Leaf 100–250 mm long; free part 10–18 mm long, ending below flowers. Spike 10–30 mm long, 5–30-flowered. Flowers moderately crowded, semi-nodding, 5 × 4 mm, green with purple-brown labellum. Dorsal sepal 3.8 × 2.5 mm; margins glabrous; apex sharply pointed. Lateral sepals deflexed, divergent, 4.5 × 1 mm, base humped. Petals 3 × 0.8 mm, spreading; margins glabrous; apex sharply pointed. Labellum stiffly hinged, 2.5 × 0.8 mm, oblong, fleshy; margins glabrous; apex sharply pointed and recurved. Callus dark purplish black, thickest and broadest near base then narrowed and drawn-out to blunt apex, extending nearly to labellum apex.