Japan Flora: Slender stiff perennial with scattered, appressed, stiff hairs; stems 40-60 cm. long, erect, purplish, sparsely pilose, branching above or nearly simple; stipules subulate; leaflets oblong to elliptic, 7-20 mm. long, 5-10 mm. wide, rather thick and firm, glabrous on upper side, deep green, paler and sparsely pilose be- nwth; chasmogamic flowers few, 4-5 mm. long, on long peduncles; cleistogamic flowers few, axillary; calyx 2-2.5 mm. long; legumes equal, broadly ovate, about 4 mm. long, 3 mm. wide, slightly pilose. Aug.-Sept.
Honshu (Kanto Distr. and westw.), Shikoku, Kyushu. Korea and Manchuria.
var. macrovirgata (Kitag.) Kitag. Hairs at least partly spreading. Honshu (Tamba Prov.).