Pseudobulbs 30–40 × 25–30 mm, dark green or yellowish green. Leaves 1–2, 100–200 × 25–30 mm, curved, dark green to yellowish green, often folded, midrib keeled. Racemes 100–250 mm long, 5–30-flowered. Flowers 7–9 × 7–10 mm, greenish yellow to yellowish with orange labellum. Sepals and petals narrow, spreading or slightly decurved. Dorsal sepal 7–9 × 2 mm. Lateral sepals 7–9 × 2mm. Petals 6–8 × 1 mm. Labellum 6–8 × 3–3.5 mm, base deeply channelled with 2 orange ridges c. 3 mm long, apex blunt with irregular margins.