Rhizome creeping, ca. 3 mm in diam., rooting from base of pseudobulbs. Pseudobulbs 1-2.5 cm apart from each other, ovoid-conic or narrowly ovoid, 1.5-2.5 cm, 0.7-1.2 cm in diam., ribbed, with a terminal leaf. Petiole conduplicate, 5-10 mm; leaf blade elliptic-oblong, (4-)7-15 × (1-)1.5-2 cm, leathery, apex obtuse and slightly emarginate. Scape from base of pseudobulb, erect, yellowish with reddish purple dots, ca. 6 cm, ca. 1 mm in diam.; umbel 2-or 3-flowered; peduncle ca. 2 mm in diam., below middle with 2 or 3 tubular sheaths; floral bracts narrowly oblong, boat-shaped, ca. 1.1 cm. Pedicel and ovary tenuous, ca. 2.5 cm, densely covered with reddish purple fine dots. Flowers yellowish with purplish brown veins. Dorsal sepal broadly ovate, concave, 13-14 × 8-9 mm, apex acuminate with a thread ca. 3 mm, 7-veined, margin entire; lateral sepals narrowly lanceolate, ca. 30 × 4-4.5 mm, margin entire, connate to each other along their upper edges except near base, adnate to column foot, twisted near base. Petals elliptic-ovate, 6.5-7 × ca. 3.5 mm, tapering and acuminate with a thread ca. 1.5 mm, 3-veined; lip greenish brown, ovate-lanceolate, ca. 6.5 mm, ca. 3.5 mm wide at base, attached to end of column foot by a mobile joint, margins ciliate, above middle abruptly narrowed and curved downward, adaxially with 2 fleshy, ciliate keels, apex subacute. Column ca. 2.5 mm, with obtusely triangular, rounded wings near base, foot ca. 5 mm; stelidia subtriangular, together with thin apex ca. 2 mm, ca. 1 mm wide at base; anther cap subglobose, fimbriate in front, adaxially small papillate. Fl. Mar.
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