Japan Flora: Trailing perennial; stems slender, sparsely appressed retrorse-pilose while young, soon glabrous; stipules narrowly ovate, 2-4 mm. long, rather acute, basifixed, obscurely few-nerved; leaflets sparsely pilose only while young, ovate or nearly obovate, 3-5 cm. long, 2.5-3.5 cm. broad, the stipels narrowly ovate, acute, about 1 mm. long; racemes 1-2 cm. long, few-flowered, peduncled, the bracteoles minute, ovate, acute, about 0.8 mm. long; calyx 2.5-3 mm. long, nearly glabrous, the teeth depressed-triangular, minutely ciliolate; legumes broadly linear, spreading, 3-5 cm. long, nearly or quite glabrous, 5- or 6-seeded, slightly inflated over the seeds.  Apr.-Nov. Gravelly slopes near seashores.

Kyushu (Yakushima); rare.  Ryukyus, Formosa, China, and tropi­cal regions.