Japan Flora: Puberulous and loosely hirsute, simple, erect perennial 50-120 cm. high; stipules linear-lanceolate, few-nerved; leaflets 5 or 7, ovate to oblong, 8-16 cm. long, 3-6 cm. wide, abruptly acumi­nate, the terminal slightly larger; racemes 1-5, terminal, elon­gate, sometimes to 30 cm. long, the bracts deciduous, the pedicels 7—12 mm. long; filament-tubes about 7 mm. long; legumes on a stipe 8-10 mm. long, the joints 1 or 2, broadly semi-obovate, 10-12 mm. long, with short uncinate pubescence on both surfaces.   Aug.-Sept. Thickets and woods.

Hon­shu, Shikoku, Kyushu. Korea, Manchuria, and China.