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Key to families | Table of families and genera

Specimen numbers are hyperlinked to records in the Consortium of California Herbaria data view where possible. Taxa are hyperlinked to entries in the Jepson Interchange via the "[Online Interchange]" link.

 

COREOPSIS
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.
14–21 species: eastern North America. (Greek: bedbug-like, from fruit) [Kimball & Crawford 2004 Molec Phylogen Evol 33:127–139; Strother 2006 FNANM 21:185–198] 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.

Key to Coreopsis

1. Perennial herb; ray yellow throughout; stem nodes generally 2–5 ..... C. lanceolata

1' Annual; ray yellow or proximally red-brown; stem nodes generally > 5 ..... C. tinctoria

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Citation for the whole project: Jepson Flora Project (eds.) [year] Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html [accessed on month, day, year]
Citation for an individual treatment: [Author of taxon treatment] [year]. [Taxon name] in Jepson Flora Project (eds.) Jepson eFlora, [URL for treatment]. Accessed on [month, day, year].
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