Annual or biennial herbs up to 1 m tall, branched. Stems softly puberulous, densely in the lower part, thinly in the upper part. Basal leaves rosulate, petiolate, pinnatisect, 4-5-jugate, the lateral lobes opposite or alternate, ± triangular or semi-ovate-triangu­lar, subentire or remotely denticulate; terminal lobe triangular-ovate, obscurely 3-lobate, obtuse, remotely denticulate. Stem leaves 1-3-jugate with both the terminal and the lateral lobes becoming narrower and longer, the terminal lobe hastate; upper stem leaves hastately 3-lobed, the two lateral lobes getting progressively smaller; uppermost leaves lanceolate, entire; all leaves softly puberulous, ciliolate. Racemes terminal, at first dense, corymbose; in fruit elongate, lax. Sepals 3-5-5 mm long, thinly puberulous. Petals 7-8 mm long, broadly oblanceolate, with a long narrow claw, yellow. Siliquae 5-8-5 cm long, 1-2-1-5 mm in diameter, linear, terete; valves 3-nerved, puberulous in the lower part only; style 1-3 mm long, clavate-cylindrical. Seeds c. 1 x 0-7 mm, ovoid, brown.