A cyto-taxonomic revision of the genus Rosa in the Pacific North-West
department or school: Science, Faculty of
department or school: Botany, Department of
data provider: DSpace
degree campus: UBCV
creator: Lewis, Walter Hepworth
issued: 2012-03-16T19:52:02Z
issued: 1953
related degree: Master of Arts - MA
degree grantor: University of British Columbia
description: The delimitation and taxonomic study of Rosa species in the Pacific North-west was approached by utilizing several experimental methods. Randomly sampled mass collections analyzed statistically and grouped into climatic regions was the most important method and it served as the basis for all conclusions. To corroborate these results, ‘ordinary' herbarium material, transplants, progeny testings, and cytological examination of chromosome and cell sizes were examined for each species. From the results, the populations were divided into four species, four subspecies, one hybrid, and one form. They have been named: Rosa acicularis Lindl., R. arkansana Porter, R. pisocarpa Gray, R. Woodsii Lindl., R. gymnocarpa Nutt. ssp. gymnocarpa, R. gymnocarpa Nutt. ssp. apiculata (Greene) Lewis ined., R. nutkana Presl. ssp. nutkana, R. nutkar ssp. Spaldingii (Crep.) Lewis ined., R. acicularis Lindl. X R. nutkana Presl, and R. nutkana Presl f. muriculata (Greene) Lewis ined.
aggregated CHO: https://circle.library.ubc.ca/rest/handle/2429/41509
note: A CYTO-TAXDNOMEC REVISION OF THE GENUS ROSA IN TEE. PACIFIC NORTH-WEST by WALTER HEFWORTH LEWIS A THESIS SUBMITTED IN PARTIAL FULFILMENT OF THE REQUIREMENTS FOR THE DEGREE OF Master of ARTS in the Department of Biology and Botany We accept this thesis as conforming to the standard required from candidates for the degree of MASTER OF .ASTg... Members of the Department of Biology and Botany THE UNIVERSITY OF BRITISH COLUMBIA August 1953 A CYTO-TAXONOMIC REVISION OF THE GENUS HOSA IN THE PACIFIC NORTH-WEST ABSTRACT The delimitation and taxonomic study of Rosa species in the Pacific North-west was approached by u t i l i z i n g several experimental methods. Randomly sampled mass collections analyzed s t a t i s t i c a l l y and grouped into climatic regions was the most important method and i t served as the basis for a l l conclusions. To coroborate these results, •ordinary' herbarium material, transplants, progeny testings, and cytological exam-ination of chromosome and c e l l sizes were examined for each species. From the results, the populations were divided into four species, four subspecies, one hybrid, and one form. They have been named: Rosa acicularis Lindl., R.. arkansana Porter, R. pisocarpa Gray, R. Woodsii Lindl., R. gymnocarpa Nutt. ssp. gymnocarpa, R. gymnocarpa Nutt. ssp. apiculata (Greene) Lewis ined., R. nutkana Presi. ssp. nutkana, R. nutkana ssp. Spaldingii (Crep.) Lewis ined., R. acicularis Lindl. X R. nutkana Presl, and R. nutkana Presi f. muriculata (Greene) Lewis ined. ACKNOMaEDGEMSNTS The author i s grateful to a l l members of the Master's Committee including Dr. K. Cole, Sr. 7. C. Brink, Dr. J. W. Neill,and particularly to the Chairman, Dr. T. M. C. Taylor for their guidance and encouragement during the study. Gratitude i s also extended to Dr. A . H. Hutchinson, Dr. 7. Krajina, Mr. R. W. Pillebury, and Mr. H. Sweet for their assistance, and to Dr. S. W. Nash, for his advice on atatisties. Special acknowledgement i s made to a l l who contr…
has type: Thesis/Dissertation
is shown at: 10.14288/1.0106966
language: eng
degree discipline: Botany
provider: Vancouver : University of British Columbia Library
publisher: University of British Columbia
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.
scholar level: Graduate
type: Text
identifier URI: http://hdl.handle.net/2429/41509