Rhizome creeping, ca. 3 mm in diam., with straw-yellow sheaths. Pseudobulbs ovoid, 1-1.5 cm, 6-8 mm in diam., with a terminal leaf. Petiole 3-7 mm; leaf blade oblong, 4-7 × 1.7-2.5 cm, thickly leathery, apex rounded and retuse. Scape from base of pseudobulb, 8-12 cm; umbel 4-or 5-flowered; peduncle pale purplish red, slender, ca. 1 mm in diam., with 2 sheaths; floral bracts subulate, ca. 3 mm, apex acuminate or apiculate. Pedicel and ovary ca. 4 mm, deep red. Flowers yellow, with dark red margins on dorsal sepal and petals, densely spotted with dark purple-red on lateral sepals and tinged with orange on lip. Dorsal sepal subovate, concave, ca. 5 × 4 mm, margins with dark red fimbriate cilia, apex long caudate; lateral sepals obliquely lanceolate, twisted near base, their upper edges connate to each other forming an elliptic synsepal 1.8-2 × 0.7-0.8 cm. Petals obliquely ovate, ca. 4 × 2.5 mm, margins fimbriate-ciliate, apex long caudate; lip recurved, ligulate, fleshy, base attached to end of column foot by a mobile joint, adaxially with 2 grooves and 1 longitudinal keel between them. Column ca. 3 mm, with triangular, enlarged wings at base; foot distinct; stelidia very short; anther cap glabrous. Fl. Apr. 2n = 38*.
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