Eupatorium Linnaeus (Q2596)

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Eupatorium is a taxon with the rank genus within the tribe Eupatorieae
Language Label Description Also known as
English
Eupatorium Linnaeus
Eupatorium is a taxon with the rank genus within the tribe Eupatorieae

    Statements

    taxon/id/Eupatorium Linnaeus
    0 references
    Eupatorium Linnaeus
    Eupatorium
    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
    e North America
    Europe
    e Asia
    Stems erect, usually not branched proximal to arrays of heads (from caudices or rhizomes).
    Leaves mostly cauline;
    petiolate or sessile;
    blades usually 3-nerved from or distal to bases, or pinnately nerved, mostly deltate or ovate to lanceolate or linear (and intermediate shapes, sometimes elliptic, oblong, rhombic, or suborbiculate, sometimes pinnatifid, 1–2-pinnately, ternately, or palmately lobed), ultimate margins entire or toothed, faces glabrous or puberulent, pubescent, scabrous, or setulose, usually glanddotted.
    Heads discoid, in corymbiform or diffuse to dense, paniculiform arrays.
    Involucres obconic to ellipsoid, 1–3 (–5+) mm diam.
    Phyllaries persistent, 7–15+ in 2–3 (–4+) series, (usually green) 2–3-nerved, or not notably nerved, or pinnately nerved, elliptic, lanceolate, oblong, or obovate, usually unequal, sometimes ± equal (margins scarious, hyaline, apices rounded to acute or acuminate sometimes mucronate, faces usually puberulent or villous, usually glanddotted, rarely glabrous).
    Receptacles flat or convex, epaleate.
    Florets (3–) 5 (–15+);
    corollas usually white, rarely pinkish, throats funnelform to campanulate, lobes 5, triangular;
    styles: bases sometimes enlarged, usually puberulent (glabrous in E. capillifolium), branches mostly filiform.
    Cypselae (brownish to black) prismatic, 5-ribbed, usually glabrous, usually glanddotted;
    pappi persistent, of 20–50 (whitish) barbellulate bristles in 1 series.