Coreopsis hamiltonii

Coreopsis hamiltonii, the Mt. Hamilton coreopsis, is a rare California species of tickseeds in sunflower family. 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).[2][3][4]

Coreopsis hamiltonii
Scientific classification
Kingdom:
Plantae
(unranked):
Angiosperms
(unranked):
Eudicots
(unranked):
Asterids
Order:
Asterales
Family:
Asteraceae
Genus:
Coreopsis
Species:
C. hamiltonii
Binomial name
Coreopsis hamiltonii
(Elmer) H. Sharsmith
Synonyms[1]

Leptosyne hamiltonii Elmer

Description

Coreopsis hamiltonii typically grows 10–20 centimetres (3.9–7.9 in) 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.[5][6]

It can be found blooming from March to May in California, where plants are found growing from 600–1,300 metres (2,000–4,300 ft) above sea level.[5]

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See also

References
  1. The Plant List, Coreopsis hamiltonii (Elmer) Sharsm.
  2. California Native Plant Society Rare Plants Profile
  3. Biota of North America Program 2014 county distribution map
  4. Calflora taxon report, University of California, Leptosyne hamiltonii Elmer, Mt. Hamilton coreopsis
  5. Flora of North America, Coreopsis hamiltonii
  6. Elmer, Adolph Daniel Edward 1906. Botanical Gazette 41(5): 323–324 as Leptosyne hamiltonii


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