Project 3346: C. Björk. 2019. OVERLOOKED DIVERSITY IN EXOTIC TARAXACUM IN BRITISH COLUMBIA, CANADA. Botany. 97 (6):329-346.
Abstract
In almost all North American literature, including in British Columbia, weedy Taraxacum species have been named as T. officinale and T. erythrospermum (or T. laevigatum). This coarse taxonomic approach ignores great diversity in morphology, ecology and geographical distributions among the exotic established species. Taxonomic refinement would facilitate floristics and ecological studies when exotic Taraxacum species are involved, and the taxonomy of native Taraxacum must first determine which are and which are not native species, which in turn requires knowledge of sectional identity of any specimen. Exotic Taraxacum specimens were identified to species and taxonomic sections using refined species and sectional concepts that align with taxonomic standards used in the native ranges of the species in Europe. Seven exotic sections and one informally named group are found to be present in British Columbia (Borea, Boreigena, Celtica, Erythrosperma, Hamata, Naevosa, Taraxacum, and the T. fulvicarpum group). The number of exotic Taraxacum species known to occur in British Columbia to date exceeds 100. A key to the exotic sections of British Columbia Taraxacum is presented and the sections are characterized. Species known to date are listed by their sectional placement. Notes are also presented on distinguishing native from exotic Taraxacum in British Columbia.Read the article »
Article DOI: 10.1139/cjb-2018-0094
Project DOI: 10.7934/P3346, http://dx.doi.org/10.7934/P3346
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- University of British Columbia
- Beaty Biodiversity Museum
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