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A monograph of the genus H̲y̲g̲r̲o̲h̲y̲p̲n̲u̲m̲ Lindb.(musci) Jamieson, David William
Abstract
The genus Hygrohypnum Lindb. (Musci) is monographed for the world for the first time. Thirty-nine species and a large number of subspecific taxa recognised at the inception of this study were investigated using traditional tools of herbarium taxonomy, extensive field work throughout North America and the experimental cultivation of ten North American species in a uniform environment. These studies show that Hygrohypnum is a Northern Hemisphere genus, in which the important taxonomic characters are: stem anatomy, shape of the leaf and its apex, leaf concavity, costa structure, alar cell differentiation, length of the marginal leaf cells, sexuality, structure of the perichaetial leaves and the annulus. Based on these characters the following 16 species are recognised: H. alpinum (Lindb.) Loesk., H. duriusculum (De Not.) nov. comb., H. smithii (Sw. in Lilj.) Broth., H. bestii (Ren. et Card.) Holz., H. cochlearifolium (Vent. in De Not.) Broth., H. norvegicum (Schimp.) Amann, H. molle (Hedw.) Loesk., H. styriacum (Limpr.) Broth., H. luridum (Hedw.) Jenn., H. alpestre (Hedw.) Loesk., H. polare (Lindb.) Loesk., H. ochraceum (Wils. ex Turn.) Loesk., H. eugyrium (Schmip.) Broth., H. subeugyrium (Ren. et Card.) Grout, H. montanum (Lindb.) Broth., and H. closteri (Aust.) Grout. Hygrohypnum alpinum and H. styriacum are new in Western North America and H. bestii, known previously as a Western North American endemic, is now shown to be on the Upper Peninsula of Michigan and around the Gulf of St. Lawrence. The taxonomic treatment presents a generic description and keys to the species and provides each species with a description, a discussion of variability and taxonomic matters, illustrations and a distribution map. The status of each excluded taxon is discussed. The generic concept and the possible relationships among the recognised species are examined by comparing the author's opinion with information derived from an ordination and two cluster analyses.
Item Metadata
Title |
A monograph of the genus H̲y̲g̲r̲o̲h̲y̲p̲n̲u̲m̲ Lindb.(musci)
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Creator | |
Publisher |
University of British Columbia
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Date Issued |
1976
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Description |
The genus Hygrohypnum Lindb. (Musci) is monographed for the world for the first time. Thirty-nine species and a large number of subspecific taxa recognised at the inception of this study were investigated using traditional tools of herbarium taxonomy, extensive field work throughout North America and the experimental cultivation of ten North American species in a uniform environment. These studies show that Hygrohypnum is a Northern Hemisphere genus, in which the important taxonomic characters are: stem anatomy, shape of the leaf and its apex, leaf concavity, costa structure, alar cell differentiation, length of the marginal leaf cells, sexuality, structure of the perichaetial leaves and the annulus. Based on these characters the following 16 species are recognised: H. alpinum (Lindb.) Loesk., H. duriusculum (De Not.) nov. comb., H. smithii (Sw. in Lilj.) Broth., H. bestii (Ren. et Card.) Holz., H. cochlearifolium (Vent. in De Not.) Broth., H. norvegicum (Schimp.) Amann, H. molle (Hedw.) Loesk., H. styriacum (Limpr.) Broth., H. luridum (Hedw.) Jenn., H. alpestre (Hedw.) Loesk., H. polare (Lindb.) Loesk., H. ochraceum (Wils. ex Turn.) Loesk., H. eugyrium (Schmip.) Broth., H. subeugyrium (Ren. et Card.) Grout, H. montanum (Lindb.) Broth., and H. closteri (Aust.) Grout. Hygrohypnum alpinum and H. styriacum are new in Western North America and H. bestii, known previously as a Western North American endemic, is now shown to be on the Upper Peninsula of Michigan and around the Gulf of St. Lawrence. The taxonomic treatment presents a generic description and keys to the species and provides each species with a description, a discussion of variability and taxonomic matters, illustrations and a distribution map. The status of each excluded taxon is discussed. The generic concept and the possible relationships among the recognised species are examined by comparing the author's opinion with information derived from an ordination and two cluster analyses.
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Genre | |
Type | |
Language |
eng
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Date Available |
2010-02-11
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Provider |
Vancouver : University of British Columbia Library
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Rights |
For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use.
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DOI |
10.14288/1.0093875
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URI | |
Degree | |
Program | |
Affiliation | |
Degree Grantor |
University of British Columbia
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Campus | |
Scholarly Level |
Graduate
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Aggregated Source Repository |
DSpace
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Item Citations and Data
Rights
For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use.