Japan Flora: Stems erect from a short-creeping base, stout, fleshy, 40-80 cm. long, rather densely leafy on the lower half; leaves broadly lanceo-late to oblong, 8-15 cm. long, 2-6 cm. wide，acuminate, acute to nearly rounded at base, 5- to 7-nerved, the upper leaves few, reduced, the petioles 3-7 cm. long, broadened into a short sheath at base; spikes densely many-flowered, 7-25 cm. long, slightly pubescent; sepals 3-4 mm. long, ovate, obtuse; lip broadly ovate, rounded at apex, about 2 mm. long, pilose, the inner side with 2 callose protuberances; column nearly as long as the lip; ovary glabrous.

Kyushu (Yakushima). Ryukyus, Formosa, China, India, and Malaysia.