Perennial, procumbent, 5-30 cm long, branched mostly from the base, hoary tomentose. Leaves pinnatisect, 5-10-jugate, 10-50 mm long, 3-15 mm broad, radical shortly stalked, upper subsessile or sessile; lobes many, up to 8 mm long, 1-2 (-3) mm broad; all leaves hoary-tomentose. Racemes 10-30-flowered lax, bracteate, up to 10 cm long in fruit. Flowers c. 3 mm across, white, subsessile; pedicels up to 3 mm long in fruit. Sepals c. 2 mm long, 1 mm broad. Petals 3-4 mm long, 1-1.5 mm broad. Stamens c. 2: 2.3 mm long; anthers c. 0.2 mm. Siliculae oblong, laterally flattened, 6-10 mm long, 3-3.5 (-4)mm broad, slightly hairy or glabrous; style c. 1 mm long; septum c. 1 mm broad; seed c. 1 mm long, 0.5 mm broad.