W.Eastham (H-2086); Calamovilfa l a t i f o l l a (Hooko), Scribn©,. Kettle Valley, leg . H.K.DeBeck (H-2088); Dactyl!s glomerata L., Harrison Lake (H-2031); Dapthonia intermedia Vasey, Garibaldi, leg J.W. Eastham (H-2041); Deschampsla atropurpurea (Wahl.) Scheele, Garibaldi, leg. J.W.Eastham (H-2040); Elymus innovatua Beal, Vanderhoof, leg. J.W. Eastham (H«?2038), Kechika River, lego N.C.Stewart (H-2039); E. Macounli Vasey, Aaahin Lake, Chileoten, leg. C.E.Cornwall (H-2065); Koelerla cristata (L.) Perso, Cariboo Road, leg. E.Wiison (H-2085), Mt. Brent, Penticton, leg. J.W.Eastham (H-2082); Pan!cum thermale Boland, Fatnaont Hot Springs, leg. J.VJ.Eastham (H-2083); Poa ampla Merr., Elk and Kootenay Rivers, lego J.W.Eastham (H-2080); P. compressa L., Cariboo, leg. J.W.Eastham (H-2084); P. glauca Vahl, Mount Rowe, leg. T.M.C.Taylor (H-2079); P. gracillima Vasey, Garibaldi, leg, J.W.Eastham (B$»2075); P. secunda Pre s i . , Ootsa Lake, lege, J.W.Eastham (H-2005)-; Trisetup spicatum (L.) Richt., Smithers, leg. J.W. Eastham (H-2076)e L. dumetorum Nieasl. (Plate IV, fig.14) Perithecia scattered, immersed, subglobose, collapsing, papillate, membranaceous-coriaceous, black, 200-300 y u diameter; asci clavate-oblong, short sialked, paraphysate, 60-84 x 6-9 jx; spores biseriate, fusoid^blong,;?straight or slightly curved, subacute, 3-septate, constricted at the septa, second c e l l s l i g h t l y swollen, olive-yellow, 15-20 x 3-4.5 jXo On Lonicera involuetratum Banks., Harrison Lake (H-l 971)« L. epicarecta (Gke.) Sacc. (Plate IV, fig.15) Perithecia scattered, black, globose, 165-210jx diameter; asci clavate, paraphysate, 66-90 £-114) x ' 20-23jx\ spores biseriate, e l l i p s o i d , 3-septate, second c e l l enlarged, (21-) 27-30 x 9-lln. On Oarex atratiformis B r i t t . , Garibaldi, leg. J . Davidson (H-2054). L. eustoma (Er.) Sacc. Sensu Berl. (plate IV, fig.16) Perithecia scattered or clustered, small, 90-150 (-200) jx diameter, immersed, later erumpent, globose then depressed; asci broad- to narrow-clavate, wall thickened, base claw-like, 45-70 x 8-12 jx; spores biseriate, fusoid-ellipsoid, inequilateral to curved, deep yellow-brown, 3-septate, not much constricted at the septa, 16-20 (-23) x 3.5-5.3 jx. On Phleum alpinum L., Anahin Lake, Chilcoten, leg.. C.E.Cornwall (H-2049). L. Gaultheriae Dear. Perithecia scattered, black, erumpent, ovoid-conic to globose, 115-255jx diameter; ostiole short, black, conic, shining; asci broad-linear, paraphysate, 75-80 x 6.5-7 yu; spores pale brown, uniseriate, 113, overlapping, 3-septate, larger in the upper half, 12-16 x 5yu. On dead stems of Gaultheria Shallon Pursh., Vancouver Island, August 1916, John Macoun 980, not seen (Deerness 1917: 349). L. ? L o l i i Syd. (Plate IV, fig.17) Perithecia sparse, black, immersed, f i n a l l y erumpent, globose, 180-210jx diameter; asci elongate-clavate, short-stalked, straight to curved, paraphysate, 72-102 (-120) x 13-18yi; spores biseriate, 3-septate, slightly constricted at the septa, yellow-brown, second c e l l enlarged, slightly curved, 24-32 x 6-9yu. On Carex sitchensis Prescott, Topley Landing, Babine Lake, leg. J.W.Eastham (fi-2091)i This collection, although on a different hast, f i t s the species well. * L. petkovicenais Bubak & Banojevic (Plate IV, fig.18) Perithecia globose, papillate* black, immersed, 100-150 jx diameter; asci elongate,short-stalked, paraphysate, 65-96 x 12-20 jx\ spores fusoid, straight or curved, attenuated at the ends, 3-septate, not constricted, pale brown, 38-50 (-60) x 4-5 jx. On Carex diandra Schrank., Vanddrhoof, leg. J.W.Eastham (H-2089); C. pyrenaica Wahl., Mt. Brent, Penticton, l e g . J.W.Eastham (H-2056); Juncus  Drummondii Meyer, Mt. Apex, Penticton, l e g . J.W.Eastham (H-1989); J. Parryl Engelm., Paradise Mine, Windermere, leg. G.A.Hardy (H-2034). L. pratensis Sacc. & Br. Perithecia immersed, globose, small, depressed, 250-330yi diameter, ostiole obtuse, erumpent; asci cylindrical-clavate, short-stalked, paraphysate, 68-112 x 8-12 jx; spores biseriate, fusiform, ends obtuse, f i r s t hyaline, later yellowish, 3-septate, slightly constricted at the septa, straight or curved, 28-32 x 5-6 jx» On Melilotus sp., not seen (CPDS 1938). 114. L. Silenes-acaulis de Not. (Plate 17, fig.19) Perithecia epiphyllous, globose, ostiole erumpent, black, 90-150ji diameter; asci oblong-clavate, sessile, peraphysate, (45-) 60-75 x (12-) 15-17 ji; spores conglomerated, fusoid, sl i g h t l y curved, 3-septate, not constricted, yellow-brown, 30-42 x 4.5-7 ji» On Silenea acaulis L., Cathedral Lakes (H-2052). L. tenera E l l i s . (Plate 17, fig.20) Perithecia somewhat depressed-globose, 200-350 jx diameter, immersed, later erumpent, ostiole papillate, membran-aceous; asci clavate, wall somewhat thickened, base claw-like, 75-95 x 6-7 ji; spores b i - to triseriate, fusoid-cylindrical, straight or sl i g h t l y curved, pale yellow, 5-septate, second c e l l enlarged, 18-23 x 2.5-3.5 ji» On Arabia Drummondii Gray, Mt. Apex, Penticton, leg. J.W.Eastham (H-2055); Draba stenoloba Ledeb., Mt. Brent, Penticton, Leg. J.W.Eastham (H-2019)« L. Typhae Karst. (Plate 17, fig.21) Perithecia sparse, amphigenous, innate, ostiole papillate, globose, 90-105 ji diameter, black; asci fusoid-elongate, subsessile, paraphysate, 50-70 x 9-12 p.; spores biseriate, fusoid-elongate, curved, ends obtuse, 3- (4-) septate, second c e l l enlarged, yellowish, 15-21 x 4.5-6 jpL» On Typha l a t i f o l i a L., Stanley Park, Vancouver ,(H-2062) • L. typhicola Karat. (Plate 17, fig.22) Perithecia erumpent, globose, 200-350 j i diameter, short papillate, black; asci clavate, stalked, paraphysate, 90-124 x 12 ji; spores biseriate, 9-septate, s l i g h t l y constricted at the septa, lig h t brown, middle c e l l enlarged, 33-50 x (4.5-) 6-10 On Typha l a t i f o l i a L., Stanley Park, Vancouver (H-2062). The following collections cannot be identified to species. Due to the scarcity of material they are described here b r i e f l y as Leptosphaeria sp. only. 115. On Arenaria obtusiloba (Hydb.) Fern., Cathedral Lakes (H-206?) (Plate IV, f i g . 23): Perithecia nearly superficial, brownish, coriaceous, covered with matted brown septate mycelium, globose, papillate, 400 p. diameter; asci clavate, stalked, paraphysate, 175-240 x 21-24yu; spores biseriate or crowded above, uniseriate below, r i c h brown, at f i r s t 4-, later 7-8-septate, constricted at the septa, third c e l l slightly enlarged, curved, ends obtuse, 45-54 x 10-12jx. On Arnica latifolia,Boag«, Cathedral Lakes (H-1972) (Plate IV, fig.24): Perithecia black, coriaceous, covered with short spiny dark brown hairs, erumpent, globose-conical, 400ji diameter; asci clavate, short-stalked, with scanty paraphyses, 180-250 x 30-36 .u; spores cylindrical, ends rounded, 4-5-septate, second c e l l enlarged, slightly constricted at the septa, biseriate, yellowish- to grey-brown, (55-) 69-69 x 15-18 jx. On Festuca,attaica Trin., Telegraph Creek District, leg. W.H.Matthews (H-2002), and Sitanion hystrix (Nutt.) J.G.Smith, Paradise Mine, Windermere, leg. G.A.Hardy (H-2074) (Plate JV, fig.25): Perithecia black, membran-aceous, immersed, becoming erumpent, globose-depressed, 150-330 ji diameter, with or without basal tomentum; asci broad clavate, short-stalked, para-physate, (105-) 120-150 (-210) x 27-33 jx; spores biseriate, yellow- or olive-brown, mostly 3-, occasionally 4-6-septate, second c e l l enlarged, constricted at the septa, straight or curved, (33-) 39-54 £-60) x (11-) 12-18 (-20) u. On Ledum glandulosum Nutt., (H-2068) and Salix pennata B a l l , (H-2069), Cathedral.Lakes (ELate IV, fig.26): Perithecia black, membranaceous-coriaceous, erumpent, globose-conical, 80-150 jx diameter, asci oblong-clavate, short stalked or sessile, aparaphysate, 36-66 x 15-21 u; spores 116. crowded, brown, 3-septate, deeply constricted at the central septum, each half ovate, 15-18 x 4.5-8 jx. On Ledum groenlandicum Oedr., Burnaby Lake', leg. V.C.Brink (H-2070) (Plate IV, fig.27): Perithecia black, membranaceous, globose, erumpent, slightly tamentose, 90-105 ya diameter, epiphyllous on grey spots on leaf and on branch; asci obclavate, sessile or short-stalked, paraphysate, 45-60 x 9-15 yi; spores overlapping biseriate, yellow-brown, 3-septate, second c e l l enlarged, straight or slightly curved, 15-18 (-21) x 4.5-6 yi. On Oxytropis alpicola (Hydb.) Jones, Sage Pass, 75001,. leg. T.M.C.Taylor (H-2066) (Plata IV, f i g . 28): Perithecia black, membranaceous, tomentose, erumpent, globose, papillate, 600-670 jx diameter; asci cylindrical-clavate, paraphysate, stalked, 150-180 x 13-15 jx\ spores l i g h t brown, b i - to t r i -seriate, (9-) 11-12-septate, middle septum constricted, c e l l above the constriction enlarged, guttulate near each septum, 59-69 x 6-7.5 jx* On Poa rupicola Nash, Sage Pass, 7500*, leg. T.M. C.Taylor (H-2078) (Plate IV, fig.29): Perithecia black, membranaceous, immersed, globose, 120-150 jx diameter; asci broad clavate, short stalked, paraphysate, 75-90 x 21-25yu; spores crowded biseriate, yellowish to reddish brown, 5-septate, third c e l l enlarged, constricted at the septa, ellipsoid-flattened, straight or curved, 24-36 x 8-9 jx. On Gramineae (ribbon grass), Duncan (H-2044): Perithecia black, membranaceous, visible under the epidermis, depressed-globose, 195-270 jx diameter; asci cylindrical-clavate, short-stalked, paraphysate* 90-120 x 9 jx; spores irreg-ularly biseriate, hyaline, later olive-brown, 5-6-septate, middle c e l l enlarged, each c e l l containing a guttule, 24-30 x 3-4jx» 117. Metasphaeria Sacc* Perithecia globose, immersed, covered at f i r s t by the epidermis, membranaceous-coriaceous, dark colored, with short, papillate or conical ostiole; asci cylindrical to clavate, eight-spored; spores ell i p s o i d , elongated, three- to many-celled, hyaline; paraphyses present. Spores uniseriate, ends rounded. .M. Macoun i i Spores subbiseriate, ends pointed. Perithecia large, 270-550jx diameter...........................M. Poae Perithecia smaller, 100-130 jx diameter. .M. zobeliana M. Macounii Dear. (Plate IV, fig.30) Perithecia black, globose-conical, bases flattened, beneath wood with ostioles v i s i b l e , through whitened areas of the stem, 300-750 u diameter; asci cylindrical, paraphysate, 135-170 (-210) x 7-9 jx; spores uniseriate, hyaline (becoming brown i n one collection), rounded at the ends, 3-septate* 16-22 x 6-7 yi. On dead decorticated stems of Rosa sp., Vancouver Island, June, 1915, John Macoun, not seen (Dearness 1916: 100). A collection on Rosa sp., Saanichton (H-2024) f i t s this des-cription perfectly except that the spores become brown with the;..end cells a lighter color. I f this collection i s identical with the species, as i t appears, i t should be transferred to Leptosphaeria. M. Poae (Niessl.) Sacc. (Plate IV, fig.31) Perithecia black, membranaceous-coriaceous, crowned with short setae, globose-depressed, 270-330 jx diameter; asci clavate, curved, paraphysate, 70-90 (-105) x 9-15 jx\ spores subellipsoid, straight to slightly curved, indistinctly 3-septate, second c e l l enlarged, guttulate, hyaline, biseriate, 22-30 x 4.5-6yu. On Poa interior Rydb., McDonald's Landing, Francois Lake, leg. J.W.Sastham (H-2035)* 118. *M. ?zobeliana Staritz. (Plate IV, fig.32) Perithecia immersed, ostiole erumpent, small, 100-130^1 diameter, coriaeeous-membranaceous; asci clavate, short-stalked, paraphysate, 54-60 x 7.5-^7 p; spores irregularly biseriate, hyaline, 4-celled, constricted at the septa, straight to slightly curved, 18-27 x 4-6jx. On Delphinium Brownii Rydb., Sinkut Lake, Vanderhoof, l e g . J.W.Eastham (H-2033). Ophiobolus Riess. Perithecia scattered or gregarious, subglobose, membranaceous-coriaceous, brown or black, immersed or suberumpent; ostiole papillate or elongated; asci c y l i n d r i c a l , paraphysate; spores f i l i f o r m , guttulate or septate, hyaline or yellowish. Spores separating into many parts at maturity 0. rudis Spores not separating. Spores 55-110 p. long. On twigs; spores 55-70 ji long.. .0. minor On herbaceous stems or stems of Gramineae; spore3 60-110 p long. On Gramineae; asci 90-115 x 10-13yu........ 0. cariceti -On herbaceous stems; asci 120-150 x 8-10ya.....O. acuminatus Spores over 115 p long. Perithecia on purplish stains on dead stalks; spores 140-165 p long. .0. porphyrogonus Perithecia on l i v i n g leaves; spores 115-155 jx long...0. Rostrupii 0. jacuminatus (Sow.) Duby (Plate IV, fig.33, Plate VI, fig.42) Perithecia scattered, immersed, f i n a l l y erumpent, ostiole conical to short-cylindrical, mycelial hyphae around the base, 300-400 diameter; asci cylindrical-clavate, 119. eight-spored, short-stalked, paraphysate, 120-150 (-180) x 8-14 j/x; spores fi l i f o r m , multinucleate, then multiseptate, usually with one joint near the middle swollen, yellowish, 75-150 x 2-4yu. On stalks of Cirslum  lanceolatum (L.) Scop., Vancouver Island* leg. J.Macoun, det. J.Dearness (OM-926); Cirsium sp., Saanichton (H-1969). 0. eariceti (Berk. & Br.) Sacc. (0. graminis Sacc.) Perithecia membran-aceous-carbonaceous, smooth, immersed, 330-500 jx diameter; ostioles beaked, erumpent, curved, obliquely attached; asci elongate-clavate, short-stalked, or sessile, eight-spored, paraphysate, 90-lL55x 10-13jx; spores fascicled to subbiseriate, hyaline, f i l i f o r m , curved, multi guttulate, f i n a l l y 5-7-septate, 60-90 x 3 u. Parasitic on wheat, barley, rye, and various wild grasses, causing the take-all disease. On Triticum asstivum L., Duncan, leg. W.Jones (immature) (H-612, CPDS 1930, 1935, 1936, 1939, 1940); on Avena sativa L . (CPDS 1939). 0.minor Bubak (Plate IV, fig.34) Perithecia globose to depressed, immersed with the short beak v i s i b l e , later erumpent, black, membranaceous, 200-300 jx diameter; asci cylindrical, broader near base, short stalked, paraphysate, 54-90 x 7-12 jx; spores f i l i f o r m , more or less curved, often bent almost at right angles when free from the ascus, with several guttules and septa, hyaline, 45-70 x l-2.5yi. On dead twigs of Lonicera involucratum Banks, Harrison Lake (H-1971). 0. porphyrogonus (Tode) Sacc. (Plate IV, fig.35) Perithecia scattered or gregarious, mostly oh purplish stains, immersed, la t e r erumpent, globose-conical, black, glabrous or covered with short hyphae, 300-400jx diameter; ostiole conical to cylindrical; asci cylindrical, very short stalked, 120. eight-spored, paraphysate, 140-165 x 4.5-8 jx; spores f i l i f o r m , p a r a l l e l , multinucleate, later multiseptate, yellowish, 130-160 x 1-2 J I . On dead herbaceous stems, Duncan (H-1970)• 0. Rostrupii Ferdin. & Winge (Plate IV, fig.36) Perithecia amphigenous, immersed, beak erumpent, flattened-globose, 300-400 ji diameter, membran-aceous, black; asci cylindrical, sessile, eight-spored, paraphyaate, 125-165 x 14-16 jx; spores f i l i f o i m , hyaline, p a r a l l e l , multiguttulate, then 6-7-septate, constricted at third and fourth septa, 115-135 x 1 - 4 O n leaves of Prunella vulgaris L.,, Patricia Bay, leg. W.Jones (H-436 , 0-15328, V-2161), North Saanich, leg. B.Lawson (H-63, H-613), Parksville, leg. W. Jones ($1-19994). 0. rudis (Bie3S.) Rehm (Plate IV, fig.37) Perithecia forming small groups, immersed, conic-papillate ostiole erumpent, black, membranaceous, 320-640 jx diameter; asci cylindrical-clavate, short stalked, eight-spored, paraphysate, 135-210 x 9-10.5 jx; spores lying p a r a l l e l , f i l i f o r m , with many septa, sep-arating at these into short cylindrical, blunt-ended sections, 5-7 x 3-3.5yu, hyaline to brownish. On stems of Phacelia leptosepala Rydb., Sage Pass, 7500', leg. T.M.C.Taylor (H-1968). Asci are longer in thia collection than noted by Winter (140-150 u). Phomatospora Sacc. Without stroma, perithecia immersed, occasionally erumpent, ostiole short, conical, globose, black, membranaceous; asci cylindrical, eight-spored; spores one-celled, hyaline, small, uniseriate, e l l i p s o i d ; with or without paraphyses. 121. Spores large, 9-15 JX longi,. .P. argyrostigma Spores smaller, 7-9 jx long P. therophila P. ?argyrostigma (Berk.) Sacc. (Plate IV, fig.38) Perithecia widely scattered, small, depressed-globose, immersed; asci cylindrical to clavate, (45-) 60-75 x 9-10 (-18)^ u, sessile, eight-spored; spores boat-shaped, hyaline, biguttulate, granular, 9-15 x 3-5 jx, occasionally one or two large spores in an ascus, 28-33 x 6-7.5 jx» On dead leaves of Yucca sp., U.B.C. (H-1952); no measurements of asci or spores i s given in any description, so that this determination i s questionable. P. therophila (Desm.) Sacc. (Plate IV, fig.39) Perithecia black, barely erumpent, membranaceous, globose, 200 (-300) jx diameter; asci cylindrical, 44-75 (-90) x 4.5-7 jx, eight-spored; paraphyses numerous, taper-pointed; spores obliquely uniseriate, hyaline, fusoid-ellipsoid, one-celled, 7-9 x 2.5-4 fx* On Juncus Drummondii Meyer, Mt. Apex, Penticton, leg. J.W.Eastham (H-1989). Physalospora Hiessi. Perithecia Immersed, globose, with the conical ostiole erumpent, black, smooth, membranaceous, to coriaceous; asci clavate, eight-spored; spores oblong, blunt-ended, one-celled, hyaline or light colored; paraphyses present. P. Miyabeana Fukashi (Plate IV, fig.40) Perithecia black, membranaceous, single or gregarious, Immersed, ostioles erumpent through blackened epidermis, globose, 200^1 diameter; asci clavate, short stalked, 58.5-75 x 10-12jx£ spores greenish hyaline, one-celled, irregularly biseriate, ellipsoid, guttulate, 14-17 x 4.5-6 jx* Causing black canker or blight of willow; 122. on Salix ?babylonica L.« Abbotsford, det. I.L.Conners (0-6463, 0-6465); Salix sp., Abbotsford (0-6709, V-229), Vancouver (V-2211, V-2212), Chiiliwack (V-233), Fraser Valley (0-7184, CPDS 1940). Physalosporasp. Here are placed two collections which have not been identified satisfactorily. On Aplopappus l y a l l i i Gray, Garibaldi, leg. J.Davidson (H-2001) (Plate IV, f i g . 41): Perithecia black, membranaceous, amphigenous, globose, about 150 u diameter, ostiole plane; asci clavate, short stalked, paraphysate, 52-60 x 10-12 u; spores yellowish, one-celled, biseriate, ovate-oblong, 12-15 x 4.5-6 ji» On Festuca attaica Trin., Telegraph Creek Dis t r i c t , leg. W.H.Matthews (H-2002) (Plate IV, fig.42): Perithecia black membranaceous, immersed, globose, 150 u diameter; asci obclavate, sessile, paraphysate, 36-57 x 9-14yi; spores greenish, biguttulate, el l i p s o i d , one-celled, 12-14 x 6ji» P. obtusa (Schw.) Cke. is recorded on apple (CPDS 1939, 1947, 1948) from North Saanich, Terrace, and Pemberton Meadows. According to Stevens (1935: 536-548) this fungus i s not found in the Pacific Northwest. No collections have been seen. Pleospora Rab. (Including Pyrenophora Fr., Clathrospora Rab., and Catharinia Sacc.) Perithecia inmersed at f i r s t , often becoming erumpent, globose to conical or depressed, black, membranaceous to coriaceous, smooth or with basal tomentum or apical setae or both, ostiole short papillate; asci cylindrical-clavate, wall thin or thick, usually thickened at the apex, eight-spored (occasionally less than eight); spores oblong, ell i p s o i d , fusoid, 123. or flattened, muriformly septate, hyaline to yellow to dark brown; paraphyses or interthecial tissues, present. In accordance with Wehmeyer (1946, 1948, 1951), the collections noted hare are nil grouped under the genus Pleospora; separation into four genera i s d i f f i c u l t when a number of collections show variation from, for instance, dis t i n c t l y setose to tomentose or glabrous perithecia in one species. Perithecia typically depressed-globose, with a basal tomentum or none; spores flattened, longitudinal septa not extending into the end walls...... .. Clathrospora Spores three-septate. Spores large, 35-42jx long.. .P. macrospora Spores smaller, up to 36 jx long. Spores (27-) 30-36 jx long..... P. diplospora Spore8 21-53 long ,...P. permunda Spores more than three-septate. Spores four- to six-septate. Spores 9-11 jx.wide on the broad side, five-septate; on Cirsium. ....P. baccata Spores 10 jx or wider.; four- to six-septate. Spores four-.to five-(to six) septate, (18-) 23-33 x 8-14 jx... .P. pentamera Spores five-septate, 27-35 x 15-16 U......P. planispora Spores more than six-septate, large, with numerous longitudinal 124. Perithecia variable, globose, conical, or depressed, with or without basal tomentum and setae; spores not flattened..- .Pleospora and Pyrenophora Spores three-septate. P. trichostcma Spores more than three-septate. Spores four- to seven-septate. Spores always flye-septate. Longitudinal septum through a l l cells..... .P. f infectoria Longitudinal septum never through end c e l l s . P. vulgaris Spores four- to seven-septate. Spores four- to six-septate, upper half globose, one- to two-septate, lower half longer, and narrower, two- to three-septate; perithecia very small, conical, glabrous... P. ollgasca Spores not as above, fi v e - to seven-septate; pe r i -thecia larger, mostly tomentose or setose. Perithecia small with apical crown of short setae and no basal tomentum...P. ambigua var. Orandallli Perithecia larger, globose to depressed, basal tomentum present, often setae also. Spores fusoid-oblong, usually f i v e -septate .P. angustata Spores oblong-ellipsoid, ends obtuse, fiv e - to 3even-septafce........P. Gompositarum Spores seven-septate or more; Spores mostly seven-septate. Perithecia glabrous or tomentose at base. 125. On Gramineae and Cyperaceae. Spores fusoid-oblong.. • .P. arctiea Spores ellipsoid-oblong, ends obtuse......... .P. discors On other plants. Perithecia small, spores broad, 14-25wide. P. Balsamorrhizae Perithecia larger, spores narrower. Spores yellow-brown, nearly straight, uni- to biseriate .P. herbarum Spores darker brown, inequilateral, mostly biseriate P. herbarum Tar. occidentalis Perithecia tomentose or setose or both. Perithecia flattened-globose, tomentose and setose; spores 20-30 x 9-12 y i . . . . ...P. helvetica Perithecia globose to pyriform, more definitely setose; spores larger, 24.5-37 x 10*5-18ji. ..P. Tragacanthae Spores mostly more than seven-septate. Perithecia definitely setose, usually globose to conical P. comata Perithecia tomentose, with occasional setae, globose to depressed. % Spores 30-46 x 1 5 - 1 9 y i , (sevenfe) eight- to nine-septate....... ........P. coloradehsis 126 Spores larger, 33-70 ji. long, eight- to fourteen-septate• Spores 33-58 (-62) x 13-25 jxt eight- to ten-septate....... .P. njegusensis Spores 43-81 x 16-30 ji, twelve- to fourteen-septate at maturity .....P. asymmetries P. ambigua,(Berl.fr Bres.) Wefam. var. Crandallli (E11.