Onopordum Linnaeus (Q3034)

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

    Statements

    taxon/id/Onopordum Linnaeus
    0 references
    Onopordum Linnaeus
    Onopordum
    Linnaeus
    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
    Cotton thistle (English)
    onoporde (English)
    Stems usually erect, ± branched, spiny-winged.
    winged-petiolate (basal) or sessile (cauline);
    blade bases narrowing, margins pinnately lobed or divided and dentate, teeth and lobes tipped with stout spines.
    Heads discoid, borne singly or in corymbiform arrays;
    (peduncles 0 or spiny winged).
    Involucres hemispheric to ovoid or spheric.
    Phyllaries many in 8–10+ series, linear to ovate, entire, tapered to stiff spines, middle and outer often spreading or reflexed.
    Receptacles flat to convex, epaleate, not bristly, alveolate with apically fringed pits.
    corollas white or purple, actinomorphic or weakly zygmorphic, tubes slender, throats cylindric or narrowly goblet-shaped, lobes linear;
    anther bases acute-tailed, apical appendages subulate;
    style-branches: fused portions with minutely hairy nodes, long, cylindric, minutely papillate, distinct portions minute.
    Cypselae ± cylindric, 4–5-angled, usually ± transversely roughened, glabrous, attachment scars basal;
    pappi falling in ring, of many barbed or plumose bristles, basally connate.