Japan Flora: Twining or prostrate per­ennial herb; stems much elongate, glabrate; leaves long-peti- olate; stipules ovate, 4-5 mm. long, herbaceous, deciduous, the scar of stipule thickened and later becoming a gland; leaflets subcoriaceous to rigidly chartaceous, often with scattered ap­pressed hairs，nearly glabrous and yellowish green beneath, the terminal leaflets rounded to broadly obovate, 5-10 cm. long, 5-8 cm. wide; racemes 10- or more-flowered, long-ped un­cled, the nodes thickened and with a sessile gland at each flowers in 2’s or 3’s, reddish purple, 25-30 mm. long, the bracts and bracteoles ovate, subobtuse, caduc이is, 2-3 mm. long; calyx about 1 cm. long, the teeth semirounded, the upper 2 larger, slightly connate; legumes puberulous at first, soon glabrous, oblong, rather flat, 5-6 cm. long, about 2.5 cm. wide, with 2 ridges along the outer suture.  July-Sept. Sandy beaches near seashores.

Honshu (Tokaido Distr. and westw.)，Shi­koku, Kyushu; rather common. Ryukyus, Formosa, and China.