& Ev.) Wehm. (Plate IV, f i g . 43) Perithecia 100-200 jx diameter, globose to pyriform, usually on leaves, petioles or small stems, with an apical crown of short, stout, erect pointed setae and usually no basal tomenturn; asci clavate, with a thickened wall and a claw-like base, (60-) 75-105 x 17-23 (-27) ji; spores biseriate or becoming uniseriate, oblong-ellipsoid, red-brown, 5-7-septate, straight or sli g h t l y inequilateral, s l i g h t l y asymmetric, tapered below, with a single longitudinal septum, ends broadly rounded, 19.5-26.5 x (8.5) 9-12.5^i. On leaves of Arenaria obtusiiobs. (Bydb.) Fern., Cathedral Lakes (H-2067). P. angustata Wehm. (Plate IV, fig.44) Perithecia 150-300^1 diameter, globose or depressed, immersed, then erumpent, tomentose and setose; asci clavate to cylindrical-clavate, walls somewhat thickened, base claw-like, 75-115 x 11-23 ji; spores overlapping uniseriate to biseriate, fusoid- to clavate-e l l i p s o i d , 5-7-septate, yellow- to reddish-brown, straighr or slightly inequilateral, one longitudinal septum, (16-) 19-26 x 7-9 (-10) jx» On Artemisia vulgaris L. var. discolor (Dougl.) Peck, Cathedral Lakes (H-2152); Gaillardia aristate Pursh., Gray Creek, Kootenay Lakes, leg. J.W.Eastham (H-2214) o P. arctiea Karst. (Plate IV, fig.45) Perithecia immersed, slightly erumpent, 127. globose, black, very short tomentose, 200-300 jx diameter; asci clavate, short-stalked, 135-200 x 24-50 jx; spores biseriate, fusoid-pblong, slightly inequilateral, 7-septate, constricted at the central septum, yellowish-brown, 36-50 x 13-18 jx. On Poa gracillima Vasey, Garibaldi, leg. J.W. Eastham (H-2075)j Trisetum spicatum (L.) Eicht., Garibaldi, leg. J.W. Eastham (H-2322). P. asymmetries Wehm. (Plate 17, fig.46) Perithecia 250-500 jx diameter, globose to depressed, erumpent as papillate ostioles, smooth or tomentose at the base, i n a few cases setose; asci clavate* becoming elongate, apical wall thickened, base claw-like, 170-250 (-350) x (20-) 40-60^i; spores biseriate, cylindrical-ellipsoid, ypllow-brown to dark brown, 8^-septate, soon becoming 12-14-septate, constricted at central primary septum, straight, strongly asymmetric, broader and shorter above, ends broadly rounded or abruptly tapered, 2-4 longitudinal septa, 43-81 x 16-50 jx. On Achillea  lanulosa Nutt., Cathedral Lakes (H-2277); Antennaria media Greene, Cathedral Lakes (H-2290); Aplopappus Brandegel Gray, Cathedral Lakes (H-l957); Artemisia longepedunculata Rydb., Mt. Baldy, Chua Chua, leg. 7.C.Brink (H-2506J; Astragalus glareosus Dougl.* Kaleden, leg. E.Milley (H-2249); Draba stenoloba Ledeb., Mt. Brent, Penticton, leg. J.W.Eastham (H-2019); Erigeron sp., Cathedral Lakes (H-2270); Lupinus 1atifolius Agh. var. subalpinus (Piper & Robins.) C.P.Sm. Cathedral Lakes (H-2162); Ranunculus  Eschscholtzii Schlecht, Tenquille Lake, Pemberton, leg. W.Taylor (H-2291), Kokanee, leg. J.W.Eastham (H-2292), Garibaldi, leg. J.Davidson (H-2295); Viola adunca Smith, Sooke, leg. J.yf.Eastham (H-2202). P. (Clathrospora) baccata E H . (Plate IV, fig.47) Perithecia scattered, depressed-globose, papillate, immersed at f i r s t , becoming superficial, 128. tomeifetose at base, 300-500^1 diameter; asci clavate, short stalked, 75-, 120 x 15-24 jx; spores p a r t i a l l y biseriate, oblong-ovate, 5-septate, 1-2 longitudinal septa, 20-30 x 10-14 x 9 jx. On Cirsium arvense (L.) Scop., Princeton (H-2111, H-2110); C. lanceolatum (L.) Scop., Vancouver Island, leg. J.Macoun (0M-926). P. Balsamorrhizae Tracy & Earle (Plate I f, fig.43) Perithecia small, 100-250jx diameter, globose, f i n a l l y somewhat flattened, ostiole minute papillate, tomentose; asci broad ciavate, thick-walled, with a daw-like base, 115-175 x 35-65 jx; spores b i - to triseriate, oblong-ellipsoid, straight, ends bluntj broad, constricted at the central septum, 7- (8-) septate, yellow-brown at f i r s t , becoming black brown to opaque, 33-63 x 14-25 u. On Erigeron f i l i f o l i u s (Hook.) Nutt., Anarchist Mt., Osoyoos, leg. J.W.Eastham (H-2300); Solidago decumbens Greene, Sinkut Mt., Vander-hoof, leg.. J.W.Eastham (H-2276). P. coloradensis E l l . & Ev. (Piate IV, fig.49) Perithecia 200-400 jx diameter, scattered, depressed-globose, tomentose; asci broad clavate, apical wall thickened, base claw-like, 90-140 x 20-42jx; spores biseriate, oblong-ellipsoid, (7-) 8-9-septate, dark yellow-brown to dark red-brown, mostly asymmetric, broader and shorter above, narrower and longer below, constricted at central septum, ends broadly rounded, lower end of spore commonly with irregular oblique septation, 30-44 (-46) x 14-19'ji. On Anemone multifida Poir.affinis hudsoniana, Bennett, leg. B.Boivin (H-2i29); Astragalus campsstris, Armstrong, leg. E.Wilson (H-2285); Phacelia leucophylla SEorr .f Vernon (H-l 940) • 129. P. oomata Niessl (P. o l l l a t a E l l . 1 (Plate IV, fig,50, Plate VI, flg.43) Perithecia 100-350 p diameter, scattered, globose to conical, immersed at f i r s t , often erumpent-stiperfioial, with a crown of brown, pointed setae at the apex; asci broad.clavate, thiols walled, base plaw-like,99tii200 x 26-35 jxi spores biseriate, oblong-ellipsoid, dark yellow- brown to dark red-brown, 7-8-9-.septe.te, straight or slightly carved, mostly asymmetric, narrower and more tapered below, ends broadly^roonded, constricted at the middle and sometimes at the other septa, 28-50 x 13-18 On Anemone  fitobosa Nutt., between Redstone and Chelquoit Lakes, leg. J.W.Eastham (H-2128); A; multi f Ida Poir. a f f i n i s hudsoniana. Bennett, leg. B.Boivin (H-2129); Aulopappus I y a l l l l Gray. Garibaldi, leg. J.Davidson (H-2001)j Arabia oanesoens Nutt., Snmmerland, leg. G.E.Woolliams (H-1683); Artemisia  borealia P a l l . . Sinkut ffit., Vanderhoof, leg. J.W.Eastham (H-2304J; CastilleJa minlata Dougl.. Cathedral Lakes (H-2163); Chrysopsis v l l l o s a (Pursh.) Butt. var. hispida (Nutt. ) Gray, Fairmont Hot Springs, leg. J.W. Eastham (H-2117); Erigeron linearis (Hook.) piper, Tranqaille, leg. T.M..Q. •Taylor (H-1990); E. lonchophyllus Hook.. Windermere, leg. JiW.Eastham (H-2212); Erigeron sp^. Cathedral Lakes (BV.2274); Oxytropls alp loo l a (Rydb.) Jones. Sage Pass, leg. T.M.C. Taylor (H-2066); Phacelia serioea Gray; Garibaldi, leg. W.Cottle, (H-2254, H-2253, H-2198); Phlox diffusa Benth., Garibaldi, leg. W..Cottle (H-1816), Mt. Copley, leg. D.Elvidge (H-2133); P. Donglasll Hook.. The Lions, leg. F« Perry (B-2130); Pft rlgMa Benth.j Elko, leg; J.W.Eastham (H-2305); P. speolosa Pursh.. Penticton. leg. J.W.Eastham (BU2132); Polemonlum coeraleom L. sabsp^ Occident ale (Greene) Davids., Mile 107, Alaska Highway, leg. M.Y.Williams (H-2135}; P. pnloherrlmam Hook., Kimberley, leg. j.W.Easthsn (H-2328); Pw vlsoosnm Nntt>. Garibaldi, 130* leg. W.Taylor (H-2136); Pot en t i l l a dlssecta Hutt.. Garibaldi, leg. J . Davidson (H-2071)$ py dlv e r s i f o l l a lehm,, Kennoo Mining Gamp, leg. G.A.IToel (H-2003J; Garibaldi, leg. J.Davidson (H-2071aJ$ Silene Douglas!1 Hook,, Cathedral Lakes (H-2148)$ Stenanthlum oocidentale Gray. Mt.Stephen, Field, leg. J .M.Fogg (H-2323). P, Composltarum Earle (Plate 17, f i g . 51) Peri the oia scattered, globose to depressed, ostiole mi nut e papillate, tomentose at base and sometimes with a few apical spines, 100.350 x 100-250 n« asci stout elevate, thick walled, with a claw-like base, 65-135 z 14-23 jt\ spores biseriate, oblong.ellipsoid, ends rounded, obtuse, 5~7 Tseptate, with usually one longitudinal septum i n each o e l l , including the end ce l l s , 19.5-28 x B-12.5 j i , dark brown. On Aauilegia fbrmosa Fisoh,, Tenquille Lake, Pemberton, leg. W.Taylor (H-2261J; Draba Paysonli Macfcr. var. Treleasil (Schula) Hitchc., Rainbow Et., Bella Coo l a , leg. F.Perry (H-2265); Erigeron oorymbosus ISutt.. Eamloops, leg. E. W.Tisdale (H-2211); E. f i l i f o l i u s (Hook.) Hutt., Anarchist Mt,, Osoyoos, leg. J.WiEastham (H-2g00h E. pumllus subsp. intermedina r Tobaoco Plains, leg, J.W.Eastham (H-2213); E. speclosua DQ. var. maoranthus (Hutt.) Cronq. Vernon (H-2064); I r i s germanloa L., Dunoan (H-1993); Seneolo paupercuius Michx,, Golden, leg. J.W.Eastham (H-2299)j Stenanthium Occidentale Gray, Mt. Stephen, Field, leg. J.M.Fogg (H-2323). P. (Clathrospora) dlplospora E l l . & Ev. (Plate IV* fig.52) Peritheeia scattered, depressed-spherical, 250-600 p. diameter, with a radiating basal tomentum; asoi clavate, thick walled, with a claw-like base, 125-175 x 26-40 JL\ spores biseriate, ovoid, rhomboid-ellipsoid, olathrate-flattened, 3-septate, central cells with a longitudinal septum, end oelIs without. 131. cylindrical to fusoid i n edge view, 30-43 x 16-24 z 12.5-15 n. On phlox  longltolla Hutt.. Penticton (H-2112U PWwdiseora (Mont.) Ces. & de Hot* (Plate V, fig.1) Peritheoia sparse, globose, 100-120 JL diameter, tomentose at base, immersed; asci broad-olavate, short stalked, curved, 120-140 z 27-32 p:; spores biseriate, oblong-, ovoid, lower half narrower, straight to inequilateral, 7-septate, 1-4-longitudinally septate, yellpw-browa, constricted at the central septum, 27-35 (-45) x 1&-16 jx» On Carex Hoodil Boott.. Fort Fraser, leg, J.W, Eastham (H-2118); Luzula oampestrls (L.) DC, Mt, Seymour (H-21Q6J; Poa  ampla Merr.. Elk and Kootenay Rivers, leg, J.W.Eastham (H-2080); P. oonflnls Vasey, Saanich Spit, leg. J.W.Eastham (H-2228); Gramineae indet., Mt. Seymour (H-2095)* P.. (Clathrospora) Elynae (Rab.) Ces. & de Hot. (Plate V, fig,2) Peritheoia immersed, depressed^globose, ostiole minute papillate, 260 jx diameter; asci broad-clavate, abruptly short stalked, 108-150 z 35-51 J * ; spores b i - to triseriate, oblong to broad ell i p s o i d , dark brown, 7-8-septate, 3-5-longitudinally septate, 45-60 z 18-27 u. On Carex atratiformls B r i t . , Garibaldi, leg. J.Davidson (H-2054); ^nzula sploata (L,) DC, Dunn Peak, Chua Chua, leg, E.W.Tisdale (H-2124). Pi helvetica Uiessl (P. ohrysospora Niessl) (Plate V, fig.3) Peritheoia 150-400 ji diameter, scattered, globose to depressed, immersed at f i r s t , later slightly erumpent, tomentose below, setose above; asci clavate to broad-olavate, wall somewhat thickened, base olaw-like, 80-140 z 17-24 (-28) spores biseriate, oblong-ellipsold, yellow-brown to dark red-brown, 5- to mostly 7-septate, straight or slightly curved, often assymmetrlo with a 132* narrower tapered lower portion, broadly rounded at the ends, more or ISSB constrioted at the septa, with 2-3 longitudinal septa, 20-30 x 9-12,5 (-14) ju On Agropyron traohloanlnm var, unilaterale (Cassidy) Malta, Fairmont Hot Springs, leg. J.W.Eastham (H-2140) ; Aaaphalls margarltaoea (L.) D.& H., Mt. Qaven, Flagstone, leg. F, B.Peterson (H-2303)t Draba alpina L.. Garibaldi, leg. J.Davidson (H-2294); D. Pay so n i l Macbr., Cathedral Lakes (H-2157); Poa alpina L.. Hudson Bay Mt., Smithers, leg. J.W.Eastham (H-2231); P; glauoa v a h l . . Mou^t Rowe, leg. T«M»C.Taylor (H-2070); P. herbarum (Pers. ) Rab; (Plate Y, fig.4) Peritheoia scattered, depressed-globose, ostiole papillate; 250.400 z 150-300 n, somewhat collapsed with age, immersed; asci clavate, thick walled, with a claw-like base, 90-165 (-215) z partially constricted 24-28 (-40) n; spores 7-septate, with 1-2 longitudinal septa; uniseriate, yellow-brown, ovoid«oblpng, rounded at the ends; at the central septum and slightly at the others, 28-45 z 14-18 j i . On Allium Gepa L», Duncan (H-2256), Agassiz (CPDS 1944); Aqnllegia formosa Flsch., Duncan (H-2182); Armerla maritlma W i l l i . . U.B.C. (H-2169); Bras si oa spp;, Duncan (H-2257); Campanula SP.. Dunoan (H«i2099J H-1996, H-2330); Qentaurea Jaoea; U.B.C. (£-2176}; Qlohorlum Intybug L.. Salmon Arm (H-2259); Cirsium sp.. Saanichton (H-1969); D i g i t a l i s sp», U.B.C, (H-2258); Erigeron sp., Saanichton (H-2315); Hieraolum an ran t l a cram L., U.B.C. (ii-2282); I r i s  germanloa L«. Dunoan, (H-1993); Lathyrqs odoratus L>. Vancouver Island, leg. J.Macoun (0M unnumbered, March 11, 1915), Duncan (H-2181); Lupinus sp;; U.B.C. (H-1995), Vancouver Island, leg. J.Macoun (OM-916); Lychnis Coronaria Dear., Duncan (H-2179); Oenothera biennis L., U.B.C. (H-1992), Duncan (H-I994)f Oenothera sp., U.B.C. (H-2113); Pisnm sativum L«, Dunoan (H-2177), Cobble H i l l (CPDS 1948); Primula sp^, U.B.C. (H-2170); Rumez sp;, Saanichton (H-21I4); 133. Sanicula orassioaulis Poepp., Vancouver Island, leg. J.Macoun (OM unnumbered, July 17, 1916, OMU586); Taneoetum vulgare L., U.B.C. (H-2171); Trifolium sp., Sidney, leg. J.Macoun (OM-370); Liliaceae indet*, Duncan (H-2295); herbaceous stems, Duncan (H-2255), North Vanoouver (H-2092). P. herbarum (Pers, ) Rab, var, occidental i s Wehm. . fPlate V, f i g , 5) Differing from the species i n the darker, red-brown spores vfalch are more inequilateral, more consistently biseriate i n shorter asci, asci 80-145 x 20-28 (-35) p.; spores 26-35 x 11*16 ju On Achillea Millefolium L., Mt. Caven, Flagstone, leg, F*B.Peterson (H-2279); Antennarla anaphaloides var, genulna Boivin, Elko, leg, J.W.Eastham (H-2017)t A. dimorpha T.& G,f Summerland, leg* G.E. Wqolliams (H-1682); A, umbrinella Rvdb.. Merritt, leg. T.M.G.Taylor (H-2016)j Aster sp., Salmon Arm (H-2289); Hleraoeum Albertinum Farr., Mt* Caven, Flagstone leg. F.B.Petereon (H-2199); Penstemon tolmiei Hook*. Mt* Brent, Penticton, leg. J.W .Eastham (H-2201 j ; To f i e l d i a coccinea Rich.. Fort Nelson, A l oan Highway, leg. M.Y.Willlams (H-2245). P* infectoria Fckl., (Plate V, fig,6) Peritheoia seriate along culms, rarely solitary, erumpent, spherical, black, around 350 p. diameter; asci clavate to oylindrical-olavate, short stalked, 84rl38 x 12-17^B; spores uniseriate, occasionally subbiseriate, ellipsoid to OMpid-oblong, 5-septate, with one longitudinal septum, constricted at the pantral septum, golden brown becoming darker, 18-26 x 7-12 u* On Gramineae indet,, Saaniohton (H-2317). P* (Olatfarospora) maoroapora Schroet* (Plate V, fig*7) Peritheoia gregarious, globose-depressed, 250-300 n diameter, blaok, erumpent, thick walled, slightly tomentose; asoi broad olavate, attenuated to a short stalk, 135-170 x 24-37 (-45) a; spores irregular, ellipsoid, 3-septate, with a longitudinal septum through the middle c e l l s , flattened, yellow-brown, 35-45 x 13-31 x 9-12ju 134. On Arctagrostis l a t i f o l i a (R.Br.) Griseb., Telegraph Creek District, leg. W.H.Matthews (H-2021); Elymus innovatus Beal., Kechika River north of Sifton Pass, lego N.C.Stewart (H-2039). P. njegusensis Bubo (Plate V, fig.8) Perithecia (150-) 200-400 jx diameter globose or depressed,glabrous, tomentose or even setose; walls rather thick; a3ci broad-clavate, thick-walled, with a claw-like base, 105-220 x 30-55 jx\ spores biseriate, oblong-ellipsoid, dark yellow-brown to very dark red-brown 8-10-septate, mostly straight, rarely inequilateral, mostly asymmetric with a broader, shorter upper and a longer, narrower lower portion, constricted at the central septum and sometimes at the other septa, ends broadly rounded longitudinal septa one to three, 33-58 (-62) x 13-25 jx» On Brigeron com- positns Pursh., var. glabratua Macoun, Bennett, leg. J.M.Gillett (H-2210), Okanagan Landing, leg. E.Wilson (H-2209), P. oligasca Bub. (Plate 7, fig.9, Plate VI, fig.44) Perithecia thiokly scattered, minute, 70-150 jx diameter, conical-globose, with a comparatively large, conical, often curved, beak-like ostiole, soon erumpent superficial; asci few, at f i r s t broad saccate, almost globose, with a thickened apical wall and a claw-like base, becoming broad clavate, 45-70 x 30-60 jx\ spores b i - to t r i s e r i a t e , oblong-ellipsoid, brown, 4- to 6-septate, constricted at the second or thi r d septum, upper half short, stout, globose, and 1- to 2-septate, lower half longer, narrower, oblong, and 2- to 3-septate, with one, or rarely two longitudinal septa in a l l but the end c e l l s , (18-) 25-36 ii long, 9-14 jx wide i n the upper, and 8-11 jx wide i n the lower half. Many of the collections l i s t e d here are immature, and are determined as this species on the basis of perithecial size and shape and ascus shape. On Antennaria  anaphaloldes Rydb. var. genuine Bolvin, ELko, leg. J.W.Eastham (H-2017); 135. A» dimorpha T. & G., Summerland, leg. G.E.Woolliams (H-1682); A. Howell i i Greene, Williams Lake, Cariboo, leg. E.W.Tisdale (H-2015); A. mlcrophylla Rydb., Big Creek, leg. C.Bertrand (H-2013); A. rosea Greene, St. Mary's Lake, Klmberley, l e g . J.W.Eastham (H-2014); A. umbrinella Rydb., Merritt, leg. T.M.C.Taylor (H-2016); Dryas octopetela L., Cathedral Lakes (H-202?), Mt. Baldy, Chua Chua, leg. E.W.Tisdale (H-2020); Erjogonum subalpinum Greene, Cathedral Lakes (H-2028); B. umbellatum Torr. var. maJus Benth., Mt, Apex, Penticton, leg. J.W.Eastham (H-2030); Geum trifitorum Pursh., Chelquoit Lake, Chilcotin, leg. J.W.Eastham (H-2020); Potentilla dissects Nutt., Garibaldi, leg. J.Davidson (H-2Q71); P. diversifolia Lehm., Kennco Mining Camp, leg. G.A.Noel (H-2003); P. emarginata Pursh., Garibaldi, leg. J.W.Eastham (H-2G73); Seneclo canus Hook., Cathedral Lakes (H-2072), P. (dathrospora) pentamera Karat. (Plate V, fig.10) Perithecia immersed, later erumpent, subglobose to depressed, ostiole conical and depressed, glabrous or tomentose at the base, 150-250 diameter; asci clavate, short-stalked, 65-150 x 24-30 j i ; 3pores biseriate, ovoid-ellipsoid to rhomboid, flattened, 4-5-(6-) septate, longitudinal septum in the middle c e l l s , 15-34 x 11-15 x 7-10 JL. On Agropyron latiglume (Scribn. & Sm.) Rydb., Sage Pass, leg. T.M.C.Taylor (H-2319), Garibaldi, leg. J.W.Eastham (H-2141); Agrostis Rossae Vasey, Garibaldi, leg. J.W.Eastham (H-2058); Andropogon  acoparius MIchx., Fairmont Hot Springs, leg. J.W.Eastham (H-2267); Calam-agrostis purpurascens R.Br., Chasm, Clinton, leg. J.W.Eastham (H*2087); Carex aperta Boott., Mirror Lake, Kaslo, leg . J.W.Eastham (H-2260); Oryzopsis hymenoides (R.