Draba aleutica Ekman (Q3554)

From Canadian Flora Commons
Jump to navigation Jump to search
Draba aleutica is a taxon with the rank species within the genus Draba
Language Label Description Also known as
English
Draba aleutica Ekman
Draba aleutica is a taxon with the rank species within the genus Draba

    Statements

    taxon/id/Draba aleutica Ekman
    0 references
    Draba aleutica Ekman
    Draba aleutica
    FNA Editorial Committee. 2010. Flora of North America north of Mexico. Volume 7: Magnoliophyta: Salicaceae to Brassicaceae. Oxford University Press, New York.
    accepted
    Aleutian whitlowgrass (English)
    Aleutian draba (English)
    drave des Aléoutiennes (French)
    1 reference
    Vascular Plant Herbarium (DAO), Agriculture and Agri-Food Canada, Ottawa, ON. http://res2.agr.ca/ecorc/dao/index_e.htm
    e Asia (Russian Far East)
    Flowering May–Jul.
    gravelly soil
    snow banks
    Stems unbranched, 0.04–0.4 dm, usually pubescent throughout, sometimes glabrous basally, trichomes simple, 0.1–1 mm, with 2-rayed ones.
    petiole base and margin ciliate, (trichomes simple, to 1.4 mm);
    blade oblanceolate to spatulate or obovate, 0.4–0.8 (–1) cm × 2–3.5 (–4.5) mm, margins entire, surfaces usually sparsely to densely pilose with simple trichomes, to 1.4 mm, with much fewer, stalked, 2-rayed ones, (sometimes surfaces glabrous, or adaxially only, midvein obscure abaxially).
    Cauline leaves 0.
    Racemes (1 or) 2–5 (–9) -flowered, ebracteate, not or slightly elongated in fruit;
    Fruiting pedicels divaricate, straight, 1.5–4 (–6) mm, pubescent, trichomes simple with fewer, 2-rayed, stalked ones.
    Flowers: sepals oblong, 2–3 mm, glabrous or sparsely pubescent, (trichomes simple);
    petals yellowish green to pale-yellow, linear-oblanceolate, 3–4 × 0.5–0.8 mm;
    anthers oblong, 0.4–0.5 mm.
    Fruits broadly obovoid to subglobose, plane, slightly flattened, 3–5 × 3–4.5 mm;
    valves glabrous or pubescent, trichomes simple, 0.1–0.3 mm;
    ovules 4–8 per ovary;
    style 0.1–0.4 mm.
    Seeds oblong, (slightly flattened), 1.4–1.8 × 0.9–1.1 mm.