Crepis acuminata Nuttall (Q3073)

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

    Statements

    taxon/id/Crepis acuminata Nuttall
    0 references
    Crepis acuminata Nuttall
    Crepis acuminata
    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
    long-leaved hawksbeard (English)
    taper-tip hawksbeard (English)
    crépis à feuilles acuminées (French)
    Longleaf or tapertip hawksbeard (English)
    1 reference
    Sears, C.J. 2014. Crepis acuminata Nutt. (Asteraceae), an addition to the Canadian flora. Botanical Electronic News 484 http://www.ou.edu/cas/botany-micro/ben/ben484.html
    Flowering May–Aug.
    dry rocky hillsides
    ridges
    grassy flats
    open pine woods
    1000–3300 m
    Stems 1–5, erect, stout, branched near or beyond middles, tomentulose (at least proximally).
    blades elliptic to lanceolate, 8–40 × 0.5–6 (–11) cm, margins deeply pinnately lobed, lobes 5–10 pairs, usually lobed (± halfway to midveins, lobes entire), apices long-acuminate, faces ± tomentulose.
    Heads 30–70 (–100+), in compound, corymbiform arrays.
    Calyculi of 5–7, triangular, tomentulose bractlets 1–2 mm.
    Involucres cylindro-campanulate, 8–16 × 2–3 mm.
    Phyllaries 5–8, (medially green) lanceolate, 8–12 mm, (margins yellowish, often scarious), apices acute (ciliate), abaxial faces usually glabrous, sometimes sparsely tomentulose, adaxial glabrous.
    Florets 5–10 (–15);
    corollas yellow, 10–18 mm.
    Cypselae pale yellowish-brown, subcylindric, 6–9 mm, apices ± narrowed (not beaked), ribs 12;
    pappi white, 6–9 mm. 2n = 22, 33, 44, 55, 88.