Leaf withered at flowering time, 10–30 × 2–4 mm, ovate, upper surface dark green suffused with red, dark red beneath. Flower stem 90–180 mm, 1-or 2-flowered. Flowers 10–15 × 4–6 mm, yellowish green with reddish suffusions, labellum red with black calli. Dorsal sepal 7–9 × 1 mm. Lateral sepals 7–9 × 1 mm, kinked towards apex. Petals 7–9 × 0.5 mm. Labellum obliquely erect when set (often set at steep angle); labellum strap 3–5 × 1.5–2 mm; labellum lamina flat in side view, flask-shaped from above, 6–8 × 2–2.5 mm, widest above base then tapered, apical fifth a short, blunt neck, apex with shiny black calli; basal lobe short, pointed, projected back in same plane as labellum. Column 6–8 mm long.
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