Crepis occidentalis Nuttall (Q3084)

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Crepis occidentalis is a taxon with the rank species within the genus Crepis
Language Label Description Also known as
English
Crepis occidentalis Nuttall
Crepis occidentalis is a taxon with the rank species within the genus Crepis

    Statements

    taxon/id/Crepis occidentalis Nuttall
    0 references
    Crepis occidentalis Nuttall
    Crepis occidentalis
    Nuttall
    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
    western hawksbeard (English)
    large-flowered hawksbeard (English)
    grey hawksbeard (English)
    crépis de l'Ouest (French)
    Gray or western hawksbeard (English)
    taproots deep, caudices swollen, (often covered with old leaf-bases).
    Stems 1–3, erect, stout, branched from bases or beyond, hispid, tomentose, or tomentulose, sometimes stipitate-glandular distally.
    blades elliptic, runcinate, (5–) 8–20 × 2–5 cm, margins pinnately-lobed to sinuously dentate (lobes broadly lanceolate, often dentate), apices acute or acuminate, faces gray-tomentose, sometimes stipitate-glandular.
    Heads 2–30, in loose corymbiform arrays.
    Calyculi of 6–8, lanceolate or linear, glabrate to tomentose bractlets 2–6 mm.
    Involucres cylindric, 11–19 × 5–10 mm.
    Phyllaries 7–13, lanceolate, 12–15 mm, (bases thickened, keeled, margins green, often scarious) apices acute or acuminate, abaxial faces gray-tomentose, sometimes setose (setae black or greenish) or stipitate-glandular, adaxial glabrous or with fine hairs.
    corollas yellow, 18–22 mm.
    Cypselae golden or dark-brown, subcylindric, 6–10 mm, apices tapered (not beaked), ribs 10–18, strong and rounded;
    2n = 22, 33, 44, 55, 66, 77, 88.