Draba borealis de Candolle (Q3503)

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Draba borealis is a taxon with the rank species within the genus Draba
Language Label Description Also known as
English
Draba borealis de Candolle
Draba borealis is a taxon with the rank species within the genus Draba

    Statements

    taxon/id/Draba borealis de Candolle
    0 references
    Draba borealis de Candolle
    Draba borealis
    de Candolle
    FNA Editorial Committee. 2010. Flora of North America north of Mexico. Volume 7: Magnoliophyta: Salicaceae to Brassicaceae. Oxford University Press, New York.
    accepted
    drave boréale (French)
    boreal draba (English)
    northern draba (English)
    boreal whitlowgrass (English)
    northern whitlowgrass (English)
    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
    Moss, E.H. 1983. Flora of Alberta. 2nd edition, revised by J.G. Packer. University of Toronto Press, Toronto. 687 pp.
    1 reference
    Cody, W.J. 2000. Flora of the Yukon Territory. 2nd ed. National Research Press, Ottawa. 669 pp.
    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.
    e Asia (Japan)
    e Asia (Russian Far East)
    Flowering Jun–Jul.
    rock outcrops
    gravelly terraces
    meadows
    forest edges
    thickets
    roadsides
    grassy areas
    alpine tundra
    Stems usually unbranched, rarely branched, (0.4–) 1–3.6 (–5.5) dm, often hirsute proximally, trichomes usually simple and 2-rayed, 0.5–1.1 mm, with short-stalked, 3–8-rayed ones, 0.1–0.4 mm (rarely simple trichomes absent distally).
    Basal leaves rosulate;
    blade ovate or obovate to oblanceolate, (0.5–) 1–4.2 (–6) cm × 3–10 (–25) mm, margins dentate or denticulate, surfaces pubescent, trichomes short-stalked, cruciform, or (2–) 4–6-rayed, 0.2–0.6 mm (principal rays usually simple, rarely 1 or 2 with a lateral branch, sometimes appearing to 10-rayed).
    blade ovate, margins entire or dentate, surfaces pubescent as basal or adaxially with some simple trichomes.
    Racemes (6–) 8–20 (–35) -flowered, ebracteate, elongated in fruit;
    Fruiting pedicels divaricate or ascending, straight, (2–) 4–8 (–13) mm, pubescent as stem.
    Flowers: sepals ovate, 2–3 mm, pubescent, (trichomes simple);
    petals white, obovate, 4–6 × 2–3 mm;
    anthers ovate, 0.3–0.5 mm.
    Fruits ovate to broadly oblong or lanceolate, slightly twisted or plane, flattened, (5–) 7–12 × 2.5–4.5 mm;
    valves pubescent, trichomes simple and short-stalked, 2–4-rayed, 0.1–0.4 mm;
    ovules 16–28 (–30) per ovary;
    style 0.2–0.6 (–0.8) mm, glabrous.
    Seeds oblong, 1–1.5 × 0.7–1 mm. 2n = 64, 80.