& S.) flicker, Penticton, l e g . J.W.Eastham (H-2234)| Poa compressa L., Flying V Ranch, Cariboo, leg. J.W.Eastham (H-2084; P. interior Rydb., McDonald's Landing, Francois Lake, leg. J.W.Eastham 136 (H-2035); Stipa comata Trin. & Rupr»» Cranbrook, leg. J.W.Eastham (H-2222); Gramineae indet., Kamloops, leg. J.Macoun (OM-154). P. (Clathrospora) permunda (Cke.) Sacc. (Plate 7, f i g . l l ) Perithecia thickly scattered,immersed, f i n a l l y superficial, flattened-spherical, ostiole minute, 200-400 ji diameter, collapsing pezizoid, saucer-shaped with age, surrounded by a radiating brown tomentum;,asci broadly clavate, with a thickened wall and claw-like base, 75-115 (-150) x 19-30 yi; spores biseriate, broadly rhomboid-fusoid to clavate-ellipsoid 4n face view, 3-septate, end cross walls often at an oblique nY" angle to the single central septum which does not extend into the end c e l l s , 21-33 x 10-12.5 (-15) x 7-10 u. Oh Astragalus <campestris, Armstrong, leg. E.Wilson (H-2285); Phlox longjfolia Nutt., Mt. Munson, Penticton, leg. J.W.Eastham (H-2264); P. rigida Benth., Elko, leg. J.W.Eastham (H-2305); Stipa comata Trin. & Rupr., Dewdrop Flat, leg. V.C.Brink, det. F.Dickson (H-2026). P. (Clathrospora) planlspora E l l . (Plate V, fig.12) Perithecia scattered, depressed-globose, slightly tomentose at the base, about 300 ji diameter; asci clavate, thick walled, with a claw-like base, 78-100 (-120) x 22-26 ji; spores biseriate, broadly rhomboid- to fusoid-ellipsoid in face view, f l a t -tened, 5-septate, not constricted at the septa, with a single longitudinal septum through the central ce l l s , 27-35 x 13-16 x 9-11 yu. On Arabis hirsuta (L.) Scop. var. glabrata, Crawford Bay, leg. H.Murray (H-2320); A. Holboellii Hornem., Landsdown, Okanagan, leg. E.Wilson (H-2321). P. Tragacanthae Rab. (Plate V, fig.13) Perithecia 100-400 jx diameter, globose, slightly flattened, or conic-globose to pyriform with a conical ostiole, immersed, later erumpent, setose about the ostiole; asci clavate 137 to stout-clavate, thick walled, base claw-like, 95-140 x (15-) 24-35 jx; spores biseriate, oblong to clavate-ellipsoid, yellow-brown to dark red-brown or almost opaque, 7-septate, usually straight, or inequilateral, or the lower portion curved, mostly asymmetric with the upper portion broader and shorter, broadly rounded at the ends, constricted at the middle and slightly so or not constricted at the other septa, with two or more longitudinal septa, (24-) 36-37 x 11-16 (-18) jx. On Anemone  Drummondii Wats., Cathedral Lakes (H-2158); Antennaria microphylla Rydb., Big Greek, leg. C.Bertrand (H-2013); Arenarla papillaris Poir. var. nardi- f o l i a , Fish Lake, leg. J.R.Anderson (H-2302); A. formosa Fisch., St. Mary's Pra i r i e , Cranbrook, leg. J.W.Eastham (E-2023); A. obtusiloba (Rydb.) Fern., Mt. Brent, Penticton, leg. J.W.Eastham (H-2215); A. verna var. propinqua Fern., Mt. Cheam, leg. J.K.Henry (H-2217), Mt. Copley, leg. D.Elvidge (H-2216); Draba praealta Greene, leg. W.Taylor, Mt. Waddington (H-2266); Erigeron  acris L. var. asteroides (Andrz.) DC*, Fairmont Hot Springs, leg. J.W. Eastham (H-2205).; E. aureus var. typicus Cronq., Mt. Brent, Penticton, leg. J.W.Eastham (H-2207); E. compositus Pursh., Cathedral Lakes (H-2273); E. compositus Pursh., var. glabratus Macoun, Garibaldi, leg. J.Davidson (H-2208); Linum Lewisii Pursh.,-Windermere, leg. J.W.Eastham (H-2219); Lupinus L y a l l i i Gray, Cathedral Lakes (H-2272); Oxytropis Cusickii Greenm., Cathedral Lakes (H-2271); Pedlcularis bracteosa Benth., Cathedral Lakes H-2036); Phacelia sericea Gray, Cathedral Lakes (H-2149). P. triehostoma Air.) Ces. & de Not. Perithecia 300-500 (-750) x 200-350 jx, sclerotioid, usually rather thickly scattered, somewhat flattaned-spherical, strongly erumpent, often becoming superficial, ostiole indefinite or flattened-papillate, with a few or many setae; asci stout clavate, with a much thickened 138. wall, base claw-like, 160-210 x 35-50jx; spores biseriate, oblong-ellipsoid, 3-septate, light olive-brown, ends broadly rounded, constricted at a l l septa, often with a ve r t i c a l septum in one or two cel l s , 44-60 x 18-25jx. On Hordeum yulgare L., not seen (CPDS 1935, as Ryrenophora teres). P. vulgaris Nlessl (Plate V, fig.14) Perithecia globose or depressed, tomeiitose at base, 100-350 x 100-250 p.; asci stout clavate, wall thickened, base claw-like, 70-120 x 14-19jx; spores biseriate, oblong-to fusoid-ell i p s o i d , ends usually acute but sometimes obtuse, often inequilateral or slightly curved, 3- then 5-septate, constricted aththe central septum, with a vertical septum in the central c e l l s , dark brown, 17.5-26 x 7-10 ji. On Balsamorrhiza sp., Vernon (H-2168); Erigeron spi, Vernon (H-2288); Phacelia  leucophylla Torr., Vernon (E-1941); Liliaceae indet., Duncan (H-2295); dead herbaceous stalks, Penticton (H-2281). The following collections have not been satisfactorily identified to species; descriptions are given as Pleospora spp. P. (Catharinia) sp. On Ledum grpenlandicum Oedr., BurnabyLake, leg. V.C. Brink (H-2070) (Plate V, fig.15): Perithecia erumpent through greyish spots, globose, 200 u diameter, black, membranaceous; asci clavate to ovate, apex thickened, 32-54 x 18-24 u; spores hyaline, 3-4- (5-) septate, one longitudinal septum through most c e l l s , constricted at the septa, 15-21 x 6-7.5 jx» P. (Clathrospora) sp. On Carex praegraoilis Boott., Ely ing U Ranch, Cariboo, leg. J.W.Eastham (H-2298) (Plate V, fig.16): Perithecia black, immersed, visible as black dots through the epidermis, globose, slightly tomentose, 210-240 u diameter, membranaceous; asci clavate, thick-walled, with a claw-l i k e base, 126^ -180 x 36-45 jx\ spores dark brown, 5-septate, constricted at 139. the septa, ellipsoid-oblong, with one longitudinal septum through middle c e l l s , 30-45 x 12-18^1. On Poa rupicola Nash, Sage Pass, leg. T.M.C.Taylor (H-2078) (Plate 7, f i g . 17): Perithecia black, membranaceous, globose, about 180 jx diameter; asci clavate, short-stalked, about 135 x 27 u; spores 8-septate, with l-2nlong-itudinal septa, through most c e l l s , reddish to dark brown, flattened, 30-37.5 x 12-15 x 9-12 jx, P;_ sp. On Agrostis humilis 7asey, Garibaldi, leg. J.Davidson (H-2310) (Plate 7, fig.18): Perithecia black, membranaceous, immersed, globose, 180-250 p diameter; asci broad clavate, short stalked, 120-126 x 48-54 ^ i ; spores very light brown, biseriate, 6-8-septate, with two longitudinal septa, e l l i p s o i d -oblong, upper portion somewhat broader and much shorter than lower, 33-50 x 13-21 jx. On Gaillardia aristate Pursh., 7ernon (H-2312) (Plate 7, fig.19): Perithecia immersed, globose, collapsing, short papillate, black, membranaceous, with radiating brown hyphae at base; asci clavate, short stalked, 90-105 x 13-15 ji; spores light to dark brown, fusoid, flattened on one side, 3-7-septate, constricted at the central septum, with one longitudinal septum through middle c e l l s , 27-30 x 6-7.5 jx. 0 1 1 Oxytropis alpicola (Rydb.) Jones, Sage Pass, leg. T.M.C.Taylor (H-2066) (Plate 7, fig.20): Perithecia black, p a r t i a l l y erumpent, membranaceous* globose-depressed, 300-400 diameter; asci clavate, stalked, 135-180 x 24-30 jx; spores reddish-brown, p a r t i a l l y biseriate, 6-7-septate, some with 10 septa, 1-2 longitudinal septa, none in end cell s , fusoid-inequilateral, 30-36 x 12-15 jx. On Syringa vulgaris L., Duncan (H-2314) (Plate 7, fig.21): Perithecia black, coriaceous, globose, collapsing, papillate ostiole erumpent through 140. epidermis, 330-430 x 230-300 p; asci clavate, 105 x 21 p; spores biseriate, yellow-brown, 3-septate with 1-3 longitudinal septa i n the central c e l l s , constricted at the septa, 21-27 x 10-14 ^ a. P. (Pyrenophora) sp. On Agropyron trachycaulum (Link) Malta, Tenquille Lake, Pemberton, leg. W.Taylor (H-2269) and on Trisetum spieatum (L.) Hicht.* Garibaldi, leg. J.W.Eastham (H-2322)(Plate V, fig.22): Perithecia black, coriaceous, with a greenish tinge, setose about the estiole, tomentose at base, erumpent, globose, 150-350 u diameter; asci clavate, short stalked, thick walled, 114-200 x 27-33 p; spores reddish or yellow-brown, flattened, 7-11-septate, biseriate, becoming uniseriate, 1-3 longitudinal septa, 33-52 x 15-16.5 x 12-13 u. Protoventuria Berl. & Sacc. Perithecia superficial, large, carbonaceous, fragile, globose-depressed, setose, ostiole round, wide; asci oblong to ellipsoid, abruptly narrowed at the base to a short stalk, eight-spored; paraphyses lacking or obsolete; spores uniseptate, constricted, c e l l s subequal, fuliginous. P. Vancouverensis Dear. Perithecia scattered, carbonaceous, globose to conical, b r i s t l y , 120-150 p diameter; bristles r i g i d , acuminate, pungent, 30-85 x 4-6 jx at base; asci fusoid-cylindrical, straight or curved, 45-55 x 14 ^ i ; paraphyses few, longer than asci; spores fuliginous, 2-3-seriate, uniseptate, 2-4-aucleate, upper c e l l wider, 14-15 x 4.5-5jx* On bark of dead Acer sp., Vancouver Island, August, 1916, John Macoun, 1003, not seen (Dearness 1917: 348). Protoventuria sp. (|?late V, fig.23) Perithecia at f i r s t immersed, soon becoming superficial, black, carbonaceous, globose-depressed, about 270 jx 141. diameter, covered with numerous long dark brown septate hyphae, not spiny, of varying lengths; asci oblong, slightly broader near the base, with a claw-like foot, thickened at the apex, curved, 75-90 x 13-15 j i ; paraphyses fi l i f o r m , short and indistinct; spores ligh t brown, uniseptate, upper c e l l broader and shorter* lower c e l l narrower; ell i p s o i d , constricted at the septum, uniseriate above, biseriate below, 18-24 x 7-8 jx. On branches of Lonicera involucratum Banks, Cathedral Lakes (H-2332)• Venturis Ces. & de Not. Perithecia superficial or erumpent, b r i s t l y , membranaceous, ostiolate; asci sessile or short stalked, eight-spored; paraphyses present or lacking; spores oblong or ovoid-ellipsoid, uni- or biseriate, hyaline to yellowish-brown, two-celled. Perithecia immersed, usually remaining so. -Perithecia epiphyllous, grouped around brownish-green spots........... .V. Rumicis Perithecia mostly hypophyllous, grouped or scattered. Spores small, 11-15 x 4-8 ji, upper c e l l with a blunt point; on Pyrus Malus. V. inaequails Spores larger, 14-20 x 5-8jx; both ends broadly rounded; on other species of Pyrus V. pyriha Perithecia superficial, or with bases immersed. Asci small, 35-50 x 7-10.5 jx. On Linnaea .V. Dickiei On Ledum. .... .V. Cassandrae Asci larger, over 50 ji long. Perithedia on spots on dead stalks of Gentiana sp V. atriseda 142. Perithecia scattered oa leaves. Spores greenish-hyaline, 12-14 x 3-5 a .V. m y r t i l l i Spores yellow-brown, (10-) 14-17 x 4-7 ji......V. chlorospora V. atriBeda Rehm (Plate V, fig.24) Perithecia thickly grouped, f i r s t immersed, later bases almost free, black, membranaceous, 96-120 ji; bristles mostly around the ostiole; asci oblong, (37-) 50-60 x 9-12 u; paraphysate; spores biseriate, two-celled, greenish, lower, c e l l shorter and narrower than the upper, (12-) 15-18 x 4-6 u. On stalks of Gentiana calycosa Griseb., Wall Lake, leg. T.M.C.Taylor (H-1933). V. ?Cassandrae Pk. (Plate V", fig.25) Perithecia brown-black, membranaceous, bases immersed on greyish spots on leaves and branches, globose, 45-100 ii diameter, bris t l e s dark brown, fewj 45-60 x 4.5-6 ji; asci oblong to ob-clavate, sessilej bent, paraphysate, 30-48 x 7.5-10 jx\ spores hyaline to yellow, uniseptate, very slightly constricted at the septum, upper c e l l a l i t t l e broader, granular, biseriate, 9-12 x 3 ji» On Ledum groenlandicum Oedr., Burnaby Lake, leg. V.C.Brink, (H-2070). No species of Venturis i s reported on Ledum; this species comes most closely to this collection. V. chlorospora (Ces.) Karst. (Plate V, fig.26)- Perithecia hypophyllous, subglobose, 50-120 p. diameter, bases immersed or superficial, bristles 40-50 x 4^i; asci cylindrical-clavate, aparaphysate, (37-) 45-70 x 9-14 ix\ spores uniseriate above, biseriate below, two-celled, lower c e l l tapering, yellow-brown, (10-) 14-17 x 4-7 u. Onleaves of Salix sp., U.B.C. (H-1967)• V. Dickiei (B. & Br.) de Not. (Plate V, fig.27) Perithecia crowded in groups, superficial on a filamentous subiculum, epiphyllous, subglobose, 75-90 p. diameter; bristles around the apex, 40-80 ji long; asci sessile, 143. cylindrical-clavate, paraphysate, 35-50 x 7-10.5 u ; spores biseriate, two-celled, olive-green, 10-14 x 3-4.5 jx. On leaves of Linnaea borealis L. var. americana (Forbes) Render, Canoe, leg. G.E.Woolliams (H-158?). V. inaequalis (Cke.) Aderh. Perithecia immersed, grouped, usually hypo-phyllous, globose, 90-160 p. diameter, with or without bristles; asci oblong, 40-70 x 9-12 j i ; spores yellow-green, unequally two-celled, upper c e l l shorter and broader with a blunt point, lower elongated, end rounded, uni-seriate above, biseriate below, 11-15 x 4-8 jx. On Pyrus Malus L., common throughout the apple-growing region of the province; the conidial stage, Fusicladium dendriticum (Wallr.) Fckl., causing leaf and fr u i t scab during the summer. (S-14, S-49; CPDS 1926, 1928, 1929, 1930, 1931, 1932, 1933, 1934, 1935, 1936, 1937, 1938, 1939, 1940). V. m y r t i l l i Cke. (Plate 7, fig.28) Perithecia amphigenous, scattered or gregarious, superficial, small, 90 u diameter, bristles long or short, sometimes ones branched; asci oblong, 30-50 x 9-14 u ; spores biseriate, ovoid-oblong, two-celled, not constricted, greenish-hyaline, 12-14 x 3-5 jx» On Cassiope Stellariana DC., BeaveryMtn., Hope, leg. F.Perry (H-1936). 7. pyrina Aderh. (Plate 7, fig.29) Perithecia mostly hypophyllous, grouped or scattered, immersed, globose, 120-210 jx diameter, glabrous or with a few bristles around the ostiole; asci oblong, 40-70 x 9-12 ji; spores uniseriate above, biseriate or crowded below, yellow-brown, two-called, upper c e l l larger and broader, ends rounded, 12-20 x 5-8 jx* Common- on Pyrus communis L., throughout the province; U.B.C. (H-1932), Sidney, leg. W.Jones (H-471). The conidial stage, Fusicladium pyrinum (Lib.) Fckl., forms brown leaf and fr u i t spots during the summer. (CPDS 1926, 1930, 1931, 1935, 1936, 1937, 144. 1938, 1939, 1940). 7. Rumicis (Desm.) Wint. (Plate 7, fig.30) Perithecia in small groups around a brownish, green, or purple spot, epiphyllous, immersed, globose, 100-130 jx diameter* ostiole ringed by divergent, deep brown bristles; asci oblong or clavate,• short stalked, 45-60 x 12-14jx; spores biseriate, ovate-oblong, ends rounded, two-celled, yellowish-brown, 12-15 x 4-7.5 yu On leaves of Rumex Acetosella L., Mt. Seymour (H-1934); Bennett, leg. D.A. Mitchell (H-1935). 7enturia sp. The following four collections could not be determined to species nor could they be related to any described species. Perithecia are variable; asci large, 60-90 x (7-) 12-23jx; spores (12-)15-23 x 4.5-9 JX. On Aplopappus Brandegei Gray, Cathedral Lakes (H-1937) (Plate 7, fig.31): Perithecia large, conical, 200-250 jx diameter, with short, black bristles above and long, brown, septate mycelium below; asci elongated, 60-90 (-120) x 12-15 pi paraphysate; spores greyish-brown, two-celled, upper c e l l smaller, cylindrical, ends rounded, biseriate, f i n a l l y uniseriate, 18-23 x 7-8 yi. On Astragalus Macounii Rydb., Cathedral Lakes (H-1938) (Plate 7, fig.32): Perithecia globose, 130-200 u diameter, bristled above, mycelial threads at base; asci cylindrical, sessile, 60-75 x 7-8 jx\ spores e l l i p s o i d , yellowish, two-celled, upper c e l l larger, (12-) 15-18 x 4.5-7 ya. On Penstemon e l l i p t i c u s Coult. & Fisher, Mount Rowe, leg. T.M.C.Taylor (H-1939) (Plate V, fig.33): Perithecia globose, 150-200 jx diameter, ostiole plane, covered with short spines, 45-60 x 3yi with a bulbous base; asci obclavate, short stalked, paraphysate, 60-90 x 15-23 jx\ spores hyaline 145, to lig h t brown, two-celled, upper c e l l broader, uniseriate above, crowded or biseriate below, 15-21 x 6-7.5 jx* On Phacelia leucophylla Torr., Vernon (H-1940) (Plate V, fig,34): Peri-thecia globose, 130 u diameter, covered with s t i f f , brown bristles, 84 x 4-5 j i , ends obtuse; asci oblong-clavate, short stalked, paraphysate, 60-64 x 16-17 jx; spores grey-brown, biseriate, two-celled, constricted at septum, 15-23 x 7-9 jx; spore wall much darker than interior of spore. 18. Massariaceae Perithecia without stroma, immersed and remaining covered, with only the small ostiole breaking through the covering layer of plant tissues; carbonaceous or coriaceous, thick; asci clavate or cylindrical, eight-spored; spores mostly surrounded by a gelatinous envelope, one- to several-celled or muriform, hyaline or brown; paraphyses present. Spores several-celled, hyaline..*.. Massarina Spores several-celled, brown. .-. .Massaria Massaria de Not. Perithecia under the epidermis and remaining covered, globose, with only the short, blunt ostiole erumpent, black, coriaceous; asci clavate, large, eight-spored; spores e l l i p s o i d , fusiform, or cylindrical, several-celled, hyaline, with a gelatinous covering} paraphyses present. M.macrotheca (Rostr.) J.Lind (Plate V, fig.35) Perithecia globose-depressed, under the epidermis, large, 200-270 ^1 diameter, black, coriaceous; asci cylindrical to obclavate, short stalked, thick-walled, 130-180 x 20-39 (-51) jx; 146. paraphyses indistinct; spores irregular-triseriate, at f i r s t hyaline, one-septate, with four cubical guttules, at maturity three-septate, lig h t brown, cylindrical, obtusely rounded at the ends, with a narrow gelatinous envelope, 36-42 x 12-15jx* On Carey sp,, Cathedral Lakes (H-1963). Massarina Sacc. As Massaria, but spores remaining hyaline. M. Dryadis Rostr. (Plate 7, fig.36) Perithecia scattered,' epiphyllous, globose-depressed, black, small; asci broad-cylindrical, 90-135 x 32-38 (-45) jx, paraphysate, fi v e - to eight-spored; spores biseriate, three-septate, hyaline, granular, oblong, constricted at the septa, surrounded by a broad gelatinous envelope, 33-42 x 15-20 j i . On Dryas Drufflrnondii Rich., Field, leg. J.M.Fogg (H-1966). No measurements of spores were given in any descriptions seen. ? Massarina ap. (Plate V, fig.37) Perithecia black, membranaceous-coriaceous, superficial, globose-flattened, papillate, 300-350 jx diameter, covered with numerous long brown hairs, massed and tangled; asci clavate, short stalked, eight-spored, thickened at the apex, 110-135 x 15-17 jx\ paraphyses numerous; spores hyaline to greenish, granular, long two-celled, becoming four-celled, fusoid, surrounded by a gelatinous coating, 30-39 x 7.5-10 jx* On Pedicularia paddoensis Pennel, Sage Pass, 7500', leg. T.M.C. Taylor (H-2335)• This collection has the hairy depressed perithecium of a Herpotrichia; the spores in their two-celled stage are quite similar to those of Didymella. Tt i s placed in Massarina because of the broad gel-atinous envelope surrounding the spores, and the great similarity between i t and M. eburnea (Tul.) Sacc?, the differences between the two being the hairy perithecia and herbaceous habit of this species. 147. 19. Gnomoniaceae Without stroma but in some cases with a clypeus; perithecia immersed, free under the epidermis, with the long, beak-like ostiole emergent; membranaceous or coriaceous; asci usually thickened at the apex, with a refractive ring, cylindrical, clavate, or fusoid; spores hyaline, one- to several-celled, with or without appendages; paraphyses mostly lacking. Spores one-celled. Perithecia glabrous. .Gnomoniella Perithecia pilose .Glcmerella Spores two-celled. Gnomonia Glomerella Schrenk & Spauld. Perithecia cespitose, membranaceous, black-brown, beaked, lighter at the apex, pilose, seated on or p a r t i a l l y immersed in a stroma; asci sessile, aparaphysate, clavate; spores eight, hyaline, oblong, continuous, slightly curved, ellipsoid, subbiseriate. G. cingulata (Ston.) Schrenk & Spauld. Perithecia cespitose, surrounded by subiculum of loose hyphae, black-brown, membranaceous, 250-330 jx long, 150 jx wide, ostiole as a short constricted beak, conspicuous brown mycelium around the ostiole; asci aparaphysate, clavate, sessile, 64 x 14 n, eight-spored; spores subbiseriate, hyaline, e l l i p t i c a l , slightly curved, usually with one guttule i n the centre, 20-28 x 5-7 yi. On Pyrus Malus L., not seen (CPDS 1951). Gnomonia Ces. & de Not. Stroma lacking, perithecia immersed with the elongated ostiole erumpent, 148. globose to globose-depressed, membranaceous to coriaceous, black; asci e l l i p s o i d to fusoid, thickened at the apex, with a refractive ring, eight-spored; aparaphysate; spores elongated, hyaline, two-celled. Asci large, 54-105 x 12-18 jx. Spores 24-33 ji long. On stems, spores 7-10 jx wide .G. depressula On leaves, spores 4.5-6jx wide.. .........G. Caryae Spores 21-24 jx long. B . potentlllae Asci smaller, less than 50 jx long. Ostiole elongated, -usually longer than the diameter of the perithecium. Asci 45-50 x 7-8 jx .G. veneta Asci 30-40 (-45) x 6-9 jx. G. set ace a Ostiole shorter, broader, length not reaching the diameter of the perithecium. »G. Vepris G. Caryae Fr. A.Wolf (Plate V, fig.38) Perithecia immersed, more or less gregarious, depressedyglobose, 200-300 jx wide, hypophyllous, ostiole broad-cylindrical, long, 300-400 x 35 jx, curved; asci eight-spored, obovate, 54-75 x 12-18 u; spores hyaline, 4-guttulate, equally two-celled, 24-33 x 4.5-6 j i . On leaves of Alnus oregona Nutt., U.B.C. (H-1959) • G. depressula Karst. (folate V, fig.39) Perithecia scattered or gregarious, immersed, globose-collapsing, black, 450-530^1 diameter, ostioles erumpent, conoid, straight, broad, mostly shorter than perithecia; asci sessile, fusoid, eight-spored, 84-110 x 15-18 jx\ spores obliquely biseriate, fusoid-oblong, slightly curved, 2-4-guttulate, two-celled, slightly constricted at 149. the septum, hyaline, 24-32 » 7-10 yi. On dead stems of Rubus parviflorus Nutt., U.B.C. (H-1973). G. potentillae sp.nov. (Plate V* fig.41, Plate VI, fig.45) Perithecia immersed, black, coriaceous-membranaceous, globose, 330-400 jx diameter, ostiole erumpent, straight or curved, 200 x 60 u; asci sessile or with a short, delicate stalk, thickened and with a refractive ring at the apex, fusoid-clavate, eight-spored, 60-70 x 13-15 jx; spores hyaline, equally two-celled, not constricted at the septum, biseriate or crowded-oblique, four-guttulate, fusoid, inequilateral to slightly curved, 21-24 x 6-7 jx» Type: Herbarium of the University of Bri t i s h Columbia, on petioles of Potentilla palustris (L.) Scop., Stanley Park, Vancouver, B.C., March 29, 1952, leg. M.E.Barr (H-1974). G». potentillae spinov. Peritheciis immersis, a t r i s , coriaceis vel membranaceis, globulosis, laxe gregariis, 330-400 jx; cum rostro elongato, recto vel curvulo, 200 x 60 jx; ascis octosporis, sessilibus, refractivo annulo praebitis et membrana incrassata, fusoideis vel clavatis, 60-70 x 13-15 jx; sporis hyalinis, fusoideis, inequilaterilibus vel paulum curvatis, medio septatis, ad septum haud constrictis, 4-guttulatis, b i s e r i a t i s to oblique gregariis, 21-24 x 6-7 jx; aparaphysatis. Specimen typiCum in University of British Columbia herbario conservatum, in petiolis Potentillae palustris (L.) Scop., prope locum dictum "Stanley Park, Vancouver" in Br i t i s h Columbia, l e g i t M.E. Barr (H-1974), March 29, 1952. G. setacea (Pers.) Ces.