Brassicaceae: Mustard Family — Mustards
Members of the mustard family all have four petals, usually in a cross shape (hence Cruciferae; the old name for the family). With the plants on this page, the flowers are quite similar. However, the leaves are different, as are the fruits. Some of the fruits are cylindric, others tapered towards the tip. Some are appressed to the stem, others are spreading and either ascending (upwards-curving) or reflexed (down-curving). All of the fruits are dehiscent, meaning they split longitudinally down a seam. The fruits of Brassica and Hirschfeldia are segmented, with a clearly defined terminal segment. Sisymbrium fruits are not segmented.