Annual or biennial herbs, 20-50 cm high; The stem is simple, erect, branched at the upper part, with columnar glandular hairs. Basal leaves are oblanceolate, with a length of1-5cm, pinnately divided or big-headed, with lobes of different sizes, oval or oblong, serrated edges and short hairs on both sides; Petiole length1-1.5cm; Cauline leaves are short-stalked, oblanceolate or linear, with a length of1.5-5cm and a width of 2 2- 10/0mm, with acute tips, tapering bases and sharp serrations or entire edges. Racemes are terminal; Sepals elliptic, ca. 1 mm; Petals white, obovate, as long as or slightly longer than sepals; Stamens 2 or 4. The silique is nearly round, 2-3 mm long, 1-2 mm wide, flat, with narrow wings, slightly notched tip and extremely short style; The pedicel is 2-3 mm long. Seeds ovoid, about 1 mm long, smooth, reddish brown, with narrow wings at the edge; The daughter leaf edge leans against the radicle. The flowering period is April-May and the fruiting period is June-July.