Rhizome creeping, ca. 3 mm in diam. Pseudobulbs ca. 1 cm apart from each other, ovoid-conic or narrowly ovoid, 2-2.5 cm, 7-10 mm in diam., ribbed, with a terminal leaf. Petiole 1-2 cm; leaf blade elliptic-oblong, 7-14 × ca. 3 cm, leathery, base contracted into petiole, apex obtuse-rounded. Scape from base of pseudobulb, erect, 10-15 cm, slender; umbel often 2-or 3-flowered; peduncle ca. 1 mm in diam., sparsely with 2 or 3 tubular sheaths; floral bracts ovate-lanceolate, ca. 5 mm, apex acuminate. Pedicel and ovary ca. 2.5 mm. Flowers yellow, spotted with red. Dorsal sepal broadly ovate, concave, 8-10 × 6-7 mm, apex subtruncate and mucronulate; lateral sepals obliquely ovate-lanceolate, 10-11 × ca. 6 mm, ± narrowed and twisted near base, their lower margin connate to each other toward base, apex obtuse. Petals broadly ovate-triangular, ca. 4.5 × 4 mm, base ca. 1/3 width adnate to column foot, margin entire, apex mucronate; lip recurved, subovate in outline, ca. 5 × 3.4 mm, adaxially with 3 longitudinal keels, base dilated and attached to end of column foot, immobile, apex emarginate. Column ca. 3 mm, with triangular, acute wings along lower margins; foot ca. 5 mm, with free part ca. 2 mm, upcurved; stelidia filiform, ca. 2.8 mm; anther cap subglobose, glabrous. Fl. Aug.
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