Japan Flora: Roots firm, elongate; plant glabrous, scandent, to 20 nx long; stems rather slender, firm, much- branched, lustrous, flexuous, reddish brown, with slightly thickened nodes, glabrous; racemes densely flowered; flowers about 12 mm. long, glabrous; perianth-segments linear-oblong; sepals obtuse, 5-nerved, petals narrower than the sepals, 3-nerved, rounded at apex; lip navicular, erose and undulate on upper margins, with a broad fleshy puberulent disc reaching to the middle and a bilobed woolly mass above it; column rather long; capsules linear, acuminate.

Kyushu (Tanegashima); very rare. Ryukyus, Formosa, India, and Malaysia.