Roots borne at internodes. Pseudobulbs greenish yellow when dry, subcylindric, narrowly fusiform to clavate, 4-10 cm × 6-20 mm, sheathed at base, sparsely wrinkled. Leaf blade elliptic-lanceolate to oblong-lanceolate, 12-19 × 2.5-4.2 cm, apex acuminate or shortly cuspidate; petiole 1.5-2.5 cm. Inflorescence proteranthous, decurved; peduncle sheathed when young; rachis laxly several flowered; floral bracts caducous, linear, acute. Flowers white, 1.5-2.2 cm; pedicel and ovary 1-1.2 cm. Dorsal sepal linear-oblong, cymbiform, 13-15 × ca. 2 mm, abaxially ± carinate, 5-veined, acute; lateral sepals somewhat oblique. Petals linear, ca. 14 × 0.7 mm, 3-veined, acute; lip 3-lobed; lateral lobes erect, embracing column, reaching ca. 1/4 length of column, triangular-ovate, 15-20 × ca. 0.5 mm; mid-lobe oblong-lanceolate, 10-12 × 2.5-3 mm, base shortly clawed, apex acuminate; sac with 3 or 4 short thickened ridges. Column subclavate, 1.3-1.4 cm, upper part winged; anther cap ellipsoid, ca. 1 mm; rostellum ligulate, ca. 0.7 mm. Capsule subobovoid-ellipsoid, 1.5-2 cm. Fl. Oct-Nov.
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