& de Not. (Plate V, fig.40) Perithecia mostly 150. hypophyllous, scattered, immersed, globose, black, 200-400 jx diameter, ostiole long, slender, often curved,up to twice as long as the diameter of the perithecium; asci oblong-clavate, or fusoid, contracted into a short stalk, four- to eight-spored, (15-) 24-40 (-45) x 6-9 jx; spores fasciculate-crowded, fusoid or cylindrical, with or without a b r i s t l e -like appendage at each end, straight or slightly curved, two-celled, not constricted at the septum, hyaline, 12-16 x 1.5-2 u. On leaves of Acer  macrophyllum Pursh., Silver Creek, (H-1946), U.B.C. (H-1954, H-1958); Alnus oregona Hutt., Stanley Park (H-1953), U.B.C. (H-1959). G. veneta (Sacc. & Speg.) KLebahn Perithecia globose, gregarious, innate-erumpent, collapsing, 200-300^1 diameter* black, ostiole elongated, straight or curved, as long as or exceeding the diameter of the perithecium; asci fusoid-clavate* apices rounded, 45-50 x 7-8 jx, eight-spored; spores elonga^e-fusoid to subclavate, unequally two-celled, lower c e l l longer than the upper, hyaline, minutely multiguttulate, appendages at the ends, 15 x 3.5-4 jx» On leaves of Platanus occidentalis L., Victoria, leg. P.J.Salisbury (¥-2356), imperfedt stage; Platanus sp., Sidney, leg. W.Jones (H-797, CPDS 1934). »G. Vepris Mout. (Plate V, fig.42) Perithecia immersed, globose, 200-250 jx diameter, ostiole not exceeding the diameter of the perithecium in length, erumpent; asci oblong-clavate, eight-spored, 27-35 x 7-9 u; spores two-celled, not constricted, cells with minute guttules, at f i r s t appendaged, 6-12 x 1.5-2.5 jx. On leaves of Rubus parviflorus Nutt., U.B.C. (H-1922). Gnomoniella Sacc. Perithecia membranaceous-coriaceous, subglobose, immersed-erumpent; ostiole beaked, central or l a t e r a l ; asci cylindrical-clavate, eight-spored, 151 aparaphysate, with refractive ring at the apex; spores continuous, hyaline, ovoid to oblong, rarely short f i l i f o r m . Subgenus Mamianla: perithecia grouped under a black pseudostroma; spores ovoid. G. Coryli (Batsch ex Fr.) Sacc. (Mamiania Coryli Ges. & de Not.) (Plate V, fig.43) Perithecia hypophyllous, separate, arranged in a c i r c l e , immersed in leaf tissues, covered on both sides by the, blackened and inflated epidermis, depressed-globose, about 300 jx diameter, ostiole stout, cylindrical, about equal in length to the diameJter of the perithecium, erumpent through a minute white disk; asci clavate, short-stalked, 36-40 x 7 yu, eight-spored; spores biseriate, obovoid, one-celled, subhyaline, granular, 7 x 3 jx* Few of the collections seen showed mature asci; in many the perithecia were f i l l e d with globose hyaline c e l l s . On Corylus  californica (A.DC.) Rose, Revelstoke, leg. S.Brown-John (H-1949), Boat Encampment, Big Bend Highway, leg. J.W.Eastham, det. I.L.Conners (0-7519); 0. rostrata Ait., Aleza Lake, leg. J.W.Eastham (H-l951), Vancouver, collected and determined hir H.T.Gussow (0 unnumbered, Aug.17, 1916); Corylus sp., Hope, leg. M.J.Short, det. D.B.O.Savile (H-1950, V-5722), Kersley, leg. G.E.Woolli&ns (H-1669). 20. Clypeosphaeriaeeae Perithecia immersed, without a true stroma, but with a pseudostroma which forms"a sharply delimited, thin, black clypeus of fungus hyphae and epidermal c e l l s , usually only on the Upper surface; ostiole short conical or papillate to long beak-like; breaking through the shield; perithecia mostly carbonaceous-coriaceous; paraphyses usually lacking; asci cylindrical 152. or clavate, eight-spored; spores one- to several-celled, muriform or filiform, hyaline or colored. Linospora Fckl. Perithecia single or several covered by the f l a t , black pseudostroma, coriaceous, with a more or less elongated, beak«like ostiole; asci c y l i n -dr i c a l , delicate, eight-spored; spores f i l i f o r m , hyaline or light yellow. L. ?insularls Johans. (Plate V, fig.44) Perithecia few to numerous, innate in the leaf, depressed-globose to oblong, 330-450 jx diameter, beak l a t e r a l , 200-370 jx long; pseudostroma distinct; asci cylindrical, sharply attenuated to the base, eight-spored, 135-200 x 7—9 jx; spores lying parallel, f i l i f o r m , one-septate, 100-120 x 3 j i . On leaf of Salix sp,, U.B.C. (B>1967). This collection has larger asci (250-300 x 7.5-10 jx) and septate spores (225-x 1.5 ii) than any recorded. It most nearly f i t s L. insularis in size and in the lat e r a l position of the curved beak» and may be a large variety of this species. Linospora sp. Pseudostroma acattered along veins of leaf, irregular-rect-angular, epiphylloua, at f i r s t only the margin blackened, later the entire clypeus; peritheciaimmature. On Populus balsamifera L«, Saanichton, leg. W.Jones, det. J.E.Bier (H-1965, V-2068). 21. Valsaceae Stromata developed, black, formed in and more or less altering the substrate, f i n a l l y erumpent with irregular border or often distinguished only by a black marginal line or sharply delimited, conical, papillate, or 153. hemispherical; perithecia immersed in the stroma or occasionally seated in the substrate, or with only the ostiole embedded in the hemispherical stroma, formed under the surface of 1ke substrate and generally remaining covered, often circinately arranged, black, coriaceous; asci cylindrical or clavate, long stalked; paraphyses present or lacking; spores one- to several celled, or muriform, hyaline or colored.. Spores one-celled, hyaline to brownish. Ostioles di s t i n c t l y sulcate, dark marginal zone present......Eutypella Ostioles not distinctly sulcata. Ectostroma distinct, conical} marginal zone lacking.........Valsa No eetostroma formed; dark marginal zone usually present.......... Cryptosphasria Spores more than one-celled,hyaline to brown. Spores two-celled, hyaline. Spores unequally two-celled............................Apioporthe Spores equally two-celled. Blackened zones present i n the substrate...........Diaporthe Blackened zones lacking. .Cryptodiaporthe Spores muriform, yellowish, becoming dark brown..............ffenestella Apioporthe Hohn. (Emend. Hfehmeyer, 1933: 219). Perithecia immersed in the substrate, usually clustered; entostromatic development scanty or variously developed; ectostrcmata also various; tissues above the perithecia sometimes blackened, but no definite marginal zones within the substrate; asci clavate, with a refractive sing i n the apex, stalks evanescent; spores hyaline, unequally two-celled, fusoid to pyriform, commonly tapered toward one end, which contains the smaller c e l l . 154© Ao veprls (De Lacr.) Wehm. (Plate V, fig»45) Usually forming longitudinally elongate pustulate ruptures of the periderm with small central blackened disks containing the scarcely erumpent ostioles; no blackened zones within the substrate; perithecia 150-300 x 160-200 jit usually i n definite clusters; stromatic development variable; asci clavate, 30-40 x 6-8 p.; spores o b l i -quely biseriate, e l l i p s o i d , narrowed toward one end, often somewhat curved, unequally two-celled, often constricted at the septum, 6-9 (-10) x 2-2.5 ji, and often with a short, b r i s t l e - l i k e , hyaline appendage at each end© On stems of Rubus macropetalus Dougl., Oowlchan Bay (B>1960)© Cryptodlaporthe Petrak (Emend. Wehmeyer, 1933: 189) Perithecia Immersed in .the bark, more or less Irregularly scattered or in definite clusters, but usually with convergent ostiolar necks which are erumpent through the periderm or through variously formed ectostromata; ectostromata scanty or as conic to pulvinate erumpent disks; entostromata very scanty or as a rich development of hyphae about the perithecia; no blackened marginal zones within the substrate; asci clavate, base tapering, evanescent, refractive ring i n the apex; spores hyaline, two-celled, e l l i p s o i d to fusoid, straight or curved and often appendaged. Spores not over 11 p in length..................................C. Macounii Spores over 1 1 ^ i I 1 length................. C o salicina C. Macounii (Dear.) Wehm. On the surface as minute papillate pustules, 0.1-, 0.2 mm. in diameter, through which the minute ostioles are barely erumpent and visible only with a lens; no blackening of the substrate; perithecia small, spherical to flattened, with rather thick walls of heavily blackened parenchyma, 150-250 x 120-160 pt chBtered in groups of 1-6 on the surface 155* of the bark just beneath the periderm; asci narrow-clavate, 30-35 x 4-5 jx; spores biseriate, oblong-ellipsoid, 2-celled, hyaline, not constricted at the septum,8-10 x 1,5-2 jx* On Spiraea Menziesii Hook,, Vancouver Island, May, 1915, J.Macoun. Not seen. This species was described by De amass (1916j 100) as Diaporthe Macounii and transferred to Cryptodiaporthe by Wehmeyer (1933: 191). C. salicina (Burr.) Wehm. (Plate V, fig.46) Visible on the surface as numerous, minute, conic, pustules consisting of 1-8 ostioles, usually separately erumpentj perithecia spherical or flattened, 300-480 x 280-400 yi, walls membranaceous, 18-27 jx thick, within bark cortex; ectostromata formed on surface and obliterated by the erumpent ostioles; no blackened zones; asci clavate, 45-70 x 9-15 u; spores biseriate, e l l i p s o i d t o i n -equilateral, blunt at the ends, 2-celled, hyaline, not constricted at the septum, 15-20 x (3.5#i) 4.5-7.5 u. On twigs of Salix sp», Sidney, leg . J.Macoun (QM«?245), determined as Diaporthe s a i l c e l l a by J.Dearness, but similar to E l l i s and Everhart, N.A.F. 2745; on Salix sp., Fraser Valley, leg. G.E.W.Clarke (0-7184). Cryptosphaeria Nitschke (non Grev.) Stroma effused or wanting, not limited by circumscribing l i n e ; peri-thecia iranersed in bark, scattered; ostioles erumpent; asci eight-spored, without paraphyses; spores allantoid, hyaline. C. populina (Pers.) Sacc. (Plate V, fig.47) Stromata effused, raised as a broad, f l a t b l i s t e r , dark marginal zone present; perithecia scattered, immersed, large; ostioles erumpent, obscurely sulcata; asci narrow-clavate, 156. p.sp. 30-45 x 5-8 jxt narrowed above and tapering below into a long stalk; spores biseriate, allanteid, yellowish, (7-) 8-12 x l . 5 - 2 ^ i . On Populus sp., Summerland, leg, G.E.Woolliams, dot. I.L.Connera (0-7862). Dlaporthe Nit. (Emend. Wehmeyer, 1933: 14). Perithecia formed in the substrate, erumpent, scattered singly or clustered, marginal zone present; asci clavate to olavate-cylindrical, with a refractive ring at the apex; paraphyses broad, band-like, evan-escent; spores fusoid-ellipsoid to cylindrical, straight, inequilateral, or curved, 2-celled, hyaline, sometimes appendaged, biaoriate to uni-seriate. On herbaceous stems, Entostromata sharply margined by a blackened line or ridge, visible on the surface.............a,.... •eDa pardolata Entostromata not strongly margined as above. .P. A r c t i i On woody stems; dorsal blackening usually concealed by the periderm. Spores not over 4 u i n diameter................................De eres DJ A r c t i i (Lasch.) Nit. (Plate V, fig.48) Entostromata normally widely effuse and indefinitely outlined; appearing on the surface as blackened widely effuse or confluent areas oi|as numerous conic or spine-like ostioles erumpent singly or i n loose groups; dorsal blackened zones usually developed on the bark surface; ostioles conic, oylindric, or spine-like; ventral zone present or absent; peritheoia spherical or somewhat flattened, 280-480 x 160^320 i i , scattered or crowded; asci clavate, with a refractive ring i n Spores over 6,5 i i i n diameter D. columbiensis 157, the apex, (40-) 47-60 x 7-10 jijspores biseriate, fusoid-ellipsoid, straight or more or less inequilateral or curved, two-celled (often ta r d i l y septate)* hyaline, constricted at the septum when mature, (11-0 12-15 (-17) x 2.5-4^1, On stalks of Arnica l a t i f o l i a Bongo, Cathedral Lakes (H-1972) * Do columbiensis E l l . & Ev. (Plate V, fig*49) Bearcely visible on the surface as short, stout ostioles, erumpent singly or in small loose groups through sli g h t l y pustulate, ruptures of the periderm or appearing as small slightly blackened patches, 1-5 mm» in diameter, bounded by marginal lines; entostromata strongly differentiated and pustulate-effused; dorsal blackened gones dipping through the bark into the wood; perithecia large, 480-650 x 480-560^1, scattered singly or i n small groups; asci davate-eylindrical, with a refractive ring in the apex, 100-122 x 11-19 jx; spores irregularly biseriate to uniseriate, oblong-ellipsoid, blunt, two-celled, hyaline, constricted at the septum, 16-20 (-22) x 7-9 ^a. Original host given as unknown ( E l l i s and Everhart, 1890: 233); cotype (OM-32)* Hastings, collo J .Macoun, Apr i l 11, 1889 i s labelled "on dead aspen". Reported by Dearness (1916: 100) on Nuttallia oeraslformis T.& G*, Victoria, A p r i l , 1915© Do eres Nit. (Plate VI, figol) Appearing on the surface as small pustulate ruptures or angular perforations of the periderm, often exposing the blackened surface of the bark or ectostromata; ostioles short-cylindric to somewhat elongated, erumpent singly or i n small loose clusters; on decorticated twigs as widely effuse, blackened areas with numerous erumpent ostioles; entostromata mostly evenly effuse, surface of bark usually blackened; ventral zones always present at the extreme margins of the fr u i t i n g areas* 158o usually more or less complete beneath; numerous small conic or pulvinate ectostromata formed on the surface of the bark; perithecia spherical or flattened, 240-800 x 160-500^1, scattered singly, irregularly crowded, or grouped, separately or collectively erumpent; asci clavate, with a re-fractive ring in the apex, 40-60 x 5-8 ji; spores biseriate, hyaline, long-narrow-fusoid, or often inequilateral, one-celled when young and immature, becoming broader* two-celled, fusoid, constricted at%the septum, 9*5-15 x 2,5-4, ji at maturity. On Acer sp., Duncan (H-1957), spores 15 x 3-4 jx\ Populus ?trlchooarpa T.& G., Surrey, leg. T.G.Atkinson (E-1858), spores 17 x (1.5-) 3 ji; Salix babylonica L.> North Vancouver, leg. S.BrownrJohn, det. L.E.Wehmeyer (H-l927), spores 13-15 x 2.5-4 yi© These three hosts have not been previously reported in North itaerica» D. pardolata (Mont.) Fckl© (Plate VI, fig.2) Appearing on the surface as sharply outlined entostromatic areas with a marginal blackened line or ridge where the ventral zone abuts upon the surface; entostromatic areas limited in extent (1-7 mm.), confluent, or more widely effuse, margin even or, more usually, irregularly lobed; surface of substratum blackened heavily, only slightly, or not at a l l ; perithecia spherical or somewhat flattened, 160-480 x 120-300^1, scattered singly or occasionally in small groups of 2-3; ostioles short-cylindric to conic, slightly erumpent; ventral zone definite i n wood; asci clavate, 40-55 x 6-8 yi; spores biseriats, fusoid-el l i p s o i d , two-celled, hyaline, slightly constricted at the septum, straight or sometimes inequilateral, or somewhat curved, 9-15 x 2.5-4ji* On Bpilobium  angustifolium L., U.B.C. (H-1947); spores 11-12 x 2.5-3.5yu© 159, Eutypella flit. Stroma effuse or Isolated; perithecia clustered and collectively erumpent; ectostrema limited i n development, usually in isolated patches; entostroma often well developed end pustulate, surrounded by a dark mar** ginal zone; ostioles sulcate; asci eight-spored; 3pores biseriate, allantoid one-celled, yellowish to brownish-hyaline* E. stellulata (Fr.), Sacc* (Plate VI, fig.3) Stromata obtusely conical or subspherical, rarely subeffused, lr-2 mm, across; perithecia few or numerous in a stroma, subspherical or angular from mutual pressure, small, necks converging; ostioles short and small or elongated, rough sulcate-c l e f t , 3-5-sided, connate; asci cylindrical-clavate, p.sp.. 40-50 z 5-6 ji\ spores crowded or subbiseiiate, allantoid, yellowish, 7-12 x 1.5-2 u. On dead bark of Alnua oregona Nutt., U.B.C. (H-1829); on dead bark of Alnus sp., l e g . J .Macoun, det. J.Dearness, Vancouver Island (QM unnumbered, 1912); Sidney (0M unnumbered, Sept.13, 1913, 0M«*36); Betula oceidentalis Hook., Quesnel, leg* M.K.Nobles (E-2324); Populus sp.* Sidney, leg. J.Macoun (OM-38). Fenastella Tul. Stromata and perithecia as in Valsa; asci cylindrical, four- to eight-spored; spores uniseriate, oblong or e l l i p t i c a l , muriform, yellow-brown. F. prlnceps Tul. (Plate VI, fig*4) Stromata orbicular or e l l i p t i c a l at base, lenticular, sunk in the parenchyma of the bark, with the epidermis slightly pustulate-elevated over i t , consisting of brown, floccose matter; 160*. perithecia 3-14 i n a stroma, crowded and mostly angular from pressure, collapsing when dry, black, about 500^1 diameter, with short-cylindrical, perforated ostioles, united i n a roundish or lanceolate, erumpent disk; asci cylindrical, short-stipitate, 150-260 x 18-27 jx; with numerous para-physes; spores uniseriate, oblong-ellipsoid, constricted in the middle, closely multi septate and muriform, golden-yellow, becoming brown, with a hyaline, papillate c e l l at each end, 25-42 (-70) z 12-21 jx» On bark of Prunus demissa (NuttiJ. D.Dietr., Stanley Park, Vancouver (H-1956); on dead bark, Victoria, leg* J .Macoun, det. J.Dearness (OM-17), Comox (0M-68)o Valsa Fries Stromata isolated; perithecia clustered in the unaltered bark tissues beneath a distinct conical ectostroma; no marginal zone present; asci eight-spored; spores allantoid, one-celled, hyaline* On coniferous hosts; asci small, (18-) 25-30 JX long. ..........V* P i n l On deciduous hosts; asci larger, over 30 ji. i n length* Ectostromatic disk white* Spores small, 7-9 long............ ..............*Vo nivea Spores longer, 9 ^ i and over. Perithecial necks short, blunt; asci with truncate apices..•..• ........................ .V. sp. Perithecial necks longer, the length of the perithecium; asci with apices narrowed and rounded* Spores 9-12 (-15)x 2-3 jx; stroma whitish within........ ..........................................V* leucostoma Sporss 13.5-24 x 3-5 u; stroma brown within.»V. amblens 7 Ectostromatic disk brown.... , • V. cer atophora 161© 7© ambiens (Pers©) Fr© (Plate 71, fig.5) Stromata numerous, 1,5-3 mm, broad, pustulate-prominent; perithecia 4-20, circinate, necks long, slender, ostioles erumpent around the small, whitish disk; asci p.sp, 40-55 x 12-15 jxy spores irregular, allantoid, hyaline, obtuse, 14-24 x 3.5yuo On bark of Pyrus Malus L., Sidney, leg. J.Macoun, det. J, Bearness (OM-202)© Dearness considers this an atypical form, with i t s narrower asci (7.5-10 jx wide) and smaller spores (13.5-16,5 x 3yi)© 7. ceratophora Tul© (Plate 71, fig»6) Stromata scattered, depressed-hemispherical to conical, erumpent; perithecia 5-20 in a stroma, crowded, necks long, ostioles erumpent around the brown disk; asci nerrow-clavate, (24-) 32-40 x 4-7 jx; spores biseriate, allantoid, slightly curved, hyaline, 6- 9 (-10) x l<,5-2 jx* On Betula sp., Hastings, leg© J.Macoun (0M-34ti); Rubus sp,,. Vancouver Island, leg© J .Macoun, det© J.Dearness (OM-19)© 7© leucostoma (Pers©) Fr© (Plate 7I» fig©7) Stromata scattered, whitish insidej disk erumpent through transverse cracks in the bark, white, dotted with black ostioles; necks long; asci fusoid-clavate, 35r45 (-57) z7»9ji; nearly sessile; spores biseriate, allantoid, hyaline, 9-12 (-15) x l©5-3jx* 0 1 1 Fyms Malus L©, Sidney, leg, J .Macoun, det, J.Dearne3s (OM-37); on dead wood, Ccmox, leg, J,Macoun (OM-73); Prunus persioa (L.) Stokes, Sandwick, leg. W.R.Foster, det. W.Jones (E -446) ; on nectarine (GPDS 1945)© 7© nivea (Hoff©) Fr© Stromata scutellate, white inside, disk erumpent, xvhite, truncate; perithecia circinate or irregular, 4-10 in a stroma, small; asci clavate, 35-45 x 5-6 u, four- or eight-spored; spores allantoid, hyaline, 7- 9 x 1.25-1,5jx* Conidial stage (Cytospora nivea Sacc©.)..in centre of Btroma, spores allantoid, hyaline* 5-7 x X jxB On Populus sp,, Cariboo, leg© 162. J.Bancroft (H-1948); perithecia in this collection immature. 7. P i n i (Alb. & Schw.) Fr. (Opiate 71, fig.8) Stromata scattered or subgregarious, hemispherical, 1-2.5 mm. diameter, covered by the elevated epidermis which i s ruptured by the closely packed, short ostiolas* forming a f l a t black disk; perithecia small, numerous, 20-30 in a stroma, closely packed; asci narrow-clavate, sessile, 18-30 x 4.5-6ya; spores allantoid, hyaline, irregular, 6-9 x l - l « 5 ^ t . On Pseudotsuga taxi f o l i a (Lam.) B r i t t , , Cowlchan.Lake, leg* LMounce, det* I.L.Cdnners (0-6098). 7. sp. (Plats 71, fig . 9 ) Stromata scattered, rounded; perithecia circinate, with short necks and ostioles erumpent through a whitish disk; asci sessile, fusoid with a truncate apex, 30-36 x 7-9 jx; 3pores allantoid, hyaline, curved or straight, 10.5-21 x 1.5-2 ji* On dead stumps of Betula occidentelis Hook., Summerland, leg. G.E.Woolliams (0-3612, 0-3625). 7* sp* Oh peach, 7ancouver Island, not seen (CPDS 1947)» 22. Melanconidaceae Stromata round, sharply delimited, conical or cushion-shaped, sunken; perithecia remaining covered, with only the ostiolar layer erumpent, cor-iaceous; asci cylindrical or clavate, eight-spored; paraphyses present; 3pores one- to several-celled, hyaline or colored. Melanconis Tul. Pustulate-erumpent through the periderm by a white, grey or yellow-green ectostroma; perithecia circinate in baric, in some cases surrounded 163. by entostromatic mycelium; blackened zones occasionally present; asci clav? ate, wall thickened at apex; paraphyses broad-bandlike, evanescent; spores b i - to uniseriate, two-celled, hyaline or brown, fusoid, e l l i p s o i d or cylindrical, with or without appendages. -Appendages elongate, as long as or longer than the spores; spores 8-13 u in diameter*.. ..<> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ~ . . . M . thelebola 7 Appendages shorter, spinelike or caplike, often evanescent; spores' 4-8jx in diameter.o . . . . . . . . «M» alni M . alni Tul. (Plate VI, fig.10) On the surface as rai8ed circular f l a t -conical pustules 1.5-2,5 mm. diameter, with central white to yellowish disk, surrounded by the punctate ostioles; perithecia spherical to f l a t -tened, 350-450 x 300-400 jxs circinate in the unaltered bark cortex; asci fusoid-cylindrical, sessile, 60-80 x 8-13.5 jx; spores irregularly biseriate, fusoid-ellipsoid, two-celled, hyaline, granular, 13-22 x 3»5>7^i; terminal appendages short-cylindric to tapered, 3-7 x 2-4 jx, evanescent. On Alnus  sitohensis (Regel.) Sarg., Daisy Lake, leg. J.S.Boyce, det. J.Dearness (0*767). M . thelebola (Fr.) Sacc. (Plate VI> f i g . l l ) On the surface as scattered conic pustules 1-2.5 mm.diametsr; with central white diak containing 2-12 short stout or conic black ostioles, ectostroma yellowish white, slight or well developed; perithecia 500-800^. diameter, more or less circinate with convergent necks in a swollen area of the bark, with or without a blackened zone; asci clavate, 120-195 x 15-21 jif spores irregularly biseriate, e l l i p s o i d , cylindrical, straight or curved, slightly or not constricted at the septum, two-oelled, hyaline, 24-35 nr 30-42 u long, 8-10 u wide; ! jx long, s - 1 0 jx 164, appendages long, hyaline, Bristle-like when fresh, evanescent in old material; i n age spores tend to become brovm and two- to three-septate. On Alnu3 oregona Nutt., Cowichan Lake, leg. W.G.Ziller (0-26101), U.B.C, leg. C J.Anastaciou (H-1921). This species i s common on the University campus, Haney, and Goldatreem Park on Vancouver Island; cankers are formed on branches and main stem of young alders (Anastaciou 23* Diatrypaceae Stromata effused or discoid, of fungus mycelium, lying beneath the epidermis, later erumpent, the conidial and perithecial stromata separate or, i n Calosphaeria, the perithecial stroma lacking; perithecia sunken in the stroma or seated on the bark (in Calosphaeria), with ostioles erumpent; asci generally thickened at the apex, four- or eight- or many-spored; paraphyses present or lacking; spores mostly one-celled, small, allantoid, hyaline to yellowish or ligh t brown. Perithecia lying free or seated on the inner bark, stroma lacking.. • .Calosphaeria Perithecia immersed in an erumpent-superficial, effused or discoid stroma. Asci eight-spored. • • Diatrype Asci many-spored....... .Diatrype 11 a Calosphaeria Tul. Stroma lacking; perithecia free or seated on the inner bark, scattered or in circinate groups; ostioles more or less elongated; asci clavate, fas-165c, fasciculate, sessile or stalkad; mostly eight-spored; paraphyses longer than asci, stout, evanescent; spores small, allantoid, hyaline, one-celled. C* prineep3 Tul. (Plate 71, fig.12) Perithecia on the inner bark in orbicular or e l l i p t i c a l groups, crowded, globose, smooth, shining; necks long, de-cumbent, cylindrical, erumpent; asci clavate, long-sstelked, eight-spored, p.3p. 18-26 x 4-6 yi; paraphyses long; spores allantoid, hyaline, 5-6 (&9) x 1.5 jx. On Amelanchier sp., Spence's Bridge, leg. W.G.Ziller (H-1945). Diatrype Pr. (Emend. Wehmeyer, 1926) Stroma effused or isolated; ectostrcma strongly developed and decid-uous; entostroma forming a widely erumpent disk, dark marginal zone present; ostioles sulcate; asci eightrspored; spores biseriate, allantoid, one-celled, yellow-hyaline. Stroma widely effused, continuous or interrupted. D. stigma Stroma flattened-pulvinate, discoid.. Asci p.sp. 40-55 x 4-6 jx • .....P. bull at a Asci smaller, p.sp. not over 30 jx long. Stroma grey; spores 4-6 x .75-1.5yi... .P. Macounii Stroma dark brown; spores 6-8 x 1.5-2 jx,.........•«D. disciformiB D. bullata (Hoffm.) Fr. (Plate 71, fig.13) Stromata gregarious, flattened-pulvinate to shield-shaped, 2-5 mm., erumpent, surface dark brown, interior whitish; perithecia numerous, monostichous, immersed, ovate, small, ostioles punctiform, perforated, slightly prominent; asci narrow-clavate, long-stalked, p.sp. 40-55 x 4-6 jx; spores subbiseriate, allantoid, yellowish-hyaline, 5-8 (-10) x 1.5-2 u. On ?Salix sp., Saanichton, leg. I.Mounce, det. jx« 166* I.L.Connsrs (0-14361)• D. disciformis (Hoffm©) Fr© (Plate VI, fig«14) Stromata scattered or greg-arious, flattened-pulvinate, round, 2-3 mm. diameter, discoid, erumpent, dark brown, whitish within; perithecia 20-30 or more, ovate, about 750 x 500 jx; necks short, ostioles obtusely conical, smooth or 3-5-rcleft; asci clavate, long stalked, p.sp© 22-30 x 4-5 j i ; spores allantoid, yellowish, 6-8 z 1.5-2 jx* On bark of Alnus sp., Hastings, leg. J. Macoun (0M-35b)© D. Macounii Ell© & Ev© (Plate VIJ fig.15) Stromata discoid, grey, 3-4-mm., suborblcular or subelliptical, erumpent; perithecia numerous> 30-50, mono-stichous; ovate-globose, 200-350 jx diameter; neck short, ostiole small, black, radiate-cleft in depressions of the stroma; a3ci p.sp. 20-30 x 3-4.5 jx; spores allantoid, yellowish, 4-6 x .75-1.5 jx. Described by E l l i s and Everhart (1890: 224) on "(Acer rubrum)?, Agassiz, May, 1889. Macoun, No©127." The cotype i s labelled "on alder bark" (QM-127). . On Populus  trlchocarpa Tiifc G«, White Rock (H-1944); Populus sp©, Royal Oak, leg© J.Macoun, det. J.Dearness (OM unnumbered, Sept© 29, 1914), Elk Lake (OM unnumbered, April 18, 1915), Vancouver Island (OM unnumbered, Apr i l 8, 1915). D» stigma (Hoffm©) de Not© (Plate VI, fig.16) Stromata widely effused, continuous or interrupted, f i n a l l y erumpent, brownish or dusty-white becoming nearly black, vbitish inside; peiithecia monostiohous, ovate, small, with short necks and punctiform, discoid, depressed-hemispherical or conical, entire or sulcate ostioles; asci clavate-oblong, long stalked, p.sp. 30-50 x 4-8 u; spores allantoid, yellowish to brownish, 4©5-7©5 x 167. 1-2^1. On Betula fontinalis Sarg., Salmon. Arm, leg. G.E.Woolliams (H-1941). Diatrypella Ces. & de Not. (Emend. Webmeyer, 1926) Stroma effuse or isolated; ectostroma absent or strongly developed, but not deciduous; entostroma well developed, often pustulate but usually not widely erumpent, bounded by a dark marginal zone; perithecia usually clustered, rarely separated, erumpent; ostioles usually sulcata; asci long stalked, poly-sporous; spores allantoid, one-celled, yellow-hyaline. Stromata with an enlarged base; asci p.sp. 100-120 x 10-12^1..D. Tocciaeana Stromata without enlarged base; green within; asei p.sp. 50-60 x 6-7 . P . betulina D. betulina Pk. (Plate VI, fig.17) Stromata transversely erumpent, pron# inent, e l l i p t i c a l , black outside, green within, 1.5-2.5 mm.; perithecia ell i p s o i d , black; ostioles stellate; asci polysporous, stalked, clavate-fusoid, p.sp. 45-65 x 6-7yi, paraphysate; spores crowded, allantoid, yellowish, 4-7 x 1 ji. On Betula fontinalis Sarg., MacLeese Lake, leg. J".Bancroft (H-1942); B.; oecidentalis Hook.,, Quesnel, leg. W.G.Ziller (H-1943, V-5285). D. Tocciaeana de Not. Stromata scattered or gregarious, small, pustulifoaan or hemispherical, with a broad base, disk black, piercing the epidermis; perithecia 3-8 in a stroma, large* globose, with a short, thick neck, ostioles converging, fa i n t l y 3ulcate; asci narrow-oblong-clavate, long stalked, polysporous, p.sp. 80-120 x 10-15ji\ paraphyses long, fil i f o r m ; spores crowded, allantoid, yellow-brown, 5-7.5 x l y i . On bark of Alnus sp., Sidney, leg. J.Macoun, det. J.Dearness (OM-30). 168. 24. Melogrammataceae Stromata mostly round, sharply delimited, conical or cushion-shaped, seldom effused or discoid* mostly hemispherical, formed under the per i -derm and then erumpent and more or less free; perithecia sunken in the stroma; asci cylindrical, clavate, or fusiform, four- to eight-spored; paraphyses present or lacking; spores one- to several-celled or muri-form, hyaline or colored. Endothia Fries Stromata sharply delimited, conical or cushion-shaped, at f i r s t covered, then erumpent, leathery, yellow; perithecia sunken, black, with long necks; asci elongated cylindrical, partly clavate, eight-spored; spores fusoid or ellipsoid, two-celled, hyaline; paraphyses lacking. B. parasitica, (Murr. A. & A. Only the conidial stage seen. On bark of Castanea sativa Sarg., Agassiz (0-370, 0-2992) (CPDS 1941; Faull and Graham 1914) • 25. Xylariaeeae Stromata superficial, free, sometimes pa r t i a l l y sunken in the substrate,:, variously shaped, crust-like, hemispherical, conical, clavate, truncate, or expanded disk-like at the apex, in seme species branched, sometimes fibrous in the sterile part, always of fungus hyphae, oftsn with sterile basal stalk; usually black, woody, or carbonaceous, occasionally thick-fleshy when ypung; perithecia peripheral, concentrically arranged, sunken, occasionally promin-ent, usually mono stichous; ostiole usually short conical, slightly prominent; 169. coriaceous or carbonaceous, black; asei cylindrical or eylindrical-clavate, eight-spored; paraphyses f i l i f o r m or lacking; spores mostly oner-celled, e l l i p s o i d or fusoid, often inequilateral, brown or black. Stroma effused, pulvinate to globose, sessile or stalked. Internal zonation prominent* • , Internal zonation not conspicuous Stroma stalked, clavate to cylindrical, simple or branched Daldinia Ces. & de Not. Stromata pulvinate to globose, stalked or sessile, dark inside, con-spicuously zonate; asci cylindrical, eight-spored, stalked; spores ovoid or oblong, dark-colored. D. concentrica (Bolt.) Ces. & de Not. (Plate VI, fig.l8) Stromata black, carbonaceous, subspherical to hemispherical; perithecia monostichous, obovoid-oblong, angular from pressure, ostioles slightly prominent, punctiform; asci long stalked, 80-100 x 8-10ji (p.sp.); spores dark brown, uniseriate, 12-15 x 7-9 yi. On logs, Slocahjcity, leg. J .Macoun (0M unnumbered, Aug.21, 1900); Betula fontinalis Sarg., Summerland, leg. G.E.Woolliams, sterile (H-1578). According to Child (1952), D. concentrica i s not found in western North America; however the specimens mentioned here do not show any bronze color in the stromata but are black; spores are slig h t l y larger than in D. occidentals. P. occidentals Child* Mentioned by Child (1952) from Bendigo, Victoria, June 1918, E.J.Summers (L-10806); on Be tula occidental is Hook., Be tula sp.,. Cheetzi (CPDS 1953). Not seen. ..Daldinia Hjpoxylon ,..Xylaria 170, Hypoxylon Fries Stromata effused to globose, dark inside, not stalked, not conspic-uously zonate, of woody-corky consistency; perithecia peripheral, globose, ovate or oblong, coriaceous to membranaceous, sunken in the stroma, but generally with the upper part more or less projecting, with a papilliform or umbilicate ostiole; asci cylindrical, eight-spored; spores uniseriate, e l l i p t i c a l or fusoid* inequilateral or curved, one-celled, brown* Stromata hollow when mature, encrusted over peritheciajspores large, over 30jx long H. ustulatum Stromata not hollow; spores smaller, 25 jx in length or less* Stromata with a purplish color. Stromata pulvinate, irregularly circular..*..............H. fuscum Stromata effused in a f l a t layer on the wood........H. vogesiacum Stromata without purplish color. Stromata raised, irregular. At f i r a t red-brown; spores 9-12 x 4-7^a».......H* multiforme Black throughout; spores 18-25 x 8-13ji. •<*... H* aspera Stromata f l a t , effused, greyish black H« serpens var* macrosporum H. aspera Mass. (Plate VI, fig.19) Stromata black, large, prominently hemispherical to irregular* much roughened; perithecia in a peripheral layer, large, ovoid; asei not seen; spores ovate-ellipsoid, one end fre-quently truncate, brown, 18^25.5 x 8-13 jx» On Tsuga heterophylla (Raf.) Sarg., Tumour Island, leg. D.C.Buckland (H-1908); identified by Dr. J.H.Miller, in l i t t . June 12, 1952. Dr. Miller considers this an unusual host. 171. H. fuscum (Pers.) Fr. (Plate 71, fig.20) Stromata purplish, small, prominently erumpent through hark, irregularly globose, blackened by the raised upper part of the perithecia; perithecia shining black, not papillate, globose; asci cylindrical, long stalked, 120-135 x 7-9 j i , p.sp.; spores brown, el l i p s o i d , with two guttules, 12-16 (-18) x 6-8 ji. On Alnus oregona Nutt., Cowichan Lake, leg. V.J.Nordin (H-1855, 7-2916); North Vancouver (H-1857), Sieamous, leg. J.Macoun (0M-167), Sidney, leg. J.Macoun (OM-35, OM-60), U.BC, leg. S.Brown-John (H-1854); Betula sp., Hastings, leg. J.Macoun (QM-56); Corylus sp., Mt. Douglas Park, leg. W.G.Ziller (7-3566)•• .One collection on Populus tremuloides Mjchx., Ashnola District (H-1860), f i t s this species, although Miller (1928: 317) says that H. fuscum i s found only on Alnus, Betula, and Corylus spp. H. multiforme Fr. (Plate 71, fig.21) Stromata large, black, irregular, reddish brown when young, roughened by the prominent perithecia, ostioles black; spores 9-12 x 3-7 ji» F i r s t recorded from B r i t i s h Columbia by E l l i s and Ever hart (1892: 634), on Alnus sp., Macoun. On Alnus oregona Nutt., U.B.C, leg. W.A.Porter (U-127), Sooke, leg. W.G.Ziller (H-1856, 7-3562); Alnus sp., Cowichan Lake, leg.'R.E.Foster (7-397); Betula sp., Hastings, leg. J.Macoun and labelled by him H. commutatum Njtschke var. Holwayanum Sacc. & E l l . (OM-23); Cinema, leg. M.K.Nobles, (H-1852, 7-5196); Sieamous, leg. J.Macoum (OM-164); Populus gtrichocarpa T.& G., Surrey, leg. T.G.Atkinson (H-1858); Populus sp., Sidney, leg. J.Macoun (OM-322, OM un-numbered, Sept.9, 1913); on bark, Comox, leg. J.Macoun (OM-15, OM-27), Hastings, leg. J.Macoun (OM-51, s t e r i l e ) , Cedar H i l l , leg. J.Macoum (OM-63). • 172, E. serpens Pers. ex Fr. var. faacrosporum Miller (Plate 71, fig.22) Stroma f l a t , effused, greyish black; spores 12-18 x 6-9^u. On dead wood, Comox, Vancouver Island, leg. J.Macoun (OM-29). H. ustulatum (Bull.) Fr. (Ustulina vulgaris Tul.) (Plate 71, fig.23) Stromata black, extensive, crust-like over the perithecia; perithecia punctiform, large, broadly ovate; spores black-brown, (27-) 30-39 x 6-9.7 jx. Common around stumps, especially of maple. On Acer macrophyllum Pursh., Mt. Douglas Park, leg. P.J.Salisbury (H-1850, 7-2648, 0-19944), Royston, leg. W.Touzeau (H-1848, V-2162, 0-6487), U.B.C, leg. J.W.Groves (0-23323), (E-1847)j ?Alnus sp,, Goldstream Park, leg. L.Arnall (0-4387); on burned log, GO^B.stream Park, leg. M.K.Nobles (H-1849, V-4662). H. vogesiaeum Pers. ex Sacc. Stromata effused, flattened, purplish-red^ perithecia black, crowded; ostioles punctiform, forming black dots on the surface of the stroma; asci cylindrical, long stalked, p.sp. 105-120 x 7-9ya; spores brown, flattened on one side, guttulate, 14-20 x 6f*8 jx. On Alnus sp., Cowichan Lake, leg. R.E.Foster (H-1851, 7-406). Species not seen or uncertain: E. atropurpureum Fr. Cited by E l l i s and Everhart (1892: 647) on bark, Macoun. His collection (0M-28) on rotten wood, Comox, examined here has asci 90-105 x 6-7 jxf larger than in the description, spores 9-13.5;<ajir 4.5-6jx. It is very close to H. multiforme Fr. Miller (1933 : 324) created H. cinereo-lilacinum usuing E l l i s ' s specimens of E. atropurpureum as type} he considers E l l i s ' s determinations as misunderstanding of the original species. 173. H. eoncurrens B.& C ? ;0n dead wood, s t e r i l e , Hastings, leg. J.Macoun (QM-36). J.Dearness says of this collection: "Mr. E l l i s mentions only two records of H. eoncurrens - Carolina and California. This was probably referred to him, in which case i f he had thought i t H. eoncurrens he would l i k e l y have recorded i t . " H. crustaceum Mitschke. No specimens seen. Listed by E l l i s and Everhart (1892: 652) on decorticated wood, Bri t i s h Columbia (Macoun). H. perforatum (Schw.) Sacc. On poplar, Saanichton, leg. J.Macoun (QM-unnumbered, March 24, 1915). Asci are longer (108-120 x 10-12 yi), than in description. If this determination is correct, the species i s identical with H. rubiginosum Fr. (Miller 1928: 315). H. ?pruinatum (KLotsche) Gke. On Populus tremuloides Michx., causing canker, no perithecia seen. Collected and tentatively determined by D.C.Buckland, Green Lake, 70 Mile House (U-74). Xylaria H i l l . ex.Grev. Stromata erect or ascending, cylindrical, clavate, f i l i f o r m , often compressed, simple or branched, black outside, mostly white within; perithecia immersed in stroma, more or less prominent, globose or ovate, ostiole pap-i l l i f o r m ; asci cylindrical, eight-spored; spores e l l i p s o i d or fusoid, con-tinuous, black or brown, mostly inequilateral.. X. Hypoxylon (L.) Grey. (Plate VI, fig.25, fig.46) Stipe v i l l o s e , s t e r i l e , f e r t i l e portion clavate or flattened, branched or simple, apex ster i l e ; asci cylindrical, long stalked, 75-93 x 6-7.5 jxt p.sp; spores 12-15 x 4.5-7.5 ji, narrow el l i p s o i d , inequilateral. On Alnus oregona Nutt., Lake Cowichan, leg. G.P. Thomas (U-307), North Vancouver, leg. S.Brown-John (H-1853), 174, U.B.C., leg. W.A.Eorter (U-129); on rotten wood, U.B.C. (H-1859); three collections from Sidney collected by J.Macoun, conidial stage only (OM-19, OM-20, OM-46). Xylaria sp. No asci or spores seen. Dearness would leave i t under X. arbuscula or X. apiculata. On rotten wood, Cedar H i l l , leg. J.Macoun (OM-67). 175, HOST INDEX The hosts or substrates of the fungi l i s t e d have been determined as accurately as possible* Names given in the host index are in accord-ance with Bailey's Manual of Cultivated Plants (1949), Peck's Flora of Oregon (1941), or Abrams' Flora of the Pacific States (1940, 1944, 1951), with the exception of certain genera which have been recently monographed. Hosts are arranged alphabetically. Fungus names are followed by the number of the page on which they appear. Abies amabilis L i n d l . Herpotriehia nigra, 58 Herpotrichielia sp., 59 Abies grandis L i n d l . Creonectria Cucurbitula, 39 Herpotriehia nigra, 58 Abies lasiocarpa (Eook.) Nutt. Acanthonitschkea coloradensis, 65 Dimerosporium Abietis, 30 Herpotriehia nigra, 58 Rehmiellopsis abietis, 99 Acer eircinatum Pursh. Creonectria coccinea, 38 Acer macrophyllum Pursh. Creonectria coccinea, 38 Creonectria purpurea, 40 176. Acer macrophyllum cont. Gnomonia setacea, 149 Hypozylon ustulatum, 172 Mycosphaerella punctiformis, 87 Uncinula aceris, 27 Acer spp. Creoneetria mammoidea, 39 Diaporthe eres, 157 Protoventuria vancouverensis, 140 Striekeria obducens, 69 Trematosphaeria ?fissa, 70 Uncinula aceris, 27 Uncinula circinatum, 27 Achillea borealia Bong. Mycosphaerella Tassiana, 89 Achillea lanulosa Nutt. Pleospora asymmetries, 127 Achillea Millefolium L. Mycosphaerella Tassiana,. 89 Pleospora herbarum, 132 Agoseris aurantiaca (Hook.) Greene Sphaerotheca humuli var. fuliglnea, 26 Agoseris glauca (Nutt.) Greene Sphaerotheca humuli var. fuliginea, 26 Agoseris gracilens (Gray) Greene Mycosphaerella Tassiana, 89 177. Agropyron cristatum (L.) Gaertn. Claviceps purpurea, 45 Agropyron 1atiglume (Scribn. & an.) Rydb. Mycosphaerella Tassiana, 89 Pleospora (Clathrospora) pentamera, 135 Agropyron repens (L.) Beauv. Erysiphe graminis, SO Agropyron spicatum (Pursh.) Rydb. Leptosphaeria culmifraga, 110 Mycosphaerella Tassiana, 89 Agropyron trachycaulum (Link.) Malta Pleospora (Pyrenophora)- sp., 140 Agropyron trachycaulum (Link.) Malte var. unilaterale (Cassidy) Malta Pleoapora helvetica, 131 Agroatis alba L. Leptosphaeria culmifraga, 110 Agroatis hiemalis (Walt.) B.S.P. Mycosphaerella Tasaiana, 89 Agrostis hiemalis (Walt.) B.S.P. var. geminata (Trin.) Hitchc. Laestadia graminicola, 75 Agrostis humilis Vasey Pleospora sp., 139 Agrostis Rossae Vasey Leptosphaeria culmifraga, 110 ( Pleospora (Clathrospora) pentamera, 135 Agrostis scabra Willd. Leptosphaeria culmifraga, 110 178. Agrostis stolonifera L. Mycosphaerella Tassiana, 89 Allium Gepa L. Mycosphaerella Tassiana, 89 Pleospora herbarum, 132 Allium cernuum Roth Mycosphaerella Tassiana, 89 Allium Schoenoprasum L. var. sibiricum (L.) Hartm. Mycosphaerella Tassiana, 89 Alnus oregona Nutt. Creonectria pithoides, 39 Creonectria purpurea, 40 Didymosphaeria oregonensis, 106 Eutypella stellulata, 159 . Gnomonia Caryae, 148 Gnomonia setacea, 149 Hypoxylon fuscum, 171 Hypozylon multiforme, 171 ) Melanconis thelebola, 163 -Melanomma pulvie«pyrius, 63 Mycosphaerella punctiformis, 87 Phyllactinia.corylea, 23 Sphaerulina Alni fm. minor, 100 Strickeria bbducens, 69 Xylaria Hypoxylon, 173 Alnus sitchensis Sarg. . Didymosphaeria oregonensis, 106 Melanconis alni , 163 Phyllactinia corylea, 23 Strickeria obducens, 69 Alnus spp. Bertia morifoimis, 61 Diatrype disciformis, 166 Diatrype Macounii, 166 Diatrypella Tocciaeana, 167 Erysiphe aggregata, 19 Eutypella stellulata, 159 Hypoxylon multiforme, 171 Hypoxylon ustulatum, 172 Hypoxylon vogesiacum, 172 Amarantbus sp. Melanospora Townei, 41 Amelanchier a l n i f o l i a Nutt. Apipsporina C o l l i n s i i , 57 Phyllactinia corylea, 23 Amelanchier flor i d a L i n d l . Apiosporina C o l l i n s i i , 57 Amelanchier spp. Apiosporina C o l l i n s i i , 57 Calosphaeria princeps, 165 Strickeria Amelanchieris, 68 Anaphalls margaritacea (L.) D.& H. Mycosphaerella Tassiana, 89 Pleospora helvetica, 131 Andropogon scoparius Michx. Mycosphaerella Tassiana, 89 Pleospora (Clathrospora) pentamera,135 Anemone Drummondii Wats. Mycosphaerella Tassiana, 89 Pleospora Tragacanthae, 136 Anemone globosa Nutt. Mycosphaerella Tassiana, 89 Pleospora comata, 129 Anemone multifida Poir.affinis hudsoniana Mycosphaerella Tassiana, 89 Pleospora coloradensis, 128 Pleospora comata, 129 Antennaria anaphaloides,Rydb. var. genuina Boivin Pleospora herbarum var. occidentalis, 133 Pleospora oligasca, 134 Antennaria dimorpha T.