Gamochaeta Weddell (Q2677)

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Gamochaeta is a taxon with the rank genus within the tribe Gnaphalieae
Language Label Description Also known as
English
Gamochaeta Weddell
Gamochaeta is a taxon with the rank genus within the tribe Gnaphalieae

    Statements

    taxon/id/Gamochaeta Weddell
    0 references
    Gamochaeta Weddell
    Gamochaeta
    Weddell
    FNA Editorial Committee. 2006. Flora of North America north of Mexico. Volume 19: Magnoliophyta: Asteridae, part 6: Asteraceae, part 1. Oxford University Press, New York.
    accepted
    North America
    Mexico
    West Indies
    Central America
    South America
    some species adventive and naturalized in Europe
    Australia
    and elsewhere
    Stems 1+, usually erect, sometimes decumbent-ascending.
    blades mostly linear to oblanceolate or spatulate, bases cuneate to ± cordate, margins entire, sometimes sinuate, abaxial faces mostly white or gray and tomentose or pannose-tomentose, adaxial green and glabrescent or glabrous, or grayish and arachnose, loosely tomentose, or subpannose.
    Heads disciform, usually in glomerules borne in continuous or interrupted, usually spiciform, sometimes paniculiform, arrays (reduced to terminal glomerules in depauperate individuals).
    Involucres narrowly to broadly campanulate, 2.5–5 mm.
    Phyllaries in 3–7 series, unequal, mostly brownish to stramineous, sometimes purplish, hyaline, often shiny, distally chartaceous to scarious, eglandular.
    Receptacles flat (concave in fruit), glabrous, epaleate.
    Pistillate florets 50–130, more numerous than bisexual florets;
    corollas all yellow or purplish-tipped.
    Bisexual florets 2–7;
    corollas all yellow or distally purplish.
    Cypselae oblong, slightly flattened, faces with papilliform hairs (myxogenic, their lengths about equaling diams.);
    pappi readily falling, of 12–28 barbellulate bristles in 1 series (basally connate in smooth rings, falling as units).