Plants 15-25 cm tall. Pseudobulb narrowly cylindric, tapering slightly toward base, 1.5-3 × 0.2-0.4 cm, usually 1-or 2-noded, rarely without a node, with 1 or 2 fleshy elongate roots at base. Leaf broadly ovate, 2.5-4 × 1.4-2.5 cm, with 3 prominent veins, base rounded or subtruncate, apex acuminate or obtuse; petiole-like base 1.3-2 cm, channeled. Inflorescence 12-22 cm; peduncle 9-16 cm, with 1 or 2 long tubular sheaths; rachis 3-6 cm, laxly 5-9-flowered; floral bracts deltoid, minute. Flowers spreading horizontally, opening widely, pale purplish brown; pedicel and ovary 4-7 mm. Sepals narrowly oblong-lanceolate, 5.5-7 × ca. 1.8 mm, apex acute. Petals narrowly elliptic, 5-6 × ca. 2 mm, apex acute; lip linear-oblong, 4.5-6.5 × ca. 2.5 mm, 3-lobed near base; lateral lobes broadly ovate, ca. 1.5 × 1.5 mm, margins irregularly incised; mid-lobe ligulate, ca. 4.5 mm; spur spreading horizontally or ascending, slender, 12-15 × ca. 0.7 mm, apex obtuse. Column slightly arcuate, 2.5-3 mm. Fl. Jun-Jul.
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