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Lip 15–17 × 10–13 mm, 3-lobed; side lobes erect, elliptic, rounded in front; mid-lobe 6 × 6 mm, oblong-obovate, obtuse or emarginate, the edge very undulate; callus of 3 fleshy ridges in basal half and 5–7 rows of papillae on mid-lobe.
Flowers semi-erect, not opening wide; sepals green shaded with light brown; petals white; lip white with faint mauve lines and red-purple or white papillae on the mid-lobe.
Sepals 12–17 × 1.5–3 mm, linear, acute, the lateral sepals joined at the base to the column foot.
Perennating organs pseudobulbous, 8–15 mm long, 10–20 mm wide, conical, forming a chain.
Leaves 3–4, erect, to 50 cm × 2–9 mm, linear, plicate, well developed at flowering time.
Inflorescence laxly few-to about 10-flowered; scape almost covered with 3–4 sheaths.
Spur 3.5–5 mm, cylindrical, parallel to ovary but sometimes turned down at apex.
Petals 10–15 × 2.5–5 mm, oblong, acute, lying over column.
Bracts 5–20 mm long, linear-lanceolate, acuminate.
Column 5–6 mm long; foot 3 mm long.
Ovary and pedicel 13–22 mm long.
Terrestrial herb 40–60 cm tall.
Capsule pendent, c. 24 mm long.
