Studies in the genus DODECATHEON of North-western America, with some reference to its use in floriculture ...
A study of the genus Dodecatheon has been made with two purposes in view: 1. A reclassification, of the genus in northwestern America, including Alaska, Yukon, British Columbia, Alberta, Saskatchewan, Washington, Oregon, Idaho and Montana. 2. An incidental survey of its horticultural possibilities....
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| Format: | Text |
| Language: | English |
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University of British Columbia
2012
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| Online Access: | https://dx.doi.org/10.14288/1.0106515 https://doi.library.ubc.ca/10.14288/1.0106515 |
| Summary: | A study of the genus Dodecatheon has been made with two purposes in view: 1. A reclassification, of the genus in northwestern America, including Alaska, Yukon, British Columbia, Alberta, Saskatchewan, Washington, Oregon, Idaho and Montana. 2. An incidental survey of its horticultural possibilities. The method of approach has included collection of living material, hybridization, cytological study, and examination of seven to eight hundred herbarium specimens. Throughout the progress of this work, a number of horticulturally valuable characteristics have been observed and noted. Chromosome counts have been obtained for a number of species and from a number of localities. These counts indicate an interesting pattern of polyploidy within the genus: diploids on the east of the Cascade Mountains, polyploids extending north to Alaska along the Pacific Coast. Similarity of diploids and polyploids suggest autoploidy. As a result of the work outlined above, the genus has been reclassified into ten species and one ... |
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