Citation: L., Sp. Pl. 666 (1753).

Synonymy: Not Applicable

Common name: None

Description:
Annual, biennial or perennial herbs, glaucous, glabrous or with simple hairs.

Sepals erect or slightly spreading, dimorphic; petals clawed, yellow; stamens 6; median glands present.

Siliqua dehiscent, mid-vein prominent, beak present with or without seeds; seeds in 1 row, mucous; radicle incumbent.

Distribution:  Native to Europe and Asia but has numerous cosmopolitan cultivated and weed species. 9 species are naturalised in Australia. Among important cultivated species are B. oleracea L. (cabbage, cauliflower), B. campestris L. (turnip) and B. napus L. (rape).

Biology: No text

Key to Species:

1. Upper stem leaves petiolate or narrowed to the base
2. Ovary on a gynophore	B. elongata 1.
2. Ovary sessile
3. Fruit appressed; beak less than 4 mm long	B. nigra 4.
3. Fruit not appressed; beak more than 4 mm long
4. Basal leaves lyrate-pinnatifid, sparsely hispid; beak 4-10 mm long, narrower than the stigma	B. juncea 2.
4. Basal leaves runcinate-pinnatifid, densely hispid; beak 8-20 mm long, as wide as the stigma	B. tournefortii 7.
1. Upper stem leaves rounded or deeply cordate to stem-clasping at the base
5. All leaves glabrous, stem leaves less than one-third stem-clasping B. oleracea 5
5. Basal leaves bristly, stem leaves more than one half stem-clasping
6. All leaves glaucous; inflorescence a convex corymb; petals pale- yellow	B. napus 3.
6. Lower leaves grass-green; inflorescence a concave corymb; petals bright-yellow	B. rapa 6.

Author: Not yet available