Flowering stem 20–40 cm tall. Leaf-blade to 25 cm long, 3–4 mm diam. at base, dark green, apex lax, often withered at flowering. Flowers 10–25, fragrant, greenish brown to brownish, sessile in a moderately dense to dense spike 6–12 cm long; ovary obovoid, 5–6 mm long, green, about 40 deg. to the rachis; sepals 6–10 mm long, dorsal sepal ovate-lanceolate, lateral sepals free, linear-lanceolate, widely divergent, erect to slightly recurved distally; petals 7.5–8.5 mm long, oblong-lanceolate, apex obtuse to subacute. Labellum ovate, 6–7 mm long, white, recurved at right angles just past the middle; base not pouched, margins flared, entire or slightly irregular, minutely papillate; apex triangular, acute, margins slightly crispate; callus plate much-raised, channelled, extending about two-thirds of the way to labellum apex, dark green to pale green, shiny. Column appendages oblong, c. 3 mm long, obtuse. Flowers Oct.–Nov.
