Japan Flora: Slightly white-pubescent perennial with thick caudex; stems procum­bent, elongate, ascending above, 30-50 cm. long; leaves 15-30 cm. long, the petioles 1-2 cm. long, the stipules free, broadly lanceolate, 5-8 mm. long, the leaflets 13-19, thinly membra­nous, oblong or ovate, 2-5 cm. long, 1-2.5 cm. wide, rounded to obtuse, pale green and short appressed-pubescent beneath, glabrous above; racemes 2-3 cm. long, 8- to 15-flowered on peduncles 3-10 cm. long; flowers about 13 mm. long, the bracts linear, 1-2 mm. long; calyx-teeth linear, the lower nearly as long as the tube; standard narrowly ovate, longer than the wings and keel; legumes subsessile, curved upward and erect, puberulous, gradually attenuate at both ends, many­seeded. June-Aug.

Hokkaido, Honshu.