Plants 20-45 cm tall, with appressed to subappressed hairs 0.1-0.3 mm. Stems several, erect, 15-40 cm, angular, loosely to rather densely white hairy, sometimes glabrescent with age. Leaves 2-6 cm, subsessile; stipules 1.5-3 mm, narrowly triangular, free, sparsely appressed white hairy; rachis hairy like stem; leaflets in 6-9 pairs, linear to narrowly oblong, 3-15 × 0.5-3 mm, abaxially loosely to densely white hairy, adaxially glabrous or with scattered hairs only, apex obtuse to retuse. Racemes 3-15 cm, loosely 15-30-flowered; peduncle 3-10 cm, loosely to densely hairy like stem; bracts ca. 1 mm, white and black hairy. Calyx 2-3 mm, rather densely covered with appressed white and black hairs; teeth 0.3-0.5 mm. Petals pale lilac, sometimes pale yellow when dry; standard widely obovate, 5-7 mm, with short claw, apex retuse; wings 4-6 mm; keel 3.5-5 mm. Legumes sessile, erect, obliquely ovate as seen from side, with straight ventral side, 6-7 mm, 2.5-4 mm high, keeled ventrally, grooved dorsally, subobtuse at apex, 2-locular; valves finely cross-nerved, glabrous.
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