A terrestrial herb 12-38 cm tall, with stems often in clusters and with a short rhizome. Sterns erect, covered below by about three glabrous, tubular, obtuse sheaths and by leaf sheaths above. Leaves three to four (to five), suberect, often conduplicate, lanceolate or elliptic-lanceolate, acute or acuminate, 6-19 cm long, 1.5-4 cm wide, bright green, glandular-pubescent on the veins ab0l"e and below, glandular-ciliate. Inflorescence one- or rarely twoflowered; peduncle slender, glandular-pubescent; bract erect, always overtopping the flower, foliaceous, erect, conduplicate, elliptic- lanceolate, acute, 3-10 cm long, densely glandular-pubescent, glandular-eiliate. Flower small, slightly fragrant, with greenish or greenish yellow sepals and petals often flushed, streaked, or spotted with purple-brown, a waxy white lip purple-spotted on the edge of the mouth and purple-streaked within, and a yellow staminode spotted with purple-red; pedicel and ovary 1.5-2.8 cm long, densely glandular-pubescent. Dorsal sepal lanceolate, acuminate, 2-3 cm long, 0.9-1.2 cm wide, undulate and somewhat twisted, glandular on outer surface; synsepallanceolate or elliptic-lanceolate, bifid at acute apex, 2-3 cm long, 0.8-0.9 cm wide, glandular on main veins. Petals spreading-deflexed at 45° to horizontal, linear-tapering, acuminate, spirally twisted, 2.5-4.5 cm long, 0.3-0.4 cm wide, pubescent at base on inner surface. Lip obovoid, 1.8-2.5 cm long, 1-1.5 cm across, silky pubescent within. Column short, 0.8-0.9 cm long; staminode slenderly stalked, concave in apical half, obovate, obtuse, 0.7-1 cm long, 0.35-0.45 cm wide.