Herbs, epiphytic. Rhizomes elongate, 2-2.5 mm in diam., with many nodes, internodes 2-8 mm, often with remaining membranous sheaths. Pseudobulbs borne 1.5-4 cm apart from each other, subcylindric or narrowly ovoid-cylindric, ca. 1.2 cm × 3-7 mm. Leaf 1; petiole 1.5-4 cm, articulate; blade elliptic, narrowly elliptic, or oblong, 6-15 × 1.6-1.8 cm, papery, base contracted into petiole, apex acuminate.

 Inflorescence 7-14 cm; peduncle compressed cylindric, narrowly winged; rachis ca. 5 mm, 3- or 4-flowered; floral bracts green, lanceolate or narrowly lanceolate, 5-15 mm. Flowers green or greenish white; pedicel and ovary 1.5-2.2 cm. Dorsal sepal broadly linear or broadly linear-lanceolate, 9-10 × 1.5-2 mm, margin revolute, apex obtuse; lateral sepals sublanceolate, slightly oblique, 9-10 × ca. 2 mm. Petals filiform, 9-10 × ca. 0.5 mm; lip subflabellate-oblate or broadly obovate-orbicular, 8-9 × ca. 10 mm, base with 2 very small calli united basally, apex subtruncate and usually irregularly denticulate and centrally apiculate. Column slightly arcuate, ca. 4 mm, apical half winged on both sides; wings ca. 1 mm wide, decurved and hooked. Capsule obovoid, ca. 1.4 cm × 7-9 mm; fruiting pedicel 1.2-1.8 cm.

 Fl. Nov-Feb, fr. Jan-Apr. 2n = 38*.