& G. Pleospora herbarum var. occidentalis, 133 Pleospora oligasca, 134 Antennaria Howellii Greene Pleospora oligasca, 134 Antennaria media Greene Mycosphaerella Tassiana, 89 Pleospora asymmetries, 127 181. Antennaria microphylla Rydb. Pleospora oligasca, 134 1 • Pleospora Tragacanthae, 136 Antennaria rosea Greene Mycosphaerella Tassiana, 89 Pleospora oligasca, 134 Antennaria umbrinella Rydb. Pleospora herbarum var. oecidentalis, 133 Pleospora oligasca, 134 Aplopappus Brandegei Gray Mycosphaerella Tassiana, 89 Pleospora asymmetrica, 127 Venturis sp., 144 Aplopappus l y a l l i i Gray Physalospora sp., 122 Pleospora camata, 129 Aquilegia brevi3tyla Mycosphaerella coerulea, 81 Mycosphaerella Tassiana, 89 Aquilegia formosa Fisch. Erysiphe polygon!, 20 Mycosphaerella coerulea, 81 Mycosphaerella Tassiana, 89 Pleospora Compositarum, 130 Pleospora herbarum, 132 Arabia canescans Nutt. Mycosphaerella Tassiana, 89 Pleospora comata, 129 1 Q 2 . Arabia Drummondii Gray Leptosphaeria tenera, 114 Mycosphaerella Tassiana, 89 Arabis hirsuta (L.) Scop. var. glabrata Mycosphaerella punctifonanis var. Clematidis, 87 Mycosphaerella Tassiana, 89 Pleospora (Clathrospora) planispora, 136 Arabis Holboellii Hornem. Pleospora (Clathrospora) planispora, 136 Arabia L y a l l i i Wats. Mycosphaerella Tassiana, 89 Arbutus Menziesii Pursh. Mycosphaerella arbuticola, 80 Arctagrostis l a t i f o l i a (B.Br.) Griseb. Mycosphaerella Tassiana, 89 Pleospora macrospora, 133 Arctoataphyloa columbiana Piper Guignardia ?Vaccinii, 76 Arenaria ca p i l l a r i s Poir. Mycosphaerella Tassiana, 89 Arenaria c a p i l l a r i s Poir. var. nardlfolia Mycosphaerella punctiformis var. Clematidis, 87 Mycosphaerella Tassiana, 89 Pleospora Tragacanthae, 136 Arenaria formosa Fisch. Mycosphaerella Tassiana, 89 Pleospora Tragacanthae, 136 Arenaria obtusiloba (Rydb.) Pern. Leptospbaeria sp., 115 Mycosphaerella dolichospora, 82 Pleospora embigua var. Crandallii, 126 Pleospora Tragacanthae, 136 Arenaria verna L. var. propinqua Fern. Mycosphaerella Tassiana, 89 Pleospora Tragacanthae, 136 Armaria maritima Willd. Pleospora herbarum, 132 Arnica l a t i f o l i a Bong. Diaporthe A r c t i i , 156 Didymella Delphinli, 104 Leptospbaeria sp., 115 Mycosphaerella Tassiana, 89 Nectriella sp., 43 Artemisia borealls P a l l l • Pleospora comata, 129 Artemisia 1ongepedunculata Rydb. Mycosphaerella eriophila, 83 Pleospora asymmetrica, 127 Artemisia trldentata Nutt. Lophiostoma appendiculatum, 71 Rosellinia ovalis, 64 Strickeria obducens, 69 Artemisia vulgaris L» var. discolor (Dougl.) Peck Mycosphaerella Tassiana, 89 Pleospora angustata, 126 Aster conspicuus L i n d l . Mycosphaerella Tassiana, 89 Aster MacCallae Rydb. Erysiphe cichoracearum, 19 Aster novae-angliae L. Erysiphe cichoracearum, 19 Aster spp. Erysiphe cichoracearum, 19 Pleospora herbarum var. occidentalis, 133 Astragalus eampestris Mycosphaerella Tassiana, 89 Pleospora coloradensis, 128 Pleospora (Clathrospora) permunda, 136 Astragalus glareosus Dougl. Mycosphaerella Tassiana, 89 Pleospora asymmetrica, 127 Astragalus Macounii Rydb. Asterella ?Hellebori, 33 Mycosphaerella Tassiana, 89 Venturia sp., 144 Avena sativa L. Claviceps purpurea, 45 Erysiphe gramlnis, 20 Ophiobolus cariceti, 119 Balsamorrhlza sp. Mycosphaerella Tassiana, 89 Pleospora vulgaris, 138 Beta vulgaris L. (Mangel) P e t r i e l l a asymmetrica, 30 Sordaria setosa, 56 Betula fontinalis Sarg. Daldinia concentrica, 169 Diatrype stigma, 166 Diatrypella betulina, 167 Betula occidentalis Hook. Daldinia occidentals, 169 Diatrypella betulina, 167 Eutypella stellulata, 159 Valsa sp., 162 Betula papyrifera Marsh. Trichosphaeria ?breviseta, 60 Betula spp. Daldinia occidentals, 169 Hypoxylon fuscum, 171 Hypoxylon multiforme, 171 Nectria sanguinea, 42 Valsa ceratophora, 161 Bidens cernua L. Sphaerotheca humuli var. fuliginea, Brassica oleracea L. var. acephala DC. Erysiphe polygoni, 20 Brassica oleracea L. var. botrytis L. Mycosphaerella brassisicola, 80 Brassica oleracea L. var. capitata L. Mycosphaerella brassicicola, 80 Brassica oleracea L. var. gemmifera Zenker Mycosphaerella brassicicola, 80 Brassica oleracea L. var. italicaPlenchk. Mycosphaerella brassicicola, 80 Brassica spp. Mycosphaerella Tassiana, 89 Pleospora herbarum, 132 Bromus inermis Leyss. Claviceps purpurea, 45 Bromu3 porteri (Coult;.) Nash Mycosphaerella Tassiana, 89 Calamagrostis canadensis (Michx.) Beauv. Claviceps purpurea, 45 Leptospbaeria culmifraga, 110 Mycosphaerella Tassiana, 89 Calamagrostis Inexpansa Gray Mycosphaerella Tassiana, 89 Calamagrostis neglecta (Ehrk.) Gaertn. Leptosphaeria culmorum, 111 Mycosphaerella Tassiana, 89 Calamagrostis purpuraseens R.Br. Leptosphaeria culmorum, 111 Mycosphaerella Tassiana, 89 Pleospora (Clathrospora) pentamera, 135 Calamagrostis rubescens Buckl. Leptosphaeria culmorum, 111 Mycosphaerella Tassiana, 8S Calamagrostis Suksdorfii (Link.) Trin. Mycosphaerella Tassiana, 89 Calamovilfa l a t i f o l i a (Hook.) Scribn. Leptosphaeria culmorum, 111 Callistephus sp. Erysiphe cichoracearum, 19 Camellia sp. Leptosphaeria Camellias, 109 Campanula ?Media L« Lae stadia?c ircumte gens,K7 5 1 r Mycosphaerella Tassiana,.89 Campanula sp. Mycosphaerella Tassiana, 89 Pleospora herbarum, 132 Carex aerie a Fern. Leptosphaeria consobrina, 110 Carex albonigra Mack, Mycosphaerella Tassiana, 89 Carex angarae Steud. Mycosphaerella Tassiana, 89 Carex aperta Boott. Pleospora (Clathrospora) pentamera, 135 Carex strata L. Mycosphaerella Tassiana, 89 Carex atratiforrais B r i t t . i. Leptosphaeria epicarecta, 112 Mycosphaerella Tassiana, 89 Pleospora (Clathrospora) Elynae, 131 Carex aurea Mutt* Mycosphaerella Tassiana, 89 Carex brunnescens (Pers.) Poir. Leptosphaeria consobrina, 110 Carex diandra Schrank. Leptosphaeria JSApogon, 1G9 Leptosphaeria petkovicensis, 113 Mycosphaerella perexigua, 86 Carex f e s t i v e l l a Mack, (aff.) Claviceps Grohii, 44 Carex flava,L. Mycosphaerella (Sphaerella) p u s i l l a , Mycosphaerella Tassiana, 89 Mycosphaerella Wichuriana, 98 Carex Hoodii Boott. Leptosphaeria ?Apogon, 109 Pleospora discors, 131 Carex limoaa L. Mycosphaerella lineolata, 84 Carex phaeocephala Piper Mycosphaerella Tassiana, 89 Carex praegracilis Boott. Mycosphaerella Tassiana, 89 Mycosphaerella Wiehuriana, 96 Pleospora (Clathrospora) sp., 138 Carex pyrenaica Wahl. Leptosphaeria petkovicensis, 113 Mycosphaerella caricicola, 81 Mycosphaerella Tassiana, 89 Carex sitchensis Prescott Leptosphaeria ? L o l i i , 113 Carex stellulata Good. Claviceps Grohii, 44 Carex spp. Massaria macrotheca, 145 Mycosphaerella Wiehuriana, 96 Cassiope Stellariana DC. Venturia m y r t i l l i , 143 Cassiope sp. Leptosphaeria Audrcmedae, 108 Castanea sativa Sarg. Endothia parasitica, 168 Castilleja lutescans (Greenm.) Rydb. Sphaerotheca hamuli var. fuliginea,26 Cas t i l l e j a miniata Dougl• Mycosphaerella Tassiana, 89 Pleospora comata, 129 190. Ca s t i l l e j a spp. Mycosphaerella Tassiana, 89 Sphaerotheca humuli var. fuliginea, 26 Centaurea Jacea Mycosphaerella Tassiana, 89 Pleospora herbarum, 132 , Chaenomeles lagenaria Koidz. (Japanese quince) Creoneetria purpurea, 40 Chamaecyparis nootkatensis (Lamb.) Spach. Lophiotrema ?nucula, 72 Cheiranthus sp. Mycosphaerella Tassiana, 89 Chimaphila umbellata (L.) Nutt. Mycosphaerella (Sphaerella) Chlmaphilae, 81 Chiogenes hispidula (L«) Torr. & Gr. Microsphaera alni var. vaccinii, 22 Choisya ternata HBK. Creoneetria purpurea, 40 Chrysanthemum spp. Erysiphe cichoracearum, 19 Mycosphaerella Tassiana, 89 Chrysopsis v i l l o s a (Pursh.) Nutt. var. hispida (Nutt.) Gray Pleospora comata, 129 Cichorium Intybys L. Mycosphaerella Tassiana, 89 Pleospora herbarum, 132 191. Cirsium arvense (L.t Scop. Mycosphaerella Tassiana, 89 Pleospora (Clathrospora) baccata, 127 Cirsium Hookerianam Nutt. Mycosphaerella Tassiana, 89 Cirsium lanceolatum (L.) Scop. Mycosphaerella punctiformis var. dematidis, 87 Ophiobolus acuminatus, 118 Pleospora (Clathrospora) baccata, 127 Cirsium spp. Mycosphaerella punctiformis var. Clematidis, 87 Ophiobolus acuminatus, 118 Pleospora herbarum, 132 Comandra pallida DC. Erysiphe polygoni, 20 Coreopsis grandiflora Sphaerotheca humuli var. fuLiginea, 26 Coreopsis sp. Sphaerotheca humuli var. fuliginea, 26 Cornus N u t t a l l i i Aud. Mycosphaerella ?Auerswaldii, 80 Phyllactinia corylea• 23 Cornus pubescens Nutt• Phyllactinia corylea, 23 Cornus stolonifera Michx. Phyllactinia corylea, 23 192. Corylus Californiea (A.DC.J) Rose Gnomoniella Coryli, 151 Melanomma pulvis-pyrius, 63 Corylus rostrata A i t . Gnomoniella Coryli, 151 Corylus spp. Gnomoniella Coryli, 151 Hypoxylon fuscum, 171 Phyllactinia corylea, 23 Crataegus sp. Phyllactinia corylea, 23 Crepis atribarba Heller Mycosphaerella Tassiana, 89 Cucumis melo L. P e t r i e l l a asymmetrica, 30 Cucumis spp. Erysiphe cichoracearum, 19 Qucurbita maxima Duch. Mycosphaerella Tassiana, 89 Sordaria fimicola, 55 Cytisus sp. Leptosphaeria Californiea, 109 Dactylis glomerata L. Erysiphe graminis, 20 Leptosphaeria culmorum, 111 Phyllachora graminis, 50 D 193. Danthonia califoraica Boland var. americana (Scribn.) Hitehe. Mycosphaerella Tassiana, 89 Danthonia intermedia Yasey Leptosphaeria culmorum, 111 Daucus carota L. Sordaria f imicola, 55 Delphinium Brownii Rydb. Metasphaeria ?zobeliana, 118 Delphinium sp. Erysiphe cichoracearum,' 19 Erysiphe polygon!, 20 Mycosphaerella Tassiana, 89 Deschampsia atropurpurea (Wahl.) Scheele Leptosphaeria culmorum, 111 Mycosphaerella Tassiana, 89 Deschampsia elongata (Hook.) Munro ex Benth. Mycosphaerella Tassiana, 89 Dianthus sp. Laestadia ?circumtegens, 75 Dhporthe columbiensis E l l . & Ev. Nectria episphaeria, 42 Diatrype Macounii E l l . & Ev. Nectria episphaeria, 42. Diatrype sp. Melanomma parasiticum, 62 Digitalis sp. Pleospora herbarum, 132 Distichlis spicata (L.) Gaeehe Mycosphaerella graminicola, 83 Distichlis spicata (L.) Greene var. st r i c t a (Gray) Beetle Mycosphaerella graminicola, 83 Draba alpina L. Mycosphaerella confinis, 82 Mycosphaerella Tassiana, 89 Pleospora helvetica, 131 Draba incerta Pays. Mycosphaerella Tassiana, 89 Draba Paysonii Macbr. Mycosphaerella Tassiana, 89 Pleospora helvetica, 131 Draba Paysonii Macbr. var.'Treleasli (Schulz) Hitchc. Acrosper$um ccmpressum, 37 Pleospora Composttarum, 130 Draba praealta Greene Mycosphaerella Tassiana, 89 Pleospora Tragacanthae, 136 Draba stenoloba Ledeb. Leptosphaeria tenera, 114 Mycosphaerella Tassiana, 89 Pleospora asymmetrica, 127 Dryas Drummondii Rich. Massarina Dryadis, 146 Dryas octopetala L. Pleospora oligasca, 134 Dryopteris sp. Microthyrium ?microscopicum,D55: Elymus arenarius L. Claviceps purpurea, 45 Elymus canadensis L. Claviceps purpurea, 45 Elymus condensatus Presl• Claviceps purpurea, 45 Phyllachora graminis, 50 Elymus glaucus Buckl. Claviceps purpurea, 45 Elymus innovatus Beal Leptosphaeria culmorum, 111 Mycosphaerella Tassiana, 89 Pleospora macrospora, 133 Elymus Macounii Vasey Claviceps purpurea, 45 Leptosphaeria culmifraga, 110 Leptosphareia culmorum, 1111 Elymus sp. Claviceps purpurea, 45 Epilobium angustifolium L. Diaporthe pardolata. 158 Didymella fenestrans, 104 Mycosphaerella (Sphaerella) microspila, 85 Mycosphaerella minor, 85 Erigeron acris L» var. asteroides (Andrz.) DC. Pleospora Tragacanthae, 136 Erigeron aurea var. typicus Cronq.. Pleospora Tragacanthae, 136 Erigeron compositus Pursh. Pleospora Tragacanthae, 136 Erigeron compositus Pursh. var. glabratus Macoun Pleospora njegusensis, 134 Pleospora Tragacanthae, 136 Erigeron corymbosus Nutt. Pleospora Compositarum, 130 Erigeron f i l i f o l i u s (Hook.) Nutt. Pleospora Balsamorrhizae, 128 Pleospora Campositarum, 130 Erigeron linearis (Hook.) Piper Laestadia circumtegens, 75 Mycosphaerella Tassiana*-89 Pleospora comata, 129 Erigeron lonchophyllus Hook. Pleospora comata,129 Erigeron pumilus subsp. intensedius fclivoi'Mycospliaerella Tassiana, 89 Pleospora Compositarum, 130 Erigeron apeciosus DC. var. macranthus (Nutt.) Cronq. Leptosphaeria agnita, 108 Pleospora Compositarum, 130 Erigeron speciosus DC. var. typicus Cronq. Mycosphaerella, Tassiana, 89 Erigeron spp. Mycosphaerella eriophila, 83 Mycosphaerella punctifammis var. Clematidis, 87 Mycosphaerella Tassiana, 89 Pleospora asymmetrica, 127 Pleospora comata, 129 Pleospora herbarum, 132 Pleospora vulgaris, 138 Eriogonum heracleoides Nutt. Mycosphaerella Polygonorum, 86 Eriogonum subalpinum Greene Pleospora oligasca, 134 Eriogonum umbellatum Torr. Pleospora oligasca, 134 Eutypella stellulata (Fr.) Sacc. Nectria episphaeria, 42 Festuca attaica Trin. Leptosphaeria sp., 115 Mycosphaerella Tassiana, 89 Physalospora sp., 122 Festuca elatior L« Claviceps purpurea, 45 Festuca idahoensis Elmer Mycosphaerella Wiehuriana, 96 Festuca ovina L. Mycosphaerella Tassiana, 89 Festuca ovina L. var. brachyphylla (schult.) Piper Mycosphaerella Tassiana,.89 Festuca pacifica Piper Mycosphaerella Tassiana, 89 Festuca rubra L» Mycosphaerella Tassiana, 89 Phyllachora s i l v a t i c a , 50 Ficus sp. Creonectria purpurea, 40 Fomes pinicola, (Fr.) Cke* Hyppmyces aurantius, 47 Fragaria chiloensis (L.) Duch. Mycosphaerella (Sphaerella) earliana, 82 Mycosphaerella Fragariae, 83 Fragaria sp. Sphaerotheca humuli, 25 199. Galllardia aristate Pursh. Mycosphaerella Tassiana, 89 Pleospora angustata, 126 Pleospora sp., 139 Gaultheria Shallon Pursh. Asterella Gaultheriae, 32 Leptosphaeria Gaultheriae, 112 Gentiana calycosa Griseb. Sphaerulina Gentianae, 100 Venturia atriseda, 142 Geranium erianthum DC. ( Mycosphaerella Tassiana* 89 Geranium pusillum Burm.f. Stigmatea Robertiani, 35 Geranium viscosissimum Fisch. & Mey. Sphaerotheca humuli, 25 Geum triflorum Pursh. Pleospora oligasca, 134 G i l i a l i n e a r i s Gray Sphaerotheca humuli, 25 Heuchera glabra Willd. Mycosphaerella punctiformis var. Clematidis, 82 Sphaerotheca humuli, 25 4 Hieraceum Albertinum Farr Pleospora herbarum var. occidentalis, 133 Hierae&um aurantiacum L. Mycosphaerella Tassiana, 89 Pleospora herbarum, 132 Hieracium gracile Hook. Mycosphaerella Tassiana, 89 Hierochloe alpina (Swarta.) Hoem. Mycosphaerella Tassiana, 89 Hierochloe borealis Roem. & Schult. Mycosphaerella Tassiana, 89 Hierochloe•odorata (L.) Beauv. Mycosphaerella Tassiana, 89 Holcus lanatus L. Epichloe typhina, 46 Holodiscus discolor (Pursh.) Maxim. Phyllactinia corylea, 23 Hordeurn vulgare L. Claviceps purpurea, 45 Erysiphe graminis, 20 Hordeum sp. Erysiphe graminis, 20 Hydrangea sp. Mycosphaerella Tassiana, 89 Hypoxylon sp. Nectria episphaeria, 42 I r i s germanica L. Laestadia ?circumtegens, 75 Mycosphaerella Tassiana, 89 201. I r i s gerxnanica corit. Pleospora Ccmpositarum, 130 Pleospora herbarum, 132 I r i s sp. Didymellina macro sp or a, 105 Juncus Drummondii Meyer Leptosphaeria petkovicensis, 113 Mycosphaerella caricicola, 81 Mycosphaerella Tassiana, 89 Phomatospora therophila, 121 Juncus Parryi Engelm. Leptosphaeria petkovicensis, 113 Juniperus scopulorum Sarg. Microthyrium Juniperi, 35 Juniperus s i b i r i c a Burgad. Microthyrium Juniper 1, 35 Koeleria oristata (L.) Pars. Leptosphaeria culmorum, 111 Mycosphaerella Tassiana, 89 Lactaria sp. Hypomyces Lactifluorum, 47 Lactuca scariola L. Erysiphe cichoracearum, 19 Sphaerotheca humuli var. fuligineSj 26 Lactuca spicata (Lam.) Hitchc. Sphaerotheca humuli var. fuliginea, 26 Lathyrus ochroleucus Hook* Erysiphe polygoni, 20 Lathyrus odoratus L, Mycosphaerella Tassiana, 89 Pleospora herbaium* 152 Lathyrus sp, Erostrotheca multiformis, 37 Ledum glandulosum Nutt, Leptosphaeria sp., 115 Ledum groenlandicum Oedr, Leptosphaeria sp., 116 Pleospora (Catharinia) sp,, 138 Venturis ?Cassandrae, 142 Linnaea borealis L, var, americana (Forbes) Render Venturis Dickiei, 142 Linun Lewisii Pursh, Mycosphaerella Tassiana, 89 Pleospora Tragacanthae, 136 Lolium perenne L, Claviceps purpurea, 45 Lomatium ambiguum (Nutt. C.& R. Mycosphaerella Tassiana, 89 Lonicera involucratum Banks Leptosphaeria dumetorum, 112 Ophiobolus minor, 119 Protoventuria sp*, 140 Lonicera sp. Microsphaera alni var. lonicerae, 22 Lotus denticulatus (Drew) Greene (Hosackia denticulata Drew) Erysiphe polygoni, 1)20 Lupinus l a t i f o l i u s Agh. yar. subalpinus (Piper & Robins.) C.P.Sm. Leptosphaeria agnita, 108 Mycosphaerella Tassiana, 89 .:• Hectriella sp., 43 Pleospora asymmetrica, 127 Lupinus L y a l l i i Gray Mycosphaeeella Tassiana, 89 Pleospora Tragacanthae, 136 Lupinus polyphyllus L i n d l . Erysiphe polygoni, 20 Lupinus perennis L. Erysiphe polygoni, 20 Lupinus sericeus Pursh> Mycosphaerella Tassiana, 89 Lupinus spp. Erysiphe polygoni* 20 Laestadia ?circumtegens* 75 Mycosphaerella Tassiana, 89 Pleospora herbarumj 132 Luzula campestris (L.) DC. Pleospora discors, 131 Luzula Piperi (Cov.) M.E.Jones Mycosphaerella Tassiana, 89 804. Luzula spicata (L.) DC. Mycosphaerella Tassiana, 89 Pleospora (Clathrospora) Elynae, 131 Luzula Wahlenbergii Rup. Mycosphaerella Wiehuriana, 96 Lychnis- Coronaria Desr. Mycosphaerella Tassiana, 89 Pleospora herbarum, 138 Lycopersicum esculentum M i l l . Mycosphaerella Tassiana, 89 Matthiola sp. Erysiphe polygon!, 80 Medicago sativa L. Pseudoplea T r i f o l i i , 99 Melanconis thelebola (Fr.) Sacc. Nectria episphaeria, 48 Melllotus sp. Leptosphaeria pratehsis, 113 Monarda mollis L. Mycosphaerella Tassiana,. 89 Myrica Gale L. Uncinula s a l i c i s , 88 -Nuttallia cerasiformis T.& G. Diaporthe columbiensis, 157 Oenothera biennis L. Laestadia ? circumtegens, 75 Mycosphaerella Tassiana, 89 Pleospora herbarum, 138 205. Oenothera spp. Erysiphe cichoracearum, 19 Pleospora herbarum, 132 Oryzopsis asperifolia Miehx. Mycosphaerella Tassiana, 89 Oryzopsis hymenoides (R.& S.) Bicker Mycosphaerella Tassiana, 89 Pleospora (Clathrospora) pentamera, 135 Oryzopsis pungens (Torr.) Hitchc. Mycosphaerella Tassiana, 89 Mycosphaerella Wiehuriana, 96 Oxyria digyna (L.) Camptdera Chaetomium ?spirale, 52 Coleroa Oxyriae, 58 Oxytropis alpicola (Rydb.) Jones Leptosphaeria sp., 116 Pleospora comata, 129 Pleospora sp., 139 Oxytropis Ousickii Greenm. Pleospora Tragacanthae, 136 Pachystima myrsinites Raf• Mycosphaerella Pachystimae, 85 Panicum occidentale Scrib. Leptosphaeria culmifraga, 110 Mycosphaerella Tassiana, 89 Panicum thermale Boland Leptosphaeria culmorum, 111 206. Parthenocissus sp. Uncinula necator, 28 Pedicularis bracteosa Benth. Apiosporella alpina, 102 Mycosphaerella Tassiana, 89 Pleospora Tragacanthae, 136 Pedicularis paddoensis Pennel ?Massarinia sp., 146 Mycosphaerella Tassiana,, 89 Penstemon e l l i p t i c u s Coult. & Fisher Venturis sp., 144 . Penstemon fruticosus (Pursh.) Greene Dimerium alpinum, 29 Penstemon ovatus Dougl. Mycosphaerella Tassiana, 89 ' Penstemon tolmiel Hook. Pleospora herbarum var. occidentalis, 133 Penstemon sp. Erysiphe cichoracearum, 19 Phacelia leptosepala Hydb. Ophiobolus rudis, 120 Phacelia leucophylla Torr. Mycosphaerella Tassiana, 89 Pleospora coloradensis, 128 Pleospora vulgaris, 138 Venturia SP*» 145 Bhacelia aericea Gray Pleospora comata, 129 Pleospora Tragacanthae, 136 Phalaria arundinacea L. Leptosphaeria culmicola, 110 Phaseolus coeeineus L. (Scarlet runner bean) Melanospora papillata, 41 Phleum alpinum L. Asterula sp.,33 Leptosphaeria eustoma, 112 Mycosphaerella Tassiana, 89 Phleum pratense L. Claviceps purpurea, 45 Phlox diffusa Benth. Mycosphaerella Tassiana, 89 Nectriella sp., 43 Pleospora comata, 129 Phlox Douglas!i Hook. Mycosphaerella Tassiana, 89 Pleospora comata, 129 Bhlox lo n g i f o l i a Nutt. Pleospora (Clathrospora) diplespora, 130 Pleospora (Clathrospora) permunda, 136 Phlox rigida Benth. Pleospora comata, 129 Pleospora (Clathrospora) permunda, 136 Phlox speciosa Pursh. Lophiostoma caulium, 71 Phlox specipsa cont• Pleospora comata, 129 Phlox sp. Erysiphe cichoracearum, 19 Picea sitchensis (Bong.) Carr. Herpotrichia nigra, 58 Pinus monticola Dougl. Ceratostomella sp., 65 • Cucurbidothis pithypphila, 48 Pinus ponderosa Dougl. Rosellinia obliquata var. Americana Pisum sativum L. Erysiphe polygoni, 20 Mycosphaerella pinodes, 86 Pleospora herbarum, 132 Pisum sp. Erysiphe polygoni, 20 Plantago major L. Erysiphe cichoraeearum, 19 Platanus occidentalis L. Gnomonia veneta, 150 Platanus sp. Gnomonia veneta, 150 Poa alpina L. Leptosphaeria culmifraga, 110 Mycosphaerella Tassiana, 89 Pleospora helvetica, 13B Poa ampla Merr. Leptosphaeria culmorum, 111 Mycosphaerella Wiehuriana, 96 Pleospora diseors, 131 Poa arctica H.Br. Mycosphaerella Tassiana, 89 Poa compressa L. Leptosphaeria eulmifraga, 110 Leptosphaeria culmorum, 111 Mycosphaerella Tassiana, 89 Pleospora (Clathrospora) pentamera, 135 Poa confinis Vasey Mycosphaerella Tassiana, 89 Pleospora diseors, 131 Poa glauca Vahl. Leptosphaeria culmorum, 111 Mycosphaerella Tassiana, 89 Pleospora helvetica, 131 Poa gracillima Vasey Leptosphaeria culmorum, 111 Pleospora arctica, 126 Poa interior Rydb. Metasphaeria Poae, 117 Mycosphaerella Tassiana, 89 Mycosphaerella Wiehuriana, 96 Pleospora (Clathrospora) pentamera, 135 210. Poa lettermanni Vasey Mycosphaerella Tassiana, 89 Poa nemoralis L. Leptosphaeria culmifraga, 110 Poa nervosa (Hook.) Vasey Leptosphaeria culmifraga, 110 Mycosphaerella Tassiana, 89 Poa palustris L. Leptosphaeria culmifraga, 110 Poa paucispicula Scrib. & Merr. Ascospora graminis, 74 Mycosphaerella Tassiana, 89 Poa pratensis L* Mycosphaerella Tassiana, 89 Poa rupicola Nash Leptosphaeria sp., 116 Pleospora (Clathrospora) sp., 139 Poa secunda Presi. Ascospora graminis, 74 Leptosphaeria culmorum, 111 Mycosphaerella Tassiana, 89 Poa stenantha Trin. Leptosphaeria culmifraga, 110 Mycosphaerella Tassiana, 89 Poa spp. Erysiphe graminis, 20 Phyllachora graminis, 50 211. Polemonium Jcalifornicum Bastw. Mycosphaerella Tassiana, 89 Polemonium coeruleum L. subsp. Occidentale (Greene) Davids. Pleospora comata, 129 Polemonium pulcherrlmum Hook. Mycosphaerella Tassiana, 89 Pleospora comata, 129 Polemonium v i s c o 3 u m Nutt, Pleospora comata, 129 Polygonum aviculare L. Erysiphe polygoni, 20 Polygonum erectum L. Erysiphe polygoni, 20 Polygonum ramosi3simum Michx. Erysiphe golygoni, 20 Polygonum Persicaria L.. Erysiphe polygoni, 20 Polygonum sp. Erysiphe polygoni, 20 , Polyporua resinosus, Fr. Hypamyces aurantius, 47 Polyporus sp. Hypomyces aurantius, 47 Polystichum muniturn (Kaulf.) Presi. ?Microthyrium microscopicum, 35 Populus balsamifera L. Linospora sp., 152 Populus deltoides Marsh. Mycosphaerella populifolia, 86 Populus tremuloides Michx. Hypoxylon fuscum, 171 ?Hypoxylon pruinatum, 173 Mycosphaerella orbicularis, 85 Otthia sp., 66 . Phaeosphaerella maculosa, 98 Uncinula s a l i c i s , 28 Populus trichocarpa T.