Leaves 50–80 × 20–30 mm. Flower stem 50–75 mm long. Flower stiffly erect to obliquely erect, 18–22 × 25–30 mm, green to greenish purple or reddish; calli reddish to black; column greenish brown with darker markings. Dorsal sepal broadly spathulate, incurved, 18–22 × 7–9 mm; apical club 2–3 mm long. Lateral sepals recurved beneath labellum, 15–18 × 2.5 mm; apical clubs c. 1 mm long. Petals widely spreading, 15–18 × 4–4.5 mm, tips incurved. Labellum obliquely erect, broadly ovate to heart-shaped, 11–12.5 × 9–12 mm, margins pale green. Calli in dense cluster, mostly column-like. Column 13–15 × 4–5 mm.