Coreopsis Linnaeus (Q2571)

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Coreopsis is a taxon with the rank genus within the tribe Coreopsideae
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Coreopsis Linnaeus
Coreopsis is a taxon with the rank genus within the tribe Coreopsideae

    Statements

    taxon/id/Coreopsis Linnaeus
    0 references
    Coreopsis Linnaeus
    Coreopsis
    Linnaeus
    FNA Editorial Committee. 2006. Flora of North America north of Mexico. Volume 21: Magnoliophyta: Asteridae, part 8: Asteraceae, part 3. Oxford University Press, New York.
    accepted
    Mostly temperate North America
    also tropical New World and Old World. Early leaves of some coreopsises often differ from later leaves on individual plants
    Annuals, perennials, subshrubs, or shrubs, 10–80 (–200+) cm (often rhizomatous or with cormiform bases, stoloniferous in C. auriculata).
    Stems usually 1, erect, branched distally or ± throughout.
    petiolate or sessile;
    blades simple and entire (dentate in C. latifolia), or ± pinnately or pedately lobed, faces glabrous or hairy.
    Heads radiate, borne singly or in open, ± corymbiform arrays.
    Calyculi of (3–) 8+, distinct, ± herbaceous bractlets.
    Involucres ± globose to cylindric, 4–25+ mm diam.
    Phyllaries usually ± 8 in ± 2 series (usually distinct, rarely connate ± 1/10 their lengths, mostly oblong to linear, ± membranous, margins ± scarious).
    Receptacles flat to convex, paleate;
    paleae falling, ovate to linear or subulate, ± flat, ± scarious (not adnate to and not falling with cypselae except in C. bigelovii).
    Ray-florets mostly (5–) 8 (–12+, more in “double” cultivars), neuter, or styliferous and sterile, or pistillate and fertile;
    corollas usually yellow, sometimes redbrown to purple proximally, sometimes wholly purple or pink to white.
    Disc-florets 8–150+, bisexual, fertile;
    corollas usually yellow, sometimes redbrown to purple at tips or throughout, tubes equaling or shorter than narrowly funnelform throats, lobes 4 or 5 (adaxial sinus seldom deeper than others).
    Cypselae obcompressed, ± orbiculate to ovate, oblong, or linear, usually thin-margined or winged, wings membranous to chartaceous or corky, entire or lobed to toothed, sometimes ciliolate;
    faces smooth or ± papillate to tuberculate;