Japan Flora: Twin­ing grayish green perennial; stems rather slender, densely re­curved short-pubescent; leaves petioled, the stipules narrowly ovate, acuminate, 4-5 mm. long, brown, several-nerved, the leaflets herbaceous, with sessile, yellowish brown, discoid glands on under side, dull yellow-villous, the terminal leaflet obovate or broadly so, 3-5 cm. long, 2.5-4 cm. wide, the stipels filiform, 2-3 mm. long; racemes nearly sessile, 10- to 20-floxv- ered, 2-4 cm. long, the bracts elliptic, mucronate, caducous, brownish, 4-6 mm. long; flowers yellow, 8-10 mm. across; calyx densely puberulent, glandular, 6-8 mm. long, the lower 3 lobes lanceolate, acuminate; legumes elliptic, flat, slightly inflated above the seeds, slightly constricted between the seeds, 12-13 mm. long, about 8 mm. wide, puberulent, rarely gla­brous except the margin, reddish when mature. July-Sept. Thickets in hills and lowlands.

Honshu (Kanto Distr. and westw.), Shikoku, Kyushu; rather  common. Korea, China, Ryukyu, Formosa, and Philippines.