Japan Flora: Twining annual; stems slender, elongate with retrorsely appressed to ascending brownish hispid hairs; leaves pedoled, the stipules broadly lanceolate, slightly nerved, 2-3 mm. long, the leaflets 3, rarely digitately 5-7, entire, narrowly ovate to linear, 3-8 cm. long, 8-25 mm. wide, slightly paler beneath, loosely appressed-pilose, the stipels lanceolate, acuminate, 1.5-2 mm. long, 3-nerved; racemes axillary, few-flowered, sometimes very short; flowers pale purple, 5-8 mm. long; calyx-tee th nearly as long as die tube; legumes flat, linear-oblong, 2-2.5 cm. long, 4-5 mm. wide, densely pale brown pilose, 2- or 3-seeded. Aug.-Sept. Thickets in lowlands.

Honshu, Shikoku, Kyushu; com­mon. Korea, China, Manchuria, e. Siberia, and Formosa.