Brassica spp.
Family: Brassicaceae
Brassica image
John Hilty  
Annuals, biennials, or, rarely, perennials; not scapose; glabrous, glabrescent, or pubescent. Stems erect, unbranched or branched distally. Leaves basal and cauline; petiolate or sessile; basal (persistent in B. tournefortii), rosulate or not, petiolate, blade margins entire, dentate, or lyrate-pinnatifid; cauline petiolate or sessile, blade (base sometimes auriculate or amplexicaul), margins entire, dentate, lobed, or sinuate-serrate. Racemes (corymbose), considerably elongated in fruit. Fruiting pedicels erect, spreading, ascending or divaricately-ascending, often slender. Flowers: sepals usually erect or ascending, rarely spreading, oblong [ovate], lateral pair usually saccate basally; petals yellow to orange-yellow [rarely white], obovate, ovate, elliptic, or oblanceolate, claw often differentiated from blade, (sometimes attenuate basally, apex rounded or emarginate); stamens tetradynamous; filaments slender; anthers oblong or ovate, (apex obtuse); nectar glands confluent or not, median glands present. Fruits siliques, dehiscent, sessile or stipitate, segments 2, linear, torulose or smooth, terete, 4-angled, or latiseptate; (terminal segment seedless or 1-3-seeded, usually filiform or conic, rarely cylindrical); valves each prominently 1-veined, glabrous; replum rounded; septum complete; ovules [4-]10-50 per ovary; stigma entire or 2-lobed. Seeds uniseriate, plump, not winged, globose; seed coat (reticulate or reticulate-alveolate), mucilaginous or not when wetted; cotyledons conduplicate. x = 7, 8, 9, 10, 11.
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Image of Brassica caulorapa
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Image of Brassica erucastrum
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Brassica dot map
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Image of Brassica pekinensis
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