Leaves 2, 150–250 × 4–6 mm, folded. Flower stem 300–400 mm, 2–8-flowered. Flowers 20–30 mm across, yellow with dark reddish markings on dorsal sepal, labellum lobes and exterior surface of petal blades. Dorsal sepal ovate, erect, 8–10 × 5–7 mm, base dark. Lateral sepals deflexed, 9–13 × 2–3 mm, crossed and recurved. Petals recurved; stalk 4–5 mm long, blackish; blade circular to ovate, 8–10 × 6–7 mm. Labellum 8–10 mm long; lateral lobes spreading widely, 4–5 × 2.5–3 mm, margins irregular; midlobe, wedge-shaped, 6–8 × 6–8 mm, folded along midline. Callus ridges 2, 4–5 mm long, thick.
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