A terrestrial herb 30-55 cm tall, with clustered pubescent stems. Leaves four to five, elliptic to elliptic-lanceolate, acuminate, ciliate, 10-21 cm long, 4.6-8.5 cm wide, glabrous above and below, subtended by three sheaths. Inflorescence usually two- to three-flowered; peduncle glandular-pubescent; bracts lanceolate, acuminate, 4.5-11 cm long, 1-3 cm wide, ciliate. Flowers entirely greenish yellow, green or yellow with a glossy yellow lip marked with red on the veins within and towards the base; ovary 2.5-4 cm long, densely glandular hairy. Dorsal sepal lanceolate, acuminate, 3.2-4.5 cm long, 1-1.5 cm wide; synsepaI ovate, bifid and acuminate at the apex, 3.3-4 cm long, 1-1.5 cm wide. Petals not twisted, linear-lanceolate, acuminate, 3.7-5 cm long, 0.5-0.8 cm wide, pubescent on the mid-rib of the outer surface, villose at base on inner surface. Lip ellipsoidal, indented on main veins, 1.5-2.7 cm long, 1.4-1.7 cm in diameter, and a small orifice; side lobes obliquely oblong. Column 6-9 mm long; stigma oblong, obtuse, obscurely papillose; staminode stalked, oblong-elliptic, obtuse or slightly apiculate, 6-7 mm long, conduplicate with the lateral margins incurved somewhat, yellow or green with red marks towards the apex.
W. China (Guizhou, NW. Yunnan, Sichuan, Hubei, S. Gansu, S. Shaanxi).
In deciduous and mixed deciduous woods and on scrubby slopes and grassland; 1800-2800 m.