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RACIAL DIVERSITY IN CALIFORNIAN PRUNELLA VULGARIS
Author(s) -
NELSON ANDREW P.
Publication year - 1967
Publication title -
new phytologist
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.742
H-Index - 244
eISSN - 1469-8137
pISSN - 0028-646X
DOI - 10.1111/j.1469-8137.1967.tb05441.x
Subject(s) - prunella vulgaris , montane ecology , race (biology) , phytosociology , ecology , variation (astronomy) , geography , elevation (ballistics) , biology , demography , botany , plant community , sociology , mathematics , medicine , alternative medicine , physics , geometry , pathology , traditional chinese medicine , astrophysics , ecological succession
S ummary Two sequential common garden studies of Californian Prunella ‐culgmis subsp. lanceolata have revealed the existence of a first‐year flowering low‐elevation race adapted to mild winters and a second‐year flowering montane race adapted to severe winters. Characteristics of habit and growth rate provide for the recognition of coastal and inland forms within the low‐elevation race and Cascade and Sierran forms within the montane race. The distribution of these four racial forms in California can be correlated with climatological features. Clinal variation correlated with latitude and elevation can be demonstrated within each form. A sequence by which the four forms might have evolved is postulated. Comparison of the results obtained with published accounts of variation in European P. vulgaris and other Californian species suggests that modes of infraspecific variation in California and Europe may be more comparable than previous studies would indicate.