Leaf 400–1400 × 5–8 mm. Inflorescence 250–600 mm long, 20–60-flowered. Pedicels c. 1 mm long. Flowers crowded, 2.5–3 × 2–2.5 mm, green. Dorsal sepal obliquely erect, ovate, 2–2.5 × 2–2.2 mm, with a short mucro. Lateral sepals narrowly lanceolate, 2–2.5 × 0.8–0.9 mm, recurved to inrolled. Petals linear, shallowly curved, 1.6–1.8 × 0.6–0.7 mm, erect within dorsal sepal, blunt. Labellum decurved, ovate-oblong, 1.6–1.8 × 1–1.2 mm, tapered gently to apex, crinkled, with numerous marginal cell-clusters; apex shallowly notched. Basal callus of 2 dark green, fused mounds; apical callus elliptic, granular.
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