Plants to 50 cm. Roots 6–10 × 5–10 cm. Pseudobulbs 3–8 cm. Leaves 2; petioles concentrically arising from terminal nodes of pseudobulb, inside 3 concentric, polygonal, keeled sheaths, 3–30 cm; blade elliptic, 20–35 × 8–11 cm, apex acute. Inflorescences to 50 cm. Flowers opening partially, white; sepals arcuate; dorsal sepal obovate, concave, 19 × 6 mm; lateral sepals falcate, 15 × 5 mm; petals internally purple-flecked, arcuate-concave, oblique, 13 × 7 mm; lip with 3–5 purplish spots on apical margins, nearly elliptic, arcuate, clawed, 16 × 11 mm. Capsules pendent, ellipsoid, 3 × 1 cm.
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