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Lip 11–16 mm long, 9–9.5 mm wide when flattened, 3-lobed in the apical third; side lobes erect, rounded and erose in front; mid-lobe 6–7 × 5–6 mm, obovate-oblong, the edge undulate; callus of 3 basal ridges with 3–5 lines of long papillae on the mid-lobe; spur 3–8 mm long, rather stout, bulbous at tip, straight or decurved.
Flowers rather untidy-looking, arising at various angles, not opening wide, violet-scented; sepals brownish or yellow-green tinged with purple, petals yellow-green or white tinged with purple or brown, lip white with purple veins.
Perennating organs subterranean, fleshy, rhizomatous, cigar-shaped, much branched, 5–7 cm long or more, 1.5–2.5 cm in diameter, with many nodes and triangular scales; roots numerous, 1–1.5 mm in diameter.
Inflorescences 1–3, laxly or densely many-flowered; scape yellow-green with 4–5 imbricate, scarious, basal sheaths and another in the middle.
Pedicel and ovary 9–16 mm long, the ovary slightly verrucose, soon swelling.
Robust, terrestrial, semi-saprophytic herb 25–40 cm tall, drying black.
Petals 10–14 × 3–4 mm, narrowly elliptic, acute, overlying the column.
Sepals 12–20 × 2–3.5 mm, oblong, acute, keeled.
Fruit 28–30 mm long, pendent, ellipsoid.
Leaves vestigial, to 6 cm long, brown.
Column 5 mm long; foot 1–2 mm long.
Bracts 9–25 mm long, linear-setose.
