Terrestrial herbs. Stems long creeping below, ascending above, to 20 cm tall, 5-6 mm in diam., bearing 4-6 leaves. Leaves broadly ovate or nearly rounded, 5-8 cm long, 3-8 cm wide, apex acute, rounded at base, polished at upper surface; petiole 2-3 cm long. Peduncle glandular hairy, to 15 cm long, with 3-4 sheaths below, sheaths hairy abaxially; rachis 5-8 cm long, 5-15-flowered; floral bracts hairy abaxially, ciliate at margins; ovary 6-8 mm long, glandular hairy. Sepals greenish white, glandular hair abaxially, ovate, 8-9 mm long, 3-veined, dorsal one erect, lateral ones spreading; petals white, obliquely ovate, 8-9 mm long, 4.5-5 mm wide, lower side enclosing claw of lip; lip white, tripartite, hypochile saccate, bearing 2 lateral wing-like keels, mesochile flat and broad, epichile divergently bilobed, lobules subquadrate; column 4-4.5 mm long, with 2 vertical ventral appendages; anther cordate, 2.5 mm long; pollinia clavate; stigma 2, located between base of rostellar arms and appendages; rostellum 4 mm long, tegula stipe ovate-oblong, 2.5 mm long, viscidium ovate, 1.5 mm long.

TAITUNG: Lanyu Is., Leou 3453, 3842; Segawa s. n. Apr 1934.

Ryukyus. Taiwan, Lanyu Is.