Draba Linnaeus (Q3495)

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Draba is a taxon with the rank genus within the tribe Arabideae
Language Label Description Also known as
English
Draba Linnaeus
Draba is a taxon with the rank genus within the tribe Arabideae

    Statements

    taxon/id/Draba Linnaeus
    0 references
    Draba Linnaeus
    Draba
    Linnaeus
    FNA Editorial Committee. 2010. Flora of North America north of Mexico. Volume 7: Magnoliophyta: Salicaceae to Brassicaceae. Oxford University Press, New York.
    accepted
    North America
    Mexico
    South America (Andes)
    South America (Colombia to Patagonia)
    Europe
    nw Africa
    alpine and boreal
    rarely in temperate and low-elevation areas of North America and Eurasia
    glabrous or pubescent, trichomes stalked or sessile, simple, forked, cruciform, stellate, malpighiaceous, or dendritic, often more than 1 kind present.
    Stems usually erect to ascending, sometimes decumbent or prostrate, unbranched or branched (usually distally).
    petiolate or sessile;
    basal usually rosulate, usually petiolate, rarely sessile, blade margins usually entire or toothed, rarely pinnately lobed;
    cauline (when present), petiolate or sessile, blade (base cuneate [auriculate]), margins entire or dentate.
    Fruiting pedicels (proximalmost) erect or ascending to divaricate, slender.
    Flowers: sepals (rarely persistent), erect, ascending, or, rarely, spreading, ovate or oblong [elliptic], lateral pair not saccate or subsaccate basally;
    petals (erect or ascending to patent), yellow, white, pink, purple, or orange [red], obovate, spatulate, oblanceolate, or linear [orbicular, oblong], (longer than or, rarely, shorter than sepals), claw obscurely to well-differentiated from blade, (apex obtuse, rounded, notched, or, rarely, deeply 2-lobed);
    stamens slightly to strongly tetradynamous;
    filaments dilated or not basally, (glabrous);
    anthers ovate or oblong, (not apiculate);
    nectar glands (1, 2, or 4), distinct or confluent, subtending bases of stamens, median glands present or absent.
    Fruits silicles or siliques, sessile, ovate, lanceolate, elliptic, oblong, linear, suborbicular, ovoid, or subglobose, plane or spirally twisted, smooth, (not keeled, unappendaged), usually latiseptate, rarely terete;
    valves (papery), each with distinct or obscure midvein and lateral-veins, glabrous or pubescent;
    ovules 4–70 (–88) per ovary;
    style obsolete or distinct;
    Seeds biseriate, oblong, ovate, or orbicular, usually flattened (slightly flattened in D. aleutica, D. verna), usually not winged (winged in D. asterophora, D. brachycarpa, D. carnosula, D. pterosperma);
    seed-coat (minutely reticulate), not mucilaginous when wetted;