Plants forming small clumps. Pseudobulbs absent. Stems flattened, in tufts of 2–6, 20–50 mm wide. Leaves erect or arching, 3–6 per stem, 200–300 × 25–28 mm, dark green, thin, ridged beneath, unequally notched. Racemes from leaf axil, 200–400 mm long, stiff, thin, 6–15-flowered. Ovaries triangular in cross-section. Flowers 5–7 × 3–4 mm, base tubular and green, upper parts white and spreading. Dorsal sepal humped at base, 4–6 × 1–1.5 mm. Lateral sepals strongly ridged, triangular in cross-section, 4–6 × 1–1.5 mm. Petals 3–5 × 0.8 mm. Labellum decurved, heart-shaped at base, constricted near middle, 4–4.5 × 2.5 mm, apex decurved. Callus narrow, with 2 basal swellings.
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