Rhizome stout, 3-4 mm in diam. Pseudobulbs 3-4 cm apart from each other, ovoid, 1.5-2 cm, 8-13 mm in diam., with a terminal leaf. Petiole ca. 1.5 cm; leaf blade oblong, 10.4-14 × 1.8-2.3 cm, leathery, base contracted into petiole, apex obtuse and retuse. Scape from base of pseudobulb, ca. 5 cm; umbel 1-3-flowered; peduncle with 1 or 2 sheaths; floral bracts lanceolate, ca. 6 mm. Pedicel and ovary ca. 1.5 cm. Sepals and petals pale yellow, with purple spots at adaxial base and purplish red at apex; lip olive-green or turning to tangerine. Dorsal sepal oblong, ca. 15 × 10 mm, margin red ciliate, apex acuminate; lateral sepals obliquely ovate-lanceolate, ca. 20 × 7.5 mm, twisted near base, with their lower edges connate at basal part to each other, apex obtuse. Petals oblong, ca. 10 × 6 mm, entire, mucronate; lip recurved, ovate, attached to end of column foot by a mobile joint, apex obtuse. Column short, with 2 narrowly dentate stelidia on both upper sides and triangular, enlarged wings at middle. Fl. May.
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