A terrestrial herb. Leaves 6-7, narrowly elliptic, obtuse and minutely tricuspidate at apex, 14-22 cm long, 2.5-4.2 cm wide, pale green, faintly lined and mottled dark green, margins erose towards apex. Inflorescence one-flowered; peduncle 10-23 cm long, pale green, purple-pubescent on outside; petals white, veined with green, purple-flushed on apical margins; lip and staminode green with darker veins; pedicel and ovary 4 cm long, green, purple-pubescent. Dorsal sepal ovate, acuminate or acute, 3.2-3.8 cm long, 3.2-4 cm wide; synsepalum concave, ovate, acute, 2.5-2.7 cm long, 1.7 cm wide. Petals falcate, narrowly elliptic, obtuse, 4.5-5 cm long, 1.5-2 cm wide, ciliolate. Lip narrowing towards apex, 4-5 cm long, 1.8-2.6 cm wide. Staminode lunate, 8-10 mm long, 12-14 mm wide, minutely pubescent.