Leptosyne hamiltonii, the Mt. Hamilton coreopsis or Mt. Hamilton tickseed, is a rare California species of Leptosyne in the family Asteraceae. It is found only in a small region including Mount Hamilton and the Diablo Range in the southwestern San Francisco Bay Area (Alameda, Santa Clara, and Stanislaus Counties).California Native Plant Society Rare Plants ProfileBiota of North America Program 2014 county distribution mapCalflora taxon report, University of California, Leptosyne hamiltonii Elmer, Mt. Hamilton coreopsis
Description Leptosyne hamiltonii typically grows tall or sometimes taller when in bloom. The foliage is low growing, producing bright golden yellow colored flower heads and red purplish tinted peduncles. The foliage is deeply cut with a thin ferny shape.Elmer, Adolph Daniel Edward 1906. Botanical Gazette 41(5): 323–324 as Leptosyne hamiltonii
It can be found blooming from March to May in California, where plants are found growing from above sea level.Flora of North America, Coreopsis hamiltonii
References
External links Jepson eFlora treatment: Leptosyne hamiltonii United States Department of California Plants Profile Coreopsis hamiltonii — University of California Calphotos Photo gallery