Japan Flora: Short-pubescent or nearly glabrous annual or biennial; stems erect, 50-90 cm. long, branched above; leaflets narrowly elliptic to broadly lanceolate, 1.5-3 cm. long, obtuse at apex, cuneate at base, toothed, glabrous; racemes axillary, 3-5 cm. long, rather densely flowered, elongate after anthesis, the peduncles 2-4 cm. long, the bracts linear-subulate, about 1 mm. long, slightly longer than the pedicels; flowers pale yellow, 3-4mm. long; calyx thinly puberulent, 1.5 mm. long, teeth subu­late; standard slightly longer than the wings and keel; legumes elliptic, about 3 mm. long, nearly smooth.  Waste ground and fields in lowlands.

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