Flowering stem slender to stout, 30–60 cm tall. Leaf-blade 12–20 cm long, 3–5 mm diam. at base, apex suberect, senescent at flowering time. Flowers 12–30, green to greenish brown, pink or mauve, fragrant, in a moderately crowded spike 8–15 cm long; ovary obovoid, 4–5 mm long; sepals 8–12 mm long, dorsal sepal ovate-lanceolate, lateral sepals free, linear-lanceolate, recurved distally, widely divergent; petals linear-lanceolate, 7–10 mm long, spreading widely. Labellum sessile, porrect, 7–9 mm long, recurved at about right angles just beyond middle, lamina usually pink or white, distal margins slightly undulate-crispate; callus plate prominently raised, shallowly channelled, mostly greenish, broad at base then tapered, extending three-quarters of the way to the labellum apex. Column appendages obovate, c. 3 mm long. Flowers Nov.–Dec.
