Draba Linnaeus (Q3495)
Draba is a taxon with the rank genus within the tribe Arabideae
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Draba Linnaeus
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Draba is a taxon with the rank genus within the tribe Arabideae
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Statements
taxon/id/Draba Linnaeus
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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
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rarely in temperate and low-elevation areas of North America and Eurasia
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glabrous or pubescent, trichomes stalked or sessile, simple, forked, cruciform, stellate, malpighiaceous, or dendritic, often more than 1 kind present.
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Stems usually erect to ascending, sometimes decumbent or prostrate, unbranched or branched (usually distally).
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petiolate or sessile;
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basal usually rosulate, usually petiolate, rarely sessile, blade margins usually entire or toothed, rarely pinnately lobed;
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cauline (when present), petiolate or sessile, blade (base cuneate [auriculate]), margins entire or dentate.
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Fruiting pedicels (proximalmost) erect or ascending to divaricate, slender.
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Flowers: sepals (rarely persistent), erect, ascending, or, rarely, spreading, ovate or oblong [elliptic], lateral pair not saccate or subsaccate basally;
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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);
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stamens slightly to strongly tetradynamous;
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filaments dilated or not basally, (glabrous);
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anthers ovate or oblong, (not apiculate);
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nectar glands (1, 2, or 4), distinct or confluent, subtending bases of stamens, median glands present or absent.
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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;
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valves (papery), each with distinct or obscure midvein and lateral-veins, glabrous or pubescent;
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ovules 4–70 (–88) per ovary;
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style obsolete or distinct;
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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);
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seed-coat (minutely reticulate), not mucilaginous when wetted;
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tetradynamous
slightly to strongly
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