& G. Diaporthe eres, 157 Diatrype Macounii* 166 Hypoxylon multiforme, 171 Mycosphaerella populifolia, 86 Uncinula s a l i c i s , 28 Populus spp. Cryptosphaeria populina, 155 Diaporthe columbiensis, 157 Diatrype Macounii, 166 Eutypella stellulata, 159 Hypoxylon multiforme, 171 ?Hypoxylon perforatum, 173 Otthia sp., 66 Valsa nivea, 161 Potentilia dissecta Nutt• Pleospora comata, 129 Pleospora oligasca, 134 Potentilia div e r s i f o l i a Lehm. Asterula sp., 34 Guignardia Potentillae, 75 Mycosphaerella Tassiana, 89 Pleospora comata-, 129 Pleospora oligasca, 134 Potentilia emarginata Pursh. Pleospora oligasca, 134 Potent i l i a f l a b e l l i f o l i a Hook. Microthyrium arcticum, 34 Mycosphaerella Tassiana, 89 Potentilla N u t t a l l i i Lehm. Mycosphaerella Tassiana, 89 Potentilla palustris Scop. Gnomonia potentillae, 149 Mycosphaerella Fragariae, 83 Mycosphaerella Tassiana, 89 Sphaerotheca humuli, 25 Primula sp. Pleospora herbarum, 132 Prunella vulgaris L. Ophiobolus Rostrupii, 152 Prunus•armeniaca L. var. An da . Dibotryon morbosum, 49 Podosphaera oxyacanthae, 24 Prunus avium L. Podosphaera oxyacanthae, 24 214. Prunus demisaa (Nutt.) D.Dietr. Capronia pieiospora, 103 Dibotryon morbosum, 49 Fenestella princeps, 159 Podospbaera oxyaeanthae, 24 Prunus emarginata (Dougl.) F/alp. Podosphaera oxyaeanthae, 24 Prunus emarginata (Dougl.) Walp. var. mollis (Dougl.) Brewer Mycosphaerellaficinerascens, 81 Prunus persica (L.) Stokes Valsa leucostoma, 161 Prunus spp. Dibotryon morbosum, 49 Podospbaera oxyaeanthae, 24 Sphaerotheca pannosa, 26 Pseudotsuga t a x i f o l i a (Lam.) Britton Caliciopsis Pseudotsugae, 67 Phaeocryptopus gaumannii, 31 Valsa P i n i , 162 Pteridium aquillnum (L.) Kuhn. Mycosphaerella indistincta, 84 Puccinellia Muttalliana (Schulti.) Hitchc. Laestadia graminicola, 75 Mycosphaerella Tassiana, 89 Pyrus communis L. Nectria galligena, 42 Podosphaeria oxyaeanthae, 24 Venturia pyrina, 143 Pyrus Malus L. Creoneetria purpurea, 40 Nectria galligena, 42 Podosphaera leucotrieha, 24 Valsa ambiens, 161 Yalsa leucostoma, 161 Yenturia inaequalis, 143 Que reus G-arryana Dougl. Microsphaera a l n i , 22 . Ranunculus B3Chscholtzii Schlecht. Mycosphaerella Ranunculi, 88 Pleospora asymmetrica, 127 Raphanus sativus L. P e t r i e l l a asymmetrica, 30 Sordaria hypocoproides* 56 Rhus glabra L. Sphaerotheca humuli, 25 Striekeria (Cucurbitaria) Typhina, Ribes nigrum L• Sphaerotheca mors-uvae, 26 Ribes sativum Syme Sphaerotheca mors-uyae, 26 Ribes spp. Mycosphaerella Grossulariae, 83 Sphaerotheca mors-uvae, 26 Rosa eentifolia L« var. muscosa Ser. Mycosphaerella rosicola, 88 Rosa spp. Didymella Rauii, 104 . Didymosphaeria ?Borgii, 106 Metasphaeria Macounii, 117 Pieosphaerulina.constricta, 98 Rubus macropetalus Dougl. Apiopbrthe vepris, 154 Sphaerotheca humuli, 25 Rubus parviflorus Nutt. Coleroa Chaetcmium, 58 Didymella applanata, 103 Gnomonia depressula, 148 Gnomonia Vepris, 150 MFcosphaerella (Sphaerella) melaena, Sphaerotheca humuli, 25 Rubus spectabilis Pursh. Sphaerotheca humuli, 25 Rubus sp. (Blackberry) Leptosphaeria coniothyrium, 109 Mycosphaerella rubi, 88 Rubus sp. (Boysenberry) Mycosphaerella rubi, 88 Rubus sp. (Loganberry) Didymella applanata, 103 Leptosphaeria coniothyrium, 109 Rubus sp. (Raspberry) Ascospora Ruborum, 74 Creonectria purpurea, 40 Didymella applanate, 103 Leptospbaeria coniothyrium, 109 Mycosphaerella rubi, 88 Sphaerotheca humuli, 25 Sphaerotheca humuli var. fuliginea, 26 Rubus sp, (Toungberry) Mycosphaerella rubi, 88 Rubus spp. Asterina rubicola, 33 Valsa ceratophora, 161 Rudbeckia laciniata L. Erysiphe cichoracearum, 19 Rumex Acetosella L. Mycosphaerella (Sphaerella) melaena, 84 Mycosphaerella Tassiana, 89 Venturia Rumicis, 144 Rumex obtusifolius L. Mycosphaerella stromatoidea, 89 Rumex occidentalis Wats. Mycosphaerella stromatoidea, 89 Rumex spp. Mycosphaerella stromatoidea, 89 Pleospora herbarum, 132 Salix babyloniea L. Diaporthe eres, 157 Melanomma cinereum, 62 Physalospora Miyabeana, 121 Salix pennata Ball Leptosphaeria sp., 115 Salix saximontana Rydb. Mycosphaerella sp., 97 Salix spp. Cryptodiaporthe salicina* 155 Diatrype bullata, 165 Linospora ?insularis, 152 Physalospora Miyabeana, 121 Uncinula s a l i c i s , 28 Venturia chlorospora, 142 Sambucus sp. Otthia sp., 66 Mycosphaerella sp., 97 Sanicula crassicaulis Poepp. Mycosphaerella Tassiana, 89 Mycosphaerella sp., 97 Pleospora herbarum, 132 Schizachne purpurascens (Torr.) Swallen Mycosphaerella Tassiana, 89 Secale cere ale L. Claviceps purpurea, 45 Erysiphe graminis, 20. Sedum stenopetalum Pursh* Mycosphaerella Tassiana, 89 Senecio canus Hook. Pleospora oligasca, 134 Senecio integerrimus Nutt. Mycosphaerella Tassiana, 89 Senecio pauperculus Michx. Mycosphaerella punctiformis var. Clematidis, Pleospora Compositarum, 130 Sequoia sempervirens Ehdl. Leptosphaerulina sp., 76 Shepherdia canadensis Nutt* Sphaerotheca humuli, 25 Sibbaldia procumbens L. Microthyrium arcticum, 34 Mycosphaerella (Sphaerella) innumerella, 84 Silene acaulis L. Leptosphaeria Silenes-acaulis, 114 Silene Douglasii Hook. Mycosphaerella Tassiana, 89 Mycosphaerella sp., 97 Pleospora comata, 129 Sisyrinchium angustifolium Mi l l e r Mycosphaerella Tassiana, 89 Sitanion hystrix (Nutt.) J.G.Smith Leptosphaeria sp., 115 Mycosphaerella Tassiana, 89 Sol arum nigrum L. Erysiphe cichoracearum, 19 Solidago decumbens- Greene Pleospora Balsamorrhizae, 128 Solidage multiradiata A i t . Mycosphaerella Tassiana, 89 Solidago sp. Erysiphe cichoracearum, 19 Sphenopholis obtusata (Michx.) Scrib. Mycosphaerella Tassiana Spiraea lucida Dougl• Mycosphaerella (Sphaerella) melaena* Mycosphaerella Tassiana, 89 Spiraea Menziesii Hook. Creoneetria purpurea, 40 Cryptodiaporthe Macounii, 154 S t e l l a r i a longipes Goldie Mycosphaerella Tassiana, 89 Stenanthlum occidentals Gray Mycosphaerella Tassiana, 89 Pleospora comata, 129 Pleospora Compositarum, 130 Stipa columbiana Macoun Mycosphaerella Tassiana, 89 Stipa comata Tri.ru & Rupr. Mycosphaerella Tassiana, 89 Pleospora (Clathrospora) pentamera, 135 Pleospora (Clathrospora) permunda, 136 Stipa Richardson! Link Mycosphaerella Tassiana, 89 Symphoricarpos albus (L.) Blake Microsphaeria diffusa, 22 Mycosphaerella Tassiana, 89 Syringa vulgaris L. Pleospora sp,, 139' Tanecetum vulgare L, Mycosphaerella Tassiana, 89 Pleospora herbarum, 132 Taraxacum officinale Weber Sphaerotheca humuli var, fuliginea, 26 Taraxacum spp. Sphaerotheca humuli var. fuliginea, 26 Thuja plicata D.Don. Mycosphaerella sp., 97 Tofieldia coccinea Rich. Pleospora herbarum var. occidentalis, 133 Tofieldia glutinosa (Mt.) Pers. Mycosphaerella Tassiana, 89 Trifolium hybridum L. Cymadothea T r i f o l i i , 49 Erysiphe polygoni, 20 Trifolium pratense L. Cymadothea T r i f o l i i , 49 Erysiphe polygoni, 20 Trifolium repens L. Cymadothea T r i f o l i i , 49 . Trifolium spp. Didymella T r i f o l i i , 105 Pleospora herbarum, 132 Trisetum spicatum. (L.) Richt. Leptosphaeria culmorum, 111 Mycosphaerella Tassiana, 89 Pleospora arctica, 126 Pleospora (Pyrenophora) sp., 140 Triticum aestivum L. Claviceps purpurea, 45 Erysiphe graminis, 20 Ophiobolus cariceti, 119 Tsuga heterophylla (Raf.) Sarg. Dimerosporium Tsugae, 30 Herpotriehia nigra, 58 Hypoxylon aspera, 170 Tsuga sp. Lophiotrema nucula, 72 Typha l a t i f o l i a L. Leptosphaeria Typhae, 114 Leptosphaeria typhicola, 114 Mycosphaerella Typhae, 96 Vaccinium oorymbosum L. Melanomma pulvis-pyrius, 63 Vaccinium Qxycoccos L. Acanthorhynchus vaccinii, 53 Vicia faba L. Melanospora papillate, 41 Viola adunca Smith Pleospora asymmetrica, 127 Viola tricolor L. Sphaerotheca humuli, 85 Viola sp. Sphaerotheca humuli, 25 V i t i s sp. (Grape) Guignardia Bidwellii, 75 Uncinula necator, 28 Yucca sp. Phomatospora ?argyrostigma, 121 Zea Maya L. Mycosphaerella Tassiana, 89 Zinnia elegans Jacq.. Erysiphe cichoracearum, 19 Zygadenus elegans (Pursh.) Rydb. Mycoaphaerella Tassiana, 89 224. SUMMARY The foregoing l i s t shows a total of 263 species in 95 genera© Those species which have not been determined and which are awaiting complete identification comprise 41. In the table given below the number of genera, species, and indeterminate species are tabulated by family and order.. TABLE I . Family Genera Species Indet. species PERISPORLALES: Erysiphaceae 6 19 Perisporiaceae 4 5 Microthyriaceae 5 7 2 HYPOCREALES: Neetriaceae 6 12 2 Hypocreaceae 4 6 m DOTHIEEALES: Dothideaceae 6 6 1 SPBAERLALES: Chaetomiaceae 1 22 *• Sordariaceae 4 6 *!• T r i eho sphaer iace ae 5 5 1 Melanommeae 4 8 -Ceratostomataceae 1 1 225© TABLE I cont. i if .-J Family Genera Species Indet.species 5FHAER1ALES cont. Cucurbitariaceas 2 1 1 Coryneliaceae 1 1 «* Ampbisphaeriaceae 2 '.i.4 Lophiostomataceae 2 4 •e Mycosphaerellaceae 51 6 Pleosporaceae y 13 77 23 Massariaceae 2 2 1 Gnomoniaceae 3 8 -Clypeosphaeriaceae 1 1 1 Valsaceae 7 15 1 Melanconidaceae 1 2 Diatrypaceae 3 7 *** Melogrammataceae 1 1 ** Xylariaceae 3 13 1 TOTAL 95 263 41 Comparison of this l i s t of Pyrenomycetes with those of Manitoba and Saskatchewan (Bisby, et a l . 1938) and those of the Maritime Provincea (Wehmeyer, 1950) i s also given. The number of species reported for the three regions 9 and the number of species common to each of the other two regions and to British Columbia are given for the four orders of 226o Pyrenomycetes» A l l varieties are counted as species i n each case. TABLE II Order British Columbia species Manitoba species common Maritimes species common PERISPORIALES 31 18 14 28 19 ETPOCHEALES 18 32 8 42 9 DOTHIDEALES 6 9 2 10 3 SPHAERIALES 208 276 39 166 46 TOTAL 263 335 63 246 77 The larger number of species from Manitoba i s probably the result of more intensive study for a longer period* Of the three families best represented in British Columbia, comparison with those of Manitoba and the Maritimes shows the following: TABLE III Family British Columbia species Manitoba species common Maritimes species common Erysiphaceae 19 16 13 23 18 Mycosphaerellace ae 51 9 4 18 9 Pleosporaceae 77 56 12 35 12 227. The larger number of British Columbia species in two of these families indicates that further study i n a l l groups would show a similarly large number of species in the other families. Further study would also provide more fungi common to this province and the other two regions. The similarity between European and Western North American fungi has been noted previously by collectors in the west. As Kaufftnan (1925: 116) says: n.«.many species, i f one i s at a l l familiar with northern European plants, are found to be old Friesian species.*a . . " . A number of species in this l i s t have not previously been noted from North America. These species are marked i n the l i s t by an asterisk. As l a s been previously stated, this l i s t i s far from complete. The size of the province prevented collecting throughout the larger part of i t . Even in the areas more intensively studied, many more species w i l l doubtless be found© 228. REFERENCES 1, Abrams, Leroy, Illustrated Flora of the Pacific States, Stanford University, University Press, Vol.1, 1940, Vol,11, 1944, Vol,III, 1951, 2, Ainsworth, G.C. and Bisby, G.R. A Dictionary of the fungi, Kew, Imperial Mycological Institute, 1945, 2d ed. 3, Anastasiou, C.J. The biology of Melanconis thelebola (Fr,) Sacc. and i t s associated aanker on Alnus oregona Nutt, Thesis in the Department of Botany, Univ. British Columbia, unpublished, 1952. 4, Bailey, L.H. Manual of Cultivated Plants. New York, Macmillan, 1949. 5, Bisby, G.R., et a l . The fungi of Manitoba and Saskatchewan, Ottawa, National Research Council, 1938, 6, Brandriff, Helen. The development of the ascocarp of Acrospermum compressum, Mycol, 28 : 228-235,'1936© 7© Cain, R.F. Studies of coprophilous Sphaeriales in Ontario, Univ. Toronto Studies, Biol.Ser.No.38. 1934o 8. Cash, Edith K, and Davidson, Ross W» Some new species of Ascamycetes on coniferous hosts. Mycol. 32: 728-735. 1940© 9. Child, Marion. The genus Daldinia. Ann. Mo.Bot.Gard. 19: 429-496. 1932© 10. Chivers, A.H. A monograph of the genera Chaetomium and Ascotricha. Torrey Bot. Club Mem. 14 (3): 155-240. 1915. 11. Clements, Frederic E. and Shear, Cornelius L. The genera of fungi. New York, H.W.Wilson Company, 1931 12. Conners, I.L. Annual report of the Canadian Plant Disease Survey. (9th and 11th to 21st reports©) Can.Dept.Agr., Ottawa, 1929, 1931-1941© 13. and Eardley, E.A. Annual report of the Canadian Plant Disease Survey (10th report). Can.Dept.Agr., Ottawa, 1930. 229. 14. Conners, I.L. and Savile, D.B.O. Annual report of the Canadian Plant Disease Survey (22nd to 29th reports). Can.Dept. Agr,., Ottawa, 1942-1949. 15. Cooke, Wm.Bridge. Western fungi - I. Mycol. 41: 601-622. 1949. 16. Davidson, John, et. a l . British Columbia. In Naturalist's Guide to the Americas. Baltimore, Williams & Wilkins Company, pp. 150-168. 1926. 17. Dearness, John. New or noteworthy species i f fungi. Mycol. 8: 98-107. 1916. 18. • New or noteworthy North American fungi. Mycol. 9: , 345-364. 19171 19. Drayton, F.L. A summary.of the prevalence of plant diseases in the Dominion of Canada 1920-1924. Can.Dept.Agr. Bull. 71. n.s. Ottawa, 1926. 20. E l l i s , J.B. and Everhart, B.M. New species of fungi from various l o c a l i t i e s . Journ.Mycol. 3: 116-118, 188B. .21. ' . - • New North American fungi. Proc. Acad.Nat.Sci.Phila. 1890: 219-249. 1891, 22. •_ The North American Pyrenomycetes,. Newfield, N.J. 1892. 23. . New species of fungi from various l o c a l i t i e s . B u l l . Torr. Bot.Club 25: 501-514. 1898. 24. Faull, J.H. and. Graham, G.H. Bark disease of the chestnut in British Columbia. Forestry Quarterley 12: 201-203. 1914. 25. Fitzpatrick, Harry Morton. Revisionary studies in the Coryneliaeeae. II. The genus Caliciopsis. Mycol. 34: 489-514. 1942. 230. 26«.Griffiths, David. Contributions to a batter knowledge of the Pyreno-mycetes. - I: A study of miscellaneous species. B u l l . Torr. Bot.club. 26: 432-444. 1899. 27. G__ The North American Sordariaceae. Torrey Bot. Club Mem. 11: 1-34. 1901. 28. Groye3i*„J.Walton. A new species of Claviceps on Carex. Mycol. 35: 694-609. 1943. 29. Kauffman, C.H. The fungus flora of Mt. Hood, with some new species. Mich. Acad, Sci, (Papers) 5: 115-148. 1925. 30. Lind, J . Micromycetes from north-western Greenland found on plants collected during the Jubilee Expedition, 1920-23. Meddel, cm Groenl. 69: 161-179. 1926. 31. The Micromycetes of Svalbard. Skrifter om Svalbard og Ishavet. 13. 1928. 32. Lindau, G. Pyrenomycetineae, In Engler and Prantl's Die naturlichen Pflanzenfamilien. Leipzig, Wilhelm Engslmann, 1897. pp. 321-491. 33. Mains, E.B. New and interesting species of Cordyceps. Mycol. 39: 535-545. 1947. 34. Martin, G.Hamilton and Charles, Vera K. Preliminary studies of the l i f e history of Erostrotheca multiformis, the perfect stage of Cladosporium album Dowson. Phytopath. 18: 839-846. 1928. 35. McCurry, J.B. Report on the prevalence of plant diseases in the Dominion of Canada for the years 1927 and 1928. Can.Dept.Agr.. Ottawa, 1928. 36. and Hicks, A.J. Fifth annual report on the prevalence of plant diseases in the Bominion of Canada. Can.Dept.Agr0 Ottawa, 1925, 231. 37. Migula, W. Kryptogaman-Flora, In Dr. Thome's. Flora von Deutschland, Osterreich und der Schweiz. Gera, Friedrich von Zezschwitz, 7ol.HI,. Part 3, Divisions .1 and 2. 1913. 38. Miller, Julian H. Biologic studies in the Sphaeriales - I I . Mycol. 20: 305-^339. 1928. 39. t_ Same new species of Hypoaylon. Mycol. 25 : 321-329. 1933. 40.. • Georgia Pyrenomycetes. I I . Mycol. 33: 74-81. 1941. 41. . . • Letter to the writer, June 12, 1952. 42. Orton, C.R. Graminicolous species of Phyllachora in North America. • Mycol. 36: 18-54. 1944. 43. Peck, Morton Eaton. A manual of the higher plants of Oregon. Portland, Oregon, Metropolitan Press. 1941. 44, Saccardo, P.A. Sylloge Fungorum. I. Pyrenomyceti. 1882. Pata 711, II. Pyrenomyceti. 1883. Pata 711. Additamenta ad I - 17. 1886. Pata .711. IX. Supplementum Universale I. 1891. Pata 711. XT. Supple-mentum Universale III. 1895. Pata 711. XI7. Supplementum Universale 17. 1899. Pata 711. XVI. Supplementum Universale 7. 1902. Pata 711. XVII. Supplementum Universale. VI. 1905. Pata 711. XXII. Supple-mentum Universale IX. 1913, Pata 711, XXI7, Supplementum Univer-sale. X. Sectio I. 1926, A b e l l i n i . Sectio • II. 1928. Abe l l i n i . 45, Salmon Ernest S. A monograph of the Erysiphaceae. Torrey. Bot. Club Mem. 9: 1-292. 1900. 46, Seaver, Fred J. Hypocreales. North Am. Flora, 3(1): 1-56. 1910, 47, Seymour, Arthur B l i s s . Host index of the fungi of North America. Cambridge, Harvard University Press. 1929, 48. Shear, Cornelius Lott, New species of fungi. Bull. Torrey Bot.Club 34: 305-317. 1907. 232. 49. Stace-Smith, Richard. A study of the black knot disease of plums. Thesis in the Department of Agriculture, Univ. British Columbia, unpublished. 1950. 50. Stevens, Neil E. Two apple black rot fungi in the United States. Mycol. 25: 536-548. 1933. 51. Waterman, Alma M. Tip blight of species of Abies^eaused by a new species of Rehmiellopsis. Journ. Agr.Res..70: 315-338. 1945. 52. Welch, Donald Stuart. A monographic study of the genaa Cucurbitaria in North America. Mycol. 18: 51-86. 1926. 53. Wehmeyer, Lewis E. A biologic and phylogenetic study of the stromatic Sphaeriales. Am. Journ. Bot. 13: 575-645. 1926. 54. - The genus Diaporthe Nitschke and i t s segregates. Univ. Mich. Studies. Scien. Series. 9: 1-349. 1933. 55. Studies on some fungi from Northwestern Wyoming. I. Pyrenomycetes. Mycol. 38: 144-170. 1946. III. Pleospora and Leptosphaeria. Lloydia (9:e203-240. 1946. 56. Studies in the genus Pleospora. I. Mycol. 41: 565-593. 1949. III. Mycol. 43: 34-53. 1951. 17. Mycol. 43: 570-589. 1951. 57. The fungi of New Brunswick, Nova Scotia and Prince Edward Island. Ottawa, National Research Council. 1950. 58. Letter to the writer, May 19, 1952. 59. Winter, Georg. Ascomyceten: Gymnoasceen and Pyrenomyceten In Die P i l z e . Rabenh. Krypt.-Flora Deutsch. Oestwrro Schweiz. 1(2): 1-928. Leipzig, Eduard Kummer. 1887. 60. Wolf, Frederick A. Morphology of Peiythrincium, causing sooty blotch of clover. Mycol. 27: 58-73. 1935. 233© INDEX OP GENERA AND SPECIES Acanthonitschkea Speg. 65 coloradensis Cash & Davidson 65 Acanthorhynchus Shear 53 vaccinii Shear 53 Acrospermum Tode ex Fr,, 37 compressum Tode 37 Apioporthe Hohn© 153 vepris (De Lacr.) Wehme 154 Apiosporella Hohn, 102 alpina Wehm. 102 Apiosporina.Hohn0 57 Co l l i n s i i (Schw9) Hohn. 57 Ascospora Fr, - 73 graminis Lind 74 Ruborum (Oud,) Seller 74 Asterella Sacc* 32 Gaultheriae (Curt.) Sacc, 32 THellebori Rehm 33 Asterina Lev, 33 rubicola Ell© & Ev„ 33 Asterula Sacc© 33 sp© 33 Bertia de Not© 61 moriformis (Tode) de Not, 61 234. Bombardia Fr« 53 ambigua Tar. carbonaria Rehm 54 Caliciopsis Pk. 67 Pseudotsugae Fitzp. 67 Calosphaeria Tul. 164 princeps Tul. 165 Capronia Sacc. 102 pleiospora (Mout.) Sacc. 103 Catharinia, see Pleospora Ceratostomella Sacc. 64 sp. 65 Chaetomium Kunze 51 cochliodes P a l l . 52 ?spirale Zopf. 52 Clathrospora. see Pleospora ClaTiceps Tul. 44 Grohii GroTes 44 purpurea Tul.. 45 Coleroa (Fr.) Rab. 58 Chaetomium (Kunze) Rab. 58 Oxyriae Rostr. 58 Coniochaeta Sacc. 61 leucoplaca (Berk. & RaT.) Cain 61 Cordyceps (Fr.) Link 45 myrmecophila Ces. 46 Creoneetria SeaTer 38 coccinea (Pers.) SeaTer 38 235, Creonectria conte Cucurbitula(Sacc) Seaver 39 mammoidea (Phil, & Plow,) Seaver 39 pithoides ( E l l , & Ev.) Seaver 39 purpurea (L.) Seaver 40 sp, 40 Cryptodiaporthe Petrak 154 Macounii (Dear,) Wehm, 154 salicina (Curr,) Wehm. 155 Cryptosphaeria Nitschke 155 populina (Pers,) Sacc, 155 Cueurbidothis Petrak 48 pithyophila (Fr,) Petrak 48 Cymadothea Wolf 49 T r i f o l i i (Pers.) Wolf 49 Daldinia Ces, & de Not, 160 concentrica (Bolt,) Ces, & de Not, 169 occidentale Child 169 Diaporthe Nitschke 156 A r c t i i (Lasch,) Nit, 156 eolumbiensis E l l , & Ev» 157 eres Nit, 157 pardolata (Mont,) Fckl, 158 Diatrype Fr, 165 bullata (Hoffm.) Fr. 165 disciformis (Hoffm.) Fr. 166 Diatrype cont© Macounii ELI. & Ev. 166 stigma (Hoffm©) de Not© 166 Diatrypella Ces. & de Not*. 167 betulina Pk. 167 Tocciaeana de Not© 167 Dibotryon Theiss. & Syd. 49 morbosum (Schw©) Theiss© & Syd© 49 Didymella Sacc. 1G3 applanata (Niessl) Sacc. 103 Delphinii Earle t 104 fenestrans (Duby) Wint. 104 Rauii ( E l l . & Ev.) Sacc© 104 T r i f o l i i (Fckl.) Sacc. 105 . Didyraellina Hohn. 105 macrospora ELebahn 105 Didymosphaeria Fckl© 105 ?Borgii Carnana-Gatto & Sacc© 106 oregonensis Goodding 106 Dimeriuijt Sacc. & Syd. 29 alpinum W.B.Cooke 29 Dimerosporium Fckl. 29 Abietis Dear© 30 Tsugae Dear. 30 Endodothella Theiss. & Syd© - 50 Tracyi ( E l l . & Ev.) Theiss. & Syd© 50 Endothia Fr. 168 parasitica (Murr.) A. & A. 168 Epichloe (Fr.) Tul. 46 typhina (Pers.) Tul. 46 Erostrotheca Martin & Charles 37 multiformis Martin & Charles 37 Erysiphe Hedw.f. 18 aggregata (Pk.) Farl. 19 cichoracearum DC/ 19 graminis DC. 20 polygoni DC. 20 Eutypella Nitschke 159 stellulata (Fr.) Sacc. 159 Fene s t e l l a Tulo 159 princeps Tul. 159 Glomerella Schrenk & Spauld. 147 cingulata (Ston.) Schrenk & Spauld. 147 Gnomonia Ces. & de Not. 147 Caryae Fr.A.Wolf 148 depressula Karst. 148 potentillae sp.nov. 149 setacea (Pers.).Ces. & de Not. 149 veneta (Sacc. & Speg.) KLebahn 150 Vepris $but. . 150 Gnomoniella Sacc. • 150 Coryli (Batsch ex Fr.) Sacc. 151 Guignardia Viala & Ravaz 74 Bidwellii (ELI.) Viala & Ravaz 75 circumtegens Rostr. 