Plants 20-38 cm tall. Pseudobulb narrowly cylindric to squat and ovoid, 0.5-1.5 × 0.4-0.6 cm, often connected in tight clumps by a short rhizome, 1- or 2-noded, with a few elongate roots at base. Leaf broadly ovate, 2-7 × 1.5-4 cm, with 3 prominent veins, base rounded or truncate, apex acute; petiole-like base 0.8-3 cm, channeled.

Inflorescence sometimes slightly pendulous toward apex, 20-35 cm; peduncle 14-28 cm, with 1 or 2 long tubular sheaths; rachis 6-12 cm, laxly 12-30-flowered; floral bracts deltoid, minute. Flowers spreading horizontally, opening widely, sepals off-white suffused with brownish purple; petals and lip pale green; pedicel and ovary 5-7 mm. Sepals narrowly oblong-lanceolate, 4-5 × ca. 1.5 mm, apex obtuse. Petals linear to narrowly oblong, ca. 4 × 1 mm, apex obtuse; lip narrowly oblong-ovate, ca. 3.5 × 1.5 mm, 3-lobed near base; disk with a pair of small, fleshy oblong calli at mouth of spur; lateral lobes broadly ovate, ca. 1.5 × 1.2 mm, margin irregularly erose, apex obtuse; mid-lobe ligulate, 2-2.2 mm, apex obtuse; spur spreading horizontally or ascending, slender, 6-7 × ca. 0.4 mm, apex acute. Column ca. 2.2 mm; pollinia borne on a distinct stipe. Fl. Aug.