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|Jepson eFlora: Taxon page
Key to families | Table of families and genera
Index to accepted names and synonyms:
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|Family: Asteraceae (Compositae)||View Description||Dichotomous Key|
|Genus:||View Description||Dichotomous Key|
|Species:||View Description||Dichotomous Key|
Habit: Annual, perennial herb. Stem: erect. Leaf: simple or 1--2 × pinnately lobed or compound, basal or cauline, opposite [alternate], sessile or petioled. Inflorescence: heads radiate, 1 or in cyme-like clusters; peduncles short to long; involucre hemispheric or bell-shaped; phyllaries in 2 series, outer +- spreading, thick, green, inner thin, membranous; receptacle flat to rounded, paleate; paleae flat, scarious. Ray Flower: sterile; ray showy, yellow or proximally red-brown and distally yellow. Disk Flower: many; corolla 4--5-lobed, yellow to red-brown; style tips truncate to short triangular. Fruit: generally compressed front-to-back, often winged; pappus 0 or of 2 awns or scales.
Species In Genus: 14--21 species: eastern North America. Etymology: (Greek: bedbug-like, from fruit) Note: Coreopsis wrightii (A. Gray) E.B. Sm. not naturalized in California. Native species moved to Leptosyne.
Unabridged Note: Coreopsis, as recognized in TJM (1993), is polyphyletic. Escaped ornamental species in California all belong to a clade from central and eastern North America including the type sp. of Coreopsis, Coreopsis lanceolata. Native California species formerly in Coreopsis form a separate clade, treated here as Leptosyne. Coreopsis wrightii (A. Gray) H.M. Parker ex E.B. Sm. not naturalized in California.
eFlora Treatment Author: David J. Keil
Jepson Online Interchange
Key to CoreopsisPrevious taxon: Constancea nevinii
Next taxon: Coreopsis lanceolata
Citation for this treatment: David J. Keil 2016. Coreopsis, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=390, accessed on October 22, 2016.
Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on October 22, 2016.