Coreocarpus Benth.
Family: Asteraceae
Coreocarpus image

Perennials [subshrubs], 10-70(-120+) cm. Stems 1, erect [sprawling], branched throughout. Leaves cauline; opposite; obscurely petiolate; blades 1-2-pinnately or -pedately lobed (ultimate lobes narrowly lanceolate to filiform [lanceolate to ovate]), ultimate margins entire, faces usually glabrous, rarely hairy [pilose]. Heads usually radiate, sometimes discoid, in open, corymbiform to paniculiform arrays [borne singly]. Calyculi of (0-)1-3+ linear to subulate, herbaceous bractlets. Involucres ± campanulate to turbinate, 3-5+ mm diam. Phyllaries persistent, 5-8[-13+] in ± 2 series, distinct, (green to stramineous with red-brown to purplish nerves) ovate to oblong, ± equal, membranous, margins scarious. Receptacles flat to convex, paleate; paleae falling, (stramineous with red-brown striae) lance-linear to lanceolate, membranous to scarious [adnate to cypselae]. Ray florets 0, or [1-]5-8, pistillate, fertile [styliferous and sterile or neuter]; corollas [orange] yellow to pale yellow or white [purplish]. Disc florets [5-]12-25[-30+], bisexual, fertile; corollas yellow with red-brown nerves, tubes shorter than narrowly funnelform throats, lobes 5, ± deltate. Cypselae (blackish or red-brown to stramineous) obcompressed, ± oblanceolate, faces smooth or ± granular-papillate, margins ± winged, wings ± corky, ± pectinate [entire]; pappi 0, or persistent, of 1-2 retrorsely [antrorsely] barbellate awns. x = 12.

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Image of Coreocarpus arizonicus
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Image of Coreocarpus dissectus
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Image of Coreocarpus sonoranus
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