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Inflorescence 9–21 cm long, densely many-flowered; peduncle with 3 scarious sheaths; rhachis terete; bract distichous, boat-shaped, c. 8 mm long, green in bud but turning brown when flowers open.
Pseudobulbs borne 1–3 cm apart on a woody rhizome, 2-leaved, 3–11 × 0.4–1.3 cm, narrowly conical to almost cylindrical, smooth, green, usually with 4 purple vertical lines.
Dorsal sepal 3–7.5 × 1.5–3 mm, ovate, acute; lateral sepals 2–7 × 1–3 mm, lanceolate, acute, reflexed near the base.
Lip 1.5–5 × 0.3–1.5 mm, linear, fleshy at the base, long ciliate on the margin in the apical half.
Leaves 7–23 × 0.5–1.3 cm, linear or linear-lanceolate, dark green.
Sepals yellow-green with purple lip or whole flower purple or red.
Flowers tinged green with purple or mauve, with dark purple lip.
Petals 1–2.5 × 0.2–0.8 mm, linear, parallel to the column.
Column 1–2 mm long; stelidia c. 1 mm long, long acuminate.
Erect, epiphytic herb with a stout branching rhizome.
Ovary and pedicel 2.5 mm long.
Pseudobulbs often purplish
Leaves often purplish
