Herbs, terrestrial. Pseudobulbs ovoid or ovoid-oblong, 1-2.5 cm × 8-15 mm, ± enclosed by many white membranous sheaths. Leaves 2, very rarely 1; petiole sheathlike, 0.5-4 cm, amplexicaul, not articulate; blade ovate to elliptic, 2.7-9 × 1.5-5 cm, membranous or herbaceous, base contracted into petiole, margin crisped and irregularly serrate, apex acute or shortly acuminate. Inflorescence 7-28 cm; peduncle flattened cylindric, narrowly winged on either side; rachis laxly several flowered, very rarely many flowered or 1-or 2-flowered; floral bracts ovate or ovate-lanceolate, 1.5-3 mm. Flowers pale purple, sepals often pale yellowish green; pedicel and ovary 1-1.8 cm. Sepals linear-lanceolate, 11.5-18 × 2-2.5 mm, 3-veined, apex acuminate; lateral sepals slightly oblique. Petals nearly filiform, 11.5-18 × ca. 0.3 mm, 1-veined; lip obovate-elliptic, 1.3-2 × 0.8-1.2 cm, often with 2 short longitudinal lamellae near base, sometimes lamellae inconspicuous, apex obtuse or sometimes mucronate. Column arcuate, 3.5-4.5 mm, base dilated and thick, apex winged. Capsule obovoid, ca. 1.7 cm × 7-8 mm, upper part with 6 wings ca. 1.5 mm wide, wings becoming narrower downward; fruiting pedicel 1-1.2 cm. Fl. May, fr. Oct-Nov.
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