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Lip 12–17 mm long, 6.5–12 mm wide when flattened, 3-lobed, with 2 papillose ridges in the basal half and long papillae on the mid-lobe; side lobes erect, rounded; mid-lobe oblong, 10 mm wide, obtuse or apiculate, the margin erose; spur 2–3 mm long, cylindrical, slender but sometimