Plants 20-70 cm tall. Rhizome short. Stem glabrous toward base, becoming pubescent above, with 2 or 3 scalelike sheaths near base. Leaves 4-7, ovate-orbicular, ovate, or elliptic-lanceolate, rarely lanceolate, upper ones narrower and lanceolate to linear-lanceolate, 3-13 cm long, 1-6 cm wide, glabrous, apex acuminate to long acuminate. Rachis 10-30 cm, pubescent, laxly to subdensely 7-40-flowered; floral bracts foliaceous, linear-lanceolate, lower ones exceeding flowers, becoming shorter above. Flowers usually nodding, resupinate, green or pale purple, out-crossing; pedicel and ovary 10-15 mm, yellow-brown tomentose. Dorsal sepal ovate-lanceolate, rarely elliptic, cymbiform, 8-13 mm long, 4-5 mm wide, apex acuminate; lateral sepals ovate-lanceolate, oblique, 9-13 mm long, ca. 4 mm wide, apex acuminate. Petals elliptic, 6.5-8 mm long, 3-4 mm wide, apex acute or obtuse; lip 6-8 mm, without a mesochile; hypochile semiglobose-saccate, 3-4 mm; epichile subtriangular or suboblate, ca. 3 mm long, 3-4 mm wide, veins sometimes thickened near apex, with a pair of semiorbicular, erose lamellae toward base of epichile, apex acute. Column 3-5 mm. Capsule obovoid-ellipsoid, ca. 10 mm, puberulent.