Perennial herb, 30-100 cm tall, erect, sparsely branched, glabrous or sub-hairy with simple hairs. Leaves pinnate with 3-10 pairs of lateral leaflets and a terminal one, 5-15 cm long, long petioled; leaflets (1-)3-8 cm long (0.5-) 1-3 cm broad, very variable in shape and size, usually lanceolate, sessile or subsessile, often sublobulate, serrate or sinuate-dentate, acute or acuminate, rarely sub-obtuse. Racemes 25-50-flowered, up to 20 cm long in fruit. Flowers 10-15 mm across, showy, often lilac or pink, sometimes white; pedicels up to 20 mm long in fruit, spreading. Sepals c. 5 mm long. Petals 10-15 mm long, 3-5 mm broad, obovate-cuneate. Stamens c. 4:5 mm long. Siliquae linear, compressed, 2.5-5 cm long, c. 2 mm broad, straight, erect, glabrous; valves with a faint mid-vein; septum not veined; seeds many, 1.5-2 mm long, oblong.

Fl. Per.: May-July.

Type: Described from Siberia (B).

Distribution: Throughout Himalayas, Tibet and C. Asia.

A very polymorphic species, especially in leaflets shape and size. E. Himalayan plants seem to have larger leaves than those in N.W. Himalayan ones, but intermediate forms are not lacking in both the areas.