Herbs, terrestrial. Pseudobulbs subovoid, 1.3-2.2 × 1-1.5 cm, noded, ± enclosed by white membranous sheaths. Leaves 2 or 3; petiole sheathlike, 2.5-10 cm, not articulate; blade narrowly elliptic, ovate-oblong, oblong-lanceolate, or linear-lanceolate, 6-17 × 2.5-6 cm, membranous or herbaceous, base contracted into petiole, margin entire, apex acuminate. Inflorescence 14-40 cm, conspicuously exceeding leaves; rachis laxly several to 10-flowered; floral bracts often spreading horizontally, lanceolate, 4-6 mm. Flowers greenish yellow or greenish brownish; pedicel and ovary 6-8 mm. Dorsal sepal linear, 7-8 × ca. 1.5 mm, inconspicuously 3-veined, margin revolute, apex obtuse; lateral sepals ovate-oblong, slightly oblique, 6-7 × ca. 2.5 mm, 3(or 4)-veined. Petals nearly narrowly linear, 6-7 × ca. 0.8 mm, widened toward apex, 1-veined, margin revolute; lip obovate-oblong, ca. 5.5 × 3.5-4.5 mm, with 2 triangular calli near base, apical margin denticulate, apex subtruncate and emarginate; calli ± united at base, ca. 0.8 mm tall. Column slightly arcuate, ca. 4.5 mm, with narrow wings on both sides, wings gradually widened toward column apex. Capsule obovoid-oblong or ellipsoid, 1-1.5 cm. Fl. Apr-Jul, fr. Oct. 2n = 36, 42.
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