Draba spp.
Family: Brassicaceae
Draba image
Max Licher  
Annuals, biennials, or perennials [subshrubs]; (caudex simple or branched); scapose or not; 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). Leaves usually basal and cauline, sometimes cauline absent; 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. Racemes (often corymbose, sometimes bracteate), elongated or not in fruit. 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; replum rounded; septum complete; ovules 4-70(-88) per ovary; style obsolete or distinct; stigma capitate. 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; cotyledons accumbent. x = 6-12.
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Image of Draba allenii
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Image of Draba apiculata
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Draba dot map
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Image of Draba bellii
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Image of Draba carnosula
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Image of Draba crockeri
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Image of Draba cruciata
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Image of Draba glacialis
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Image of Draba hirta
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Image of Draba incana
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Image of Draba inexpectata
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Image of Draba laevicapsula
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Image of Draba laurentiana
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Draba dot map
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Image of Draba mccallae
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Image of Draba nelsonii
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Image of Draba nitida
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Image of Draba norvegica
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Image of Draba ogilviensis
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Image of Draba oxyloba
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Image of Draba pallida
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Image of Draba patens
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Image of Draba pattersonii
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Image of Draba pinetorum
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Image of Draba pycnosperma
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Image of Draba rigida
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Image of Draba serpentina
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Image of Draba sphaerula
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Image of Draba subsessilis
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Image of Draba trichocarpa
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Image of Draba valida
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Image of Draba yellowstonensis
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Draba dot map

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