Plants 9–25 cm. Pseudobulbs ovoid, 20 ×10 mm, sheathed by bracts and persistent leaf bases, previous year’s pseudobulb usually present, connected by short rhizome. Stems bright green, with or without purplish brown tinge, angled, sometimes obscurely winged or fluted distally. Leaves 2; blade conduplicate, dark green, glossy, ovate-elliptic, keeled abaxially, 4–18 × 2–8.5 cm, succulent, apex obtuse to acute. Inflorescences 4–15 cm; floral bracts subulate, 2 × 1 mm, apex acute; pedicels slender, 5–7 mm. Flowers 5–31, mauve-purple and green; dorsal sepal oblong-lanceolate to narrowly lanceolate, 8–11.5 × 1.2–2 mm, apex obtuse to acute; lateral sepals oblong-lanceolate to narrowly lanceolate, 8–11.5 × 1.2–2 mm, apex obtuse to acute; petals pendent, curved, tubular, narrowly linear to filiform, 8.5–12 × 0.2–0.3 mm, margins strongly revolute; lip translucent, mauve to pale purple or rarely green with prominent purplish veining, cuneate-obovate to suborbiculate, 8–12 × 6–10 mm, base slightly auriculate, apical margin erose-serrulate, apex subtruncate, mucro-nate; column winged apically, 3–4 × 1–1.5 mm, with 2 blunt tubercles on inner surface near base; anthers yellow; pollinia yellow. Capsules: pedicel 11–18 mm; body ellipsoid, 15 × 5 mm, veins often slightly winged.
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