Draba oligosperma Hooker (Q3524)

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Draba oligosperma is a taxon with the rank species within the genus Draba
Language Label Description Also known as
English
Draba oligosperma Hooker
Draba oligosperma is a taxon with the rank species within the genus Draba

    Statements

    taxon/id/Draba oligosperma Hooker
    0 references
    Draba oligosperma Hooker
    Draba oligosperma
    FNA Editorial Committee. 2010. Flora of North America north of Mexico. Volume 7: Magnoliophyta: Salicaceae to Brassicaceae. Oxford University Press, New York.
    accepted
    drave à fruits groupés (French)
    few-seed draba (English)
    glacier draba (English)
    few-seed whitlowgrass (English)
    1 reference
    Moss, E.H. 1983. Flora of Alberta. 2nd edition, revised by J.G. Packer. University of Toronto Press, Toronto. 687 pp.
    1 reference
    Douglas, G.W., G.B. Straley, D.V. Meidinger & J. Pojar. 1998. Illustrated Flora of British Columbia. B.C. Ministry of Environment, Lands & Parks and B.C. Ministry of Forests. Victoria. Crown Publications. 8 vols.
    1 reference
    Porsild, A.E. & W.J. Cody. 1980. Vascular Plants of the Continental Northwest Territories, Canada. National Museum of Natural Sciences, Ottawa, Ont. 667 pp.
    1 reference
    Aiken, S.G., M.J. Dallwitz, L.L. Consaul, C.L., McJannet, R.L., Boles, G.W. Argus, J.M. Gillett, P.J. Scott, R. Elven, M.C. LeBlanc, L.J. Gillespie, A.K. Brysting, H. Solstad & J.G. Harris. 2007. Flora of the Canadian Arctic Archipelago: Descriptions, Illustrations, Identification, and Information Retrieval. [CD-ROM] NRC Research Press, National Research Council of Canada, Ottawa.
    1 reference
    Cody, W.J. 2000. Flora of the Yukon Territory. 2nd ed. National Research Press, Ottawa. 669 pp.
    Flowering May–Jul.
    rock outcrops
    gravel benches
    tundra
    Stems unbranched, (0.1–) 0.2–0.6 (–1) dm, glabrous throughout or pubescent, trichomes sessile, pectinate, 0.1–0.3 mm, (their length parallel to long axis of stem).
    blade linear to linear-oblanceolate, (0.2–) 0.4–1.1 (–1.5) cm × 0.4–1.5 (–1.8) mm, margins entire, (not or, rarely, ciliate, trichomes simple, 0.2–0.4 mm), surfaces pubescent with sessile, pectinate trichomes, 0.1–0.4 mm, (their long axis parallel to prominent abaxial midvein), sometimes glabrous adaxially.
    Racemes 4–12 (–17) -flowered, ebracteate, elongated in fruit;
    Fruiting pedicels divaricate-ascending, straight, (2–) 3–10 (–13) mm, glabrous or sparsely pubescent, trichomes pectinate.
    Flowers: sepals ovate, 1.5–3 mm, glabrous or sparsely pubescent, (trichomes pectinate, 2-rayed, or simple);
    petals usually yellow, rarely creamy white, obovate, 2.5–4 × 1.5–3 mm;
    anthers ovate, 0.4–0.5 mm, (not producing pollen).
    Fruits ovoid to lanceolate, plane, inflated at least basally, sometimes slightly flattened distally, 3–6 (–7) × 2–3.5 (–4) mm;
    valves usually puberulent, rarely glabrous, trichomes simple and sessile, often unequally 2-rayed, 0.07–0.35 mm;
    ovules 6–12 per ovary;
    style 0.1–0.8 (–1.1) mm.
    Seeds ovoid, 1.1–1.5 × 0.7–1 mm. 2n = 32, 64.