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Draba crassifolia, D. albertina, D. nemorosa, and D. stenoloba in Canada and Alaska
Canadian Journal of Botany, 1975The cytotaxonomy of four species of Draba that are invariably confused with one another is discussed and a key is given. The species are D. crassifolia Graham (n = 20); D. albertina Greene (n = 12); D. nemorosa L. (n = 8); and D. stenoloba Ledebour (n = 20). Characteristics of sterile artificial first-generation hybrids between D.
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