Japan Flora: Prostrate to trailing, sparsely branched perennial; branches elongate, slender, loosely leaved, 60-100 cm. long, with spreading whitish pubescence; stipules lanceolate, recurved, acuminate; leaflets membranous, broadly obovate, 1-2 cm. long, 8-15 mm. wide, retuse to rounded, green, pubescent beneath, sparsely pubescent to glabrate on upper side; racemes very short, sessile; chasmo­gamic flowers yellowish to white, few, 7-8 mm. long; calyx­lobes nearly linear with a slightly broadened base; cleistogamic flowers 1-3 in upper leaf-axils; calyx about 1.5 mm. long; legumes broadly ovate, 3-4 mm. long, with long ascending pubescence. July-Sept. Thickets and grassy places in low­ lands and hills;

Honshu, Shikoku, Kyushu; rather common. Korea and China.