Perennial herb to 40 cm high, erect to spreading; stems usually scabrous, the hairs often bilobed or deflexed. Basal leaves pinnate, the lobes dentate, terminal lobe the largest; hairs sometimes larger and coarser than on stems. Cauline leaves distant, spathulate to narrowly cuneate, serrate near apex; base variable from attenuate to auriculate; marginal hairs arising above a warty projection and often bilobed. Inflorescence a raceme. Sepals 0.5–0.75 mm long. Petals very reduced, linear. Stamens 2, median. Stigma subsessile to sessile. Silicula dehiscent, elliptic to ovate, 2.5–3 mm long, 1.75–3 mm wide, usually glabrous; wing slight in upper half, forming a small apical notch; pedicels 2.5–3 mm long, puberulous, spreading. Seeds c. 1.5 mm long; radicle incumbent.