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Genus :


Family :



Annual, biennial or perennial herbs, glabrous, sparsely hirsute. Stem erect or simple or branched. Leaves alternate, petiolate or sessile. Inflorescence a short raceme, ebracteate. Flowers yellow, rarely white or pink, pedicellate, regular. Sepals subequal, ovate or oblong, erect, ascending or rarely spreading. Petals obovate, spathulate or oblanceolate, clawed. Stamens 6, tetradynamous, linear, anthers ovate or oblong. Ovary cylindrical, 5 to 50-ovuled, style obsolete or distinct, stigma capitate, entire or 2-lobed. Fruit siliqua, linear or oblong, terete or angular, sessile or stipitate, few-many seeded, smooth or torulose. Seeds uniseriate or rarely biseriate, globose.

Key to the species

Serial Key Reference
1a. Stems branched 2
1b. Stems not branched B. oleracea
2a. Fruits pedicellate 3
2b. Fruits sessile 4
3a. Upper leaves amplexicaulate at base, auricled, usually entire along margin B. rapa
3b. Upper leaves not amplexicaulate at base, narrowed to the petiole, usually toothed along margin B. juncea
4a. Fruits 40-80 mm long, seed minutely reticulate B. napus
4b. Fruits 10-12 mm long, seed coarsely reticulate B. nigra