Flowering stem slender, 30–50 cm tall. Leaf-blade 10–15 cm long, 2–3 mm diam. at base, apex suberect, senescent at flowering time. Flowers 10–20, greenish brown, light brown, pink or white, fragrant, in an open spike 5–12 cm long; ovary obovoid, 3–5 mm long; sepals 8–12 mm long, thin-textured, dorsal sepal ovate-lanceolate, lateral sepals free or fused only at base, linear-lanceolate, recurved, parallel or slightly spreading; petals linear-lanceolate, 6–9 mm long, porrect or incurved. Labellum subsessile, porrect, 6–8 mm long, recurved at about right angles near middle, lamina usually pink or white, distal margins irregular; callus plate prominently raised, channelled, greenish, broad at base then tapered, extending almost to the labellum apex. Column appendages linear, c. 1.8 mm long. Flowers Oct.–Nov.