75 Guignardia conta graminicola Rostra 75 Potentillae (Ro3tr.) Lindau 75 ?Yaccinii Shear 76 Herpotrichia Fckla 58 nigra Hartig 58 Herpotrichiella Petrak 59 sp. - 59 Hypocopra Fr. 54 gigaspora ( E l l . & Ev.) Griff i t h s 64 Hypomyces (Fr.) 22ul. 46 aurantius (Pers.) Tul. 47 Lactifluorum (Schw.) Tul. 47 Hypoxylon Fr. 170 aspera Mass. 170 atropurpureum Fr. 172 Cine re o-l ilac inum Mil l e r 172 eoncurrens B. & C. 173 Crustaceum Nit» 173 fuscum (Pers.) Fr. 171 multiforme Fr. 171 perforatum (Schw.) Sacc. ' 173 rubiginosum Fr. 173 ?pruinatum (KLotsche) Cke. 173 serpens Pers. ex Fr. var. macrosporum M i l l . 172 ustulatum (Bull.) Fr. 172 vogesiacum Pers. ex Saev© 172 239. Laestadia, see Guignardia Leptosphaeria Ces. & de Not© 106 agnita (Desm.) Ces. & de Not. 108 Andromedae (Awd.) Sacc. 108 ?Apogon Sacc. & Speg. 109 Californiea (Cke. & Hark.) Sacc. 109 Camellias Cooke & Mass. 109 coniothyrium (Fckl.) Sacc. 109 consobrina Karst. 110 culmicola (Fr.) Awd. 110 culmifraga (Fr.) Ces. & de Not. 110 culmorum Awd. I l l dumetorum Niessl 112 epicarecta (Cke.) Sacc. 112 eustoma (Fr.) Sacc. 112 Gaultheriae Dear. 112 T L o l i i Syd. ' 113 petkovicensis Bubak & Ranojevic 113 pratensis Sacc. & Br. 113 Silenes-aeaulis de Not. 114 tenera E l l i s 114 Typhae Karst. 114 typhicola Karst. 114 sp. 114-116 Leptosphaerulina McAlpine 76 sp. 76 Linospora Fckl. ?insularis Johans, sp, Lophiostoma Fr, appendiculatum Fckl, caulium (Fr.) de Not, Lophiotrema Sacc. aequivocum E l l , & Ev, . ?nucula (Fr.) Sacc, Mam&ania, see Gnomoniella Massaria de Not, macrotheca (Rostr.) Lind Massarina Sacc. Dryadis Rostr. sp. Melanconis Tul, alni Tul. thelebola (Fr.) Sacc, Melanomma Fckl, cinereum (Karst.) Sacc, parasiticum E l l . & Ev. pulvis-pyrius (Pers,) Fckl. Melanospora Corda papillata Hot son Townei G r i f f i t h s 241, Metasphaeria Sacc. 117 Macounii Dear. 117 Poae (Niessl) Sacc. 117 ?Zobeliana Staritz 118 Microsphaera Lev. 21 alni (Wallr.) Salm. 22 alni var. lonicerae (DC.) Salm. 22 alni var. vaccinii (Schw.) Salm. 22 diffusa Cke. & Pk* 22 Mfcrothyrium Desm. 34 arcticum Oudem. 34 Juniperi (Desm.) Sacc. 35 Tmicroscopicum Desm. 35 Mycosphaerella Johans. 76 arbuticola (Pk.) House 80 ?Auerswaldii (Fleischh.)Migula 80 brassicicola (Duby) Lindau 80 ca::l caricicola (2?ckl.) Lindau 81 Chimaphilae E l l . & Ev. 81 cinerascens (Fckl.) Migula 81 coerulea ( E l l . & Ev.) Tracy & Earle 81 confinis (Karst.) Lind 82 dolichospora (Sacc. & Fautre) Wehm. 82 earliana Wint. 82 eriophila (Niessl) Dear. 83 Fragariae (Tul.) Lindau 83 graminicola (Fckl.) Schroet. 83 242. Mycosphaerella cont. Grossulariae (Fr.) Lindau 83 indistincta (Pk.) Lindau 84 innumerella Karst. 84 lineolata (Rob.& Deam.) Schroet. 84 melaena (Fr.) Sacc. 84 microspila (B. & Br.) Cke. 85 minor (Karst.) Lindau 85 orbicularis (Pk.) House 85 Pachystimae Dear. 85 perexigua (Karst.) JTohans. 86 pinodes (B. & Blox.) R.E.Stone 86 Polygonorum (Crie) Lind 86 populifolia (Cke.) House 86 punctiformis (Pers.) Schroet. 87 punctifomis var. Clematidis Jaap 87 p u s i l l a Awd. 87 Ranunculi (Karst.) Lind 88 rosicola (Pass.) Davis 88, rubi Roark 88 sagedioides (ffint.) Lindau 88 stromatoidea Dear. 89 Tassiana (de Not.) Cohans. 89 Typhae (Lasch.) Lindau 96 vagans E l l . & Ev. 96 Wiehuriana (Schroet.) Johans. 96 sp. 97 243. Nectria Fr. 41 episphaeria (Tode) Fr. 42 galligena Bres* 42 sanguine a, Fr. 42 Nectriella Fckl. 43 sp. 43 Ophiobolus Riess. 118 acuminatus (Sow.) Duby 118 cariceti (Berk. & Br.) Sacc. 119 minor Bubak 119 porphyrogonus (Tode) Sacc. 119 Rostrupii Ferdin. & Winge 120 rudis (Riess.) Rehm 120 Otthia Nitschke 66 sp. 66 P e t r i e l l a Curzi 30 asymmetrica Curzi 30 Phaeoeryptopus Naumoff 31 gaumannii (Rohde) Petrak 31 Phaeosphaerella Karst. 98 maculosa (Sacc.) Karst. 98 Phomatospora Sacc. 120 ?argyrostigma (Berk.) Sacc. 121 therophila (Desm.) Sacc. 121 Phyllachora Nitschke 50 graminis (Pers.) Fckl. 50 si l v a t i c a Sacc. & Speg. 50 244a Phyllactinia Lev. 22 corylea (Pers.) Karst. 25 Physalospora Niessl 121 Miyabeana Fukushi 121 sp. 122 obtusa (Schw.) Cke. 122 Pleosphaeruliaa Pass. 98 constricta (Starb.) Sacc. 98 Pleospora Rab. c 122 ambigua (Berl. & Bres.) Webm. var. Crandallii ( E l l . & Bv.) Wehm. 126 angustata Wehm. : 126 arctiea Karst. 126 asymmetrica Wehm. 127 B§ccata E l l . 127 Balsamorrhizae Tracy & Earle 128 coloradensis E l l . & Ev. 128 comata Niessl. 129 Compositarum Earle 150 diplospora E l l . & Sv. 130 discors (Mont.) Ces. &'de Not. 151 Elynae (Rab.') Ces. & de Not. 131 helvetica Niessl 131 herbarum (Pers.) Rab. ' 132 herbarum f a r . occidentalis Wehm. 133 infectoria Fckl. 135 macrospora Schroet. ' 155 245. Pleospora cont. njegusensis Bub. 134 oligasca Bub. 134 pentamera Karst. 135 permunda (Cke.) Sacc. 136 planispora E l l . 136 Tragacanthae Rab. 136 trichostoma (Fr.) Ces. & de Not. 137 vulgaris Niessl. 138 sp. , 138-140 Plowrightia, see Dibotryon Podosphaera Kunze 23 leucotricha ( E l l * & Ev.) Salm. 24 oxyaeanthae (DC.) de Bary 24 Protoventuria Berl* & Sacc. 140 vancouverensis Dear. 140 sp. 140 Pseudoplea Hohn. 99 T r i f o l i i (Rostr.) Petrak 99 Pyrenophora, see Pleospora Rehmiellopsis Bubak & Kabat 99 abietis (E.Rostr.) 0.Rostr* 99 Rosellinia Ces. & Sie Not. 63 obliquata (Somm.) Sacc. var. Americana E.& E. 63 ovalis (Ell.) Sacc. 64 thelena (Fr.) Rab. var. pinea Sacc. 64 246. Sordaria Ces. & de Not. 55 flmicola (Rob.) Ces. & de Not. 55 hypocoproides Spegg 56 setosa Wint. 56 Spermoedia, see Claviceps Sphaerella, see Mycosphaerella Sphaerotheca Lev. 24 hjnauli (DC.) Burr. 25 humuli var. fuliginea (Schlecht.) Salm. 26 mors-uvae (Schw.) Berk. & Curt. 26 pannosa (Wallr.) Lev. 26 Sphaerulina Sacc. 99 Alni A.Lorr.Smith forma minor fm. no v. 100 Gentianae Wehm. 100 , Stigmatea Fr, 35 Robertiani Fr. 35 Strickeria Korber 68 Amelanchieris Earle 68 obducens (Fr.) Wint. 89 Typhina.Ell. & Ev. 69 Teichospora, see Strickeria Trematosphaeria* Fckl. 70 ?fissa (Fckl.) Wint. 70 Trichosphaeria Fckl. 60 breviseta Dear. 60 Typhodium, see Epichloe 247 6 Uncinula Lev. 27 aceris (DC.) Sacc. 27 circinatum Cke. & Pk. 27 necator (Schw.) Burr* 28 sa l i c i s (DC.) Wint. 28 Ustulina, see Hypoxylon Yalsa Fr. 160 atoMens (Pers.) Fr. 161 ceratophora Tul. 161 leucostoma (Pers.) Fr. 161 nivea (Hoffm.) Fr. 161 Pin i (Alb. & Schw.) Fr. 162 sp. 162 Venturia Ces. & de Not. 141 atriseda Rehm 142 7Cassandrae Pk. 142 chlorospora (Ces.) Karst. 142 Dickiei (B. & Br.) de Not. 142 inaequalis (Cke.) Aderh. 143 m y r t i l l i Cke. 143 pyrina Aderh. ' 143 Rumicis (Desm.) Wint. 144 sp. 144 Xylaria H i l l , ex Grev. 173 Hypoxylon (L.) Grev. 173 PLATES AND EXPLANATION PLATE I Representative asci or spores of each species were drawn by camera lucida, to scale, as indicated, in order to illustrate the descriptions. F i g . l . Ascus of Erysiphe aggregata (Pk.) Earl. Fig.2. Ascus of E. cichoracearum DC. Fig.3. Immature ascus of E. graminis DC. Fig.4. Ascus of E. polygoni DC. Fig.5. Appendage and ascus of Microsphaera alni (Wallr.) Salm. Fig.6. Appendage and ascus of M. a l n i var. lonicerae (DC.)Salm. Fig.7. Appendage and ascus of M. a l n i var. SBaccinii (Schw.) Salm. Fig.8. Ascus of M. diffusa Cke. & Pk. Fig.9. Ascus of Phyllactinia cbrylea (Pers.) Karst. Fig.10. Ascus of Podosphaera leucotrieha (EM;. & Ev.) Salm. F i g . l l . Ascus of P. oxyacanthae (DC.) de Bary. Fig.12. Ascus of Sphaerotheca humuli (DC.) Burr. Fig.13. Ascus of S.  humuli var. fuliginea (Schlecht.) Salm. Fig.14. Appendage and ascus of Unelfiula Aceris (DC.) Sacc. Fig.15. Ascus of U. necator (Schw.) Burr. Fig.16. Ascus of U» s a l i c i s (DC.) Wint. Fig.17. Ascus and spore of Dimerium alpinum W.B.Cooke© Fig. 18. Ascus and spore of Dimerosporium Abietis Dear. Fig.19© Ascus and spore of P. Tsugae Dear. Fig.20. Ascus and spores of Pe trie 11 a asymmetrica fflurzi. Fig.21. Ascus and spore of Phaeocryptopus gaumannii (Rohde) Petrak© Fig.22© Ascus and spore of Asterella Gaultherias (Curt.) Sacc. Fig.23© Spores of A. ?Hellebori Rebm. Fig.24. Ascus and spores of Asterina  rubicola E l l . & Ev© Fig.25© Ascus and spores of Mierothyrium PLATE I cont. arc t i cum Qadenu Fig.26. Ascus and spore of M. Juniperi (Desm.) Sacc. Fig.27 B Ascus and spores of Stigmatea Robertiani Fr. Fig.28. Spores of Creonectria coccinea (Pers.) Seav. Fig.29. Spores of C. cucurbitula (Sacc.) Seav. Fig.30. Ascus of C.pithoides (E11.& Ev.) Seav. Fig.31. Ascus of C. purpurea (L.) Seav. Fig.32. Ascus and spore of Creonectria sp. Fig.33. Ascus and spores of Melanospora papillate Hotson. Fig.34. Spore of M. Townei G r i f f i t h s . Fig.55. Ascu3 of Nectria episphaeria (Tode) Fr. Fig.36. Spores of No galligena Bres. Fig.37. Ascus of No sanguinea Fr, Fig.38. Ascus and spores of Nectriella sp. Fig.39. Ascus of Claviceps Grohii Groves. Fig.40. Spores of C. purpurea Tul. Fig.41. Ascus and spore of Hypomyces aurantius (Pers.) Tul. Fig.42. Spore of Ho Lactifluorum (Schw.) SSul. PLATE I PLATS II F i g . l . Ascus and spores of Cucurbidothis pithyophila (Fr.) Petrak. Fig«2. Ascus and spore of Dibotryon morbosum (Scbw.) Tbeiss. & Syd. Fig.3. Ascus and spores of Pbyllachora graminis (Pers.) Fckl. Fig.4. Ascus and spore of P. s i l v a t i c a Sacc. & Speg. Fig.5« Ascus and spores of Dothideaceae indet. Fig«6. Spores of Chaetcmimn  cocbliode3 P a l l . Flg.7. Spores of C. ?spirale Zopf. Fig.8. Ascus of Aoanthorhyncbus vaccinii Shear. Fig.9. Immature and mature spores of Bombardia ambigua var. carbonaria Rehm. Fig.10. Ascus of Sordaria flmicola (Rob.) Ces.& de Not. F i g . l l . Spores of S.  hypocoproides Speg. Fig.12. Spores of S. setosa Wint. Fig.13. Ascus and spore of Apiosporina C o l l i n s i i (Schw.) Hohn. Fig.14. Ascus and spores of Coleroa Chaetomium (Kunze) Rab. Fig.15. Ascus and spore of C. Oxyriae Rosts. Fig.l6o Ascus and spore of Herpo- triehia nigra Hartig. Fig,17. Ascus and spores of Herpotrichiella sp. Fig.18. Ascus of Trichosphaeria ?breviseta Dear. Fig.19. Ascus and spore of Bertia moriformia (Tode) de Not. Fig.20. Ascus of Coniochaeta leucoplaca (Berk. & Rav.) Cain. Fig.21. Spores of Melanomma cinereum (Karst.) Sacc. Fig,22. Ascus and spore of M. parasitieum £11. & Ev. Fig.23. Ascus and spore of M» pulvis- pyrius (Fers.) Fckl. Fig©24. Ascus and spores of Rosellinia  obliquata (Somm.) Sacc. var. Americana E l l . & Ev. Flg.25. Ascus and spore of R. ovalis (Ell.) Sacc. Fig.26. Spores of Cerato- stomella sp. Fig.27. Ascus of Acanthonitschkea coloradensis Cash PLATE II cont. & Davidson. Fig. 28. Ascus and spore of Otthia sp. Fig.29. Ascus and spores of Caliciopsis pseudotsugae Fitzp. Fig.30. Spores of Striekeria Amelanchieris Earle. Fig.31. Ascus of S. obducen3 (Fr.) Wint. Fig.32. Spore of S. Typhina (EL1.& Ev.) Fig.33. Spores of Trematosphaeria ?fissa (Fckl.) Mint* Fig.34. Ascus and spore of Lophiostoma appendiculatum Fckl. Fig. 35. Spores of L. eaulium (Fr.) de Wot. Fig»36. Ascus and spore of Lophiotrema aequivocum E l l . & Ev. Fig.37. Ascus and spore of L. ?nucula (Fr.) Sacc. PLATE II PLATE III F i g . l . Ascus and spore of Ascospora graminis J.Lind. Fig.2. Ascus and spores of ?Laestadia circumtegens Rostr. Fig.3. Ascus and spore of L. graminicola Rostr. Fig.4. Ascus and spores of Guignardia Potentillae (Rostr.) Lindau. Fig.5. Ascus and spore of G. ?Vaeoinii Shear. . Fig.6. Ascus and spores of Leptosphaer- ulina sp. Fig.7. Ascus of Mycosphaerella arbuticola (Pk.) House. Fig»8. Asuus and spore of M. ?Auerswaldil (Fleischh.) Mig. Fig.9. Ascus and spore of M. brassicicola (Duby) Lindau. Fig.10. Ascus and spore of M. oaricicola (Fckl.) Lindau. F i g . l l . Ascus and spore of M. Chimaphilae E11.& Ev. Fig»12. Ascus and spores of M.  cinerascens (Fckl.) Mig. Fig.13. Ascus and spore of M. coerulea (E11.& Ev.) Tracy & Earle© Fig.14. Ascus and spore of Me confinis (Karst.) Lind. Fig.15. Ascus and spore of M. dolichospora (Sacc. & Fautre) Wehm. Fig.16. Ascus and spores of M. earliana Wint. Fig.17. Ascus and spore of M. eriophila (Niessl) Dear. Fig.18. Ascus and spores of M. Fragariae (Tul.) Lindau. Fig.19. Ascus and spore of M. graminicola (Fckl.) Schroet© Fig.20. Ascus and spore of M. indistinct a (Pk.) Lindau. Fig.21. Ascus and spores of M. innumerella Karst. Fig.28. Ascus and spore of M. lineolata (Rob. & Desm.) Schroet. Fig.23. Ascus and spores of M»melaena (Fr.) Sacc. Fig.24. Ascus and spores of M. microspila (B.& Br.) Cke. Fig.25© Ascus and spores of M. minor (Karst.) Lindau© Fig© 26. Ascus and spores of M. orbicularis (Pk.) House. Fig.27© Ascus PLATE III cont and spore 8 of Ma Pachystimae Dear a Fig.28 0 Ascus and spore of M. perexigua (Karst*) Johans. fig.29. Ascus and spore of M.  Polygonorum (Crie) Lind. Fig.30. Asciis and spore of M. populi-f o l i a (Cke.) House. Fig.31. Ascus and spore of M. punctiformis (Pers.) Schroet. Fig.32. Ascus and spores of M. punctiformis var a  Clematidis Jaapo Fig.33. Ascus and spores of Me puailla Awd. Fig. 3&. Ascus and spores of M» Ranunculi (Karst) Linda Fig.35. Ascus and spores of M. sagediaflea (Wint.) Lindau 0 Fig 036. Ascus and spore of M. stromatoidea Dear. Fig.37. Ascus and spore of M. Tassiana (ia Not.) Johans., sea l e v e l . Fig.38. Ascus and spore of M.Tassiana (de Note) Johans., high altitude. Fig.39. Ascus and spores of M. Typhae (Lasch.) Lindau. Fig.40. Ascus and spores of Ma vagans E11.& Ev. Fig.41. Ascus of Me Wichurlana (Schroet.) Johans., Fig.42. Ascus and spore of M. sp. on Salix. Fig.43. Ascus and spore of M.tsp. on Sambucus. Fig«44. Ascus and spore of M.ap. on Sanicula. Fig.45. Ascus of M.sp. on Silene e Fig.46. Ascus and spore of M.sp. on Thuja a Fig.47. Ascus and spore of Phaeosphaerella maculosa (Sacc.) Karst. Fig.48. Ascus and spores of Pieosphaerulina constricta (Btarb.) Sacc. Fig.49e Ascus and spore of Pseudoplea T r i f o l i i (Rostr.) Petrako Fig.50e Ascus and spore of Sphaerulina Alni A.Lorr.Smith fm» minor, fm.nov. Fig.51e Spore of Se Gentianae Wehm. Fig.52. Ascus and spores of Apiosporella  alpina Wehm. Fig.53. Ascus and spores of Capronia pleiospora (Mout.) Sacce Fig.54 e Ascus and spore of Didymella applanata (Niessl) Sacc. Fig.55. Ascus and spores of D. Delphinii Earlea ELATE III PLATE IV F i g . l . Ascus and spore of Didymella fenestrans (Duby) Wint* Fig. 2. Ascus and spores of Do Rauii ( E l l . & Ev.) Sacc. Fig.3a Ascus and spores of D. T r i f o l i i (Fckl.) Sacc. Fig . 4 . Ascus and spore of Didymosphaeria oregonensis Goodding. Fig . 5 . Ascus and spores of P. ?Borgii Carnana-Gatto & Sacc, Fig 0 6 . Ascus and spore of Leptosphaeria agnita (Desm©) Ces.& de Not. Fig.?. Ascus and spore of L. Andromedae (Awd.) Sacc* Fig 0 8 . Spores of L. ?Apogon Sacc. & Speg. Fig.9. Sporea of L. Californiea (Cke.& Hark.) Sacc. Fig .10. Spore of L. consobrina Karst. Figells Spores of L. culmicola (Fr.) Awd. Fig .12. Spore of L. culmifraga (Fr.) Ces. & de Not. Fig .13. Spore of L. culmorum Awdo Figolft. Ascus and spore of L. dumetorum Niessla Fig. 15. Spores of L. epicarecta (Ckd.) Sacc. Fig .16. Spores of L* eustoma (Fr.) Sacc. Fig .17. Spore of L.TLolii Syd. Fig.18. Spore of L. petkovicensis Bub. & Ran. Fig .19. Spores of L. Silenes-acaulis de Not 8 Fig .20. Spores of L. tenera E l l . Fig© 21. Spores of L. Typhae (Auersw.) Karst. Fig .22. Spores of L. typhicola Karst. Fig.23. Spore of L. sp. on Arenaria. Fig.24. Spore of L. sp. on Arnica. Fig. 25, Ascus of L.sp. on Festuca. Fig .26. Spores of L.sp. on Ledum and Salix© Fig.27. Spores of L.spa on Ledum a Fig.28. Spore of L.sp. on Oxytropis. Fig.29© Spores of L.sp. on Poa. Fig©30© Sporea of Metasphaeria Macounii Dear© Fig©31. Ascus and spores of M. Poae (Niessl©) Sacc© Fig© 32© Spores of M. ?zobeliana Staritz. Fig .33. Ascus of Ophiobolus acuminatus (Sow.) Duby. Fig.34© Ascus and spore of 0. Minor Bub. PLATE IV cont a Fig .35. Ascus of Oa porphyrogonus (Tode) Sacc. F i g s 36. Ascus of Oa Rostrupii Fer.& VJinge. Fig. 37. Spore fragments of 0. rudis (Riess.) Rehme Fig .38. Spores of Phomatospora ?argyrostigma (B.) Sacc, Fig. 39. Ascus and spore of P.therophila (Desme) Sacc. Fig.40e Ascus and spore of Physalospora Miyabeana Fukushi. Fig. 41. Ascus of Pa spa on Aplopappus a Fig .42. Ascus of P. sp a on Festuca. Fig .43. Ascus and spore of Pleospora ambigua (Berl. & Bres.) Wehm. var. Crandallii (E11.& Ev.) Wehm. Fig .44. Ascus and spore of P. angustata Wehm. Fig .45. Spores of P. arctica Karst. Fig .46. Spore of P. asymmetrica Wehm. Fig .47. Spores of P. baccata E l l . Fig.48. Spore of P. Balsamorrhizae Tracy & Earle. Fig.49. Spore of P. coloradensis ELI. & Ev. Figa50a Spore of Pa comata Niessl. Fig .51. Spore of P. Compositarum Earle. Fig.52. Spores of P. diplospora ELI. & Ev. PLATE IV PLATE V F i g . l . Ascus and spore of Pleospora diseors (Dur. & Mont.) Ces.fc de Not. Fig . 2 . Spore of P. Elynae (Rab.) Ces. & de Not© Fig . 3 . Spore of P. helvetica Niessl. Fig . 4 . Spore of^P. herbarum (pera.) Rab. Fig.5o Spores of P. herbarum var. occidentalis Wehm. Fig. 6. Spore of P. infectoria Fckl. Fig . 7 . Spore of P. macrospora Schroet. Fig . 8 . Spore of P. njegusensis Bub. Fig . 9 . Ascus and spore of P. oligasca Bub. Ftg.10, Spores of P. pentamera E l l . F i g . l l . Spores of P. permunda (Cke.) Sacc. Fig .12. Spore of P. planispora ELI. Fig .13 . Spores of P. Tragacanthae Rab. Fig. 14. Spores of P. vulgaris Niessl. 15. Spores of P^ (Catharinia)  sp. Fig .16. Spores of P.sp. on Carex. Fig .17. Spores of P.sp. on Poa. Fig .18. Spore of P.sp. on Agrostis. Fig .19. Spores of P.sp. on flaillardia. Fig.20. Spores of P.sp. on Oxytropis. Fig. 21. Spores of P.sp. on Syringa. Fig .22. Spores of P.sp. on Agropyron and Trisetum. Fig.23© Ascus and spore of Protoventuria sp. Fig .24. Ascus and spore of Venturis atriseda Rehm. Fig .25. Ascus and spore of V. ?Cassandrae Pk. Fig .26. Ascus and spore of V. chlorospora (Ces.) Aderh. Fig .27. Ascus and spore of V. Dickiei (B.& Br.) Ces. & de Not. Fig .28. Ascus and spores of V. m y r t i l l i Cke. Fig© 29© Ascus and spore of V. pyrina Aderh. Fig .30. Ascus and spore of V. Rumicis (Desm.) Wint. Fig .31 . Ascus and spore of V. sp. on Aplopappus. Fig. 32© Ascus and spore of V. sp. on Astragalus© Fig,33© Ascus and spore of V. sp. on Fenstemon. Fig. 34. Ascus and spore of V.sp. on Phacelia© Fig©35. Ascus and spore PLATE 7 cont of Massaria macrotheca (Rostr.) Lind. Fig. 36. Spore of Massarina  Dryadis Rostr. Fig.37. Ascus and spores of Massarina sp. Fig.38* Ascus and spore of Gnomonia Caryae Fr«A.Wolf • Fig.39. Ascus and spore of G. depressula Karst. Fig.40. Ascus and spores of G.  setacea (Pers.) Ces. & de Not. Fig.41. Ascus and spores of G.  potentillae sp.nov© Fig.42. Ascus and spore of G. Tepris Mout. Fig.43. Ascus and spore of Gncmoniella Coryli (Batsch.) Sacc. Fig.44. Spore of Linospora ?3:nsularUC J p h k ' T i s . Fig.45. Ascus and spores of Apioporthe vepris (DeLacr.) Webm. Fig.46. Ascus and spores of Cryptodiaporthe salicina (Curr.) Webm. Fig.47. Ascus and spores of Cryptosphaeria populina (Pers.) Sacc. Fig. 48. Ascus and spores of Diaporthe A r c t i i (Lasch.) Nit. Fig.49. Spore s of D. columbiensis E l l . & Ev. PLATE V PLATE' VI F i g . l . Ascus and spores of Diaporthe eres Nit* Fig.2. Ascus and spores of D. pardolata (Mont.) Fckl. Fig.3. Ascus and spores of Eutypella stellulata (Fr.) Sacc. Fig.4. Spore of Fenestella prin- ceps Tul. Fig.5. Ascus and spores of Val3a ambiens (Pers.) Fr. Fig.6. Ascus and spores of V. ceratophora Tul. Fig.7. Ascus and spores of V. leucostoma (Pers.) Fr. Fig.8. Ascus and spores of V. Pini (Alb. & Schw.) Fr. Fig.9. Ascus and spores of V.sp. Fig.10, Ascus and spore of Melanconis alni Tul. F i g . l l . Ascus and spore of M. thelebola (Fr.) Sacc. Fig.12. Ascus and spores of Calosphaeria princeps Tul. Fig.13. Spores of Diatrype bullata (Hoff.) Fr. Fig.14. Ascus and spores of D. disciformis (Hoff.) Fr. Fig. 15. Ascus and spores of D. Macounii E l l . & Ev. Fig.16. Ascus and spores of D. stigma (Hoff.) de Not. Fig.17. Ascus and spores of Diatrypella betulina Pk. Fig»18. Spores of Daldinia concentrica (Bolt.) Ces. & de Not. Fig.19. Spores of Hypoxylon aspera Mass© Fig.20. Ascus and spores of H. fuscum (Pers.) Fr. Fig.21. Spores of H. multiforme Fr. Fig.22. Spores of H. serpens Pers. ex Fr. var. macrosporum M i l l e r . Fig.23. Spores of He u stulatum (Bull.) Fr. Fig.24« Spores of H. vogesiacum Pers. ex Sacc. Fig»25. Ascus and spores of Xylaria Hypoxylon (L.) Grev. *. PLATE TT cont Figures 26 to 46 inclusive are diagrammatic sketches of perithecia, to scale as indicated. Fig.26, Perithecium of Uncinula Aceris (DC.) Sacc. Fig.27. Perithecium of Dimerosporium Tsugae Dear. Fig.28, Perithecium of Microthyrium Juniper! (Desm.) Sacc, Fig.29. Perithecium of Creonectria pithoides ( E l l , & Ev.) Seav, Fig.30, Perithecium of Melanospora Townei G r i f f i t h s . Fig.31, Perithecium, pa r t i a l l y immersed in stroma, of Hypamyces aurantius (Pers.) Tul, Fig.32, Perithecium, erumpent from stroma, of Dibotryon morbosum (Schw.) Theiss. & Syd. Fig,33. Perithecium, with spirally wound appendages, of Chaetomium ?spirale Zopfo Fig.34. Immersed perithecium of Acanthorhyncfau3 vaceinii Shear. Fig.35. Setose perithecium of Coleroa Oxyriae Rostr. Fig.36. Tuberculate perithecium of Bert!a  moriformia (Tode) de Not. Fig,37» Ascocarp of Caliciopsis  Pseudotsugae Fitzp. Fig,38, Perithecium, with compressed ostiole, . of Lophiostoma caulium (Fr,) de Not. Figo39« Erumpent perithecium of Mycosphaerella Tassiana (de Not.) Johans. Fig,40« Perithecium of Sphaerulina Gentianae Wehm. Fig.41. Perithecium of Capronia  pleiospora (Mout.) Sacc. Fig.42. Immersed perithecium of Ophiobolus  acuminatus (Sow.) Duby. Fig.43. Setose perithecium of Pleospora  comata Niessl. Fig.44. Perithecium of Pleospora oligasca Bub. Fig. 45. Beaked perithecium of Gnomonia potentillae sp.nov. Fig. 46. Perithecium, immersed in stroma, of Xylaria Hypoxylon (L.)Grev. PLATE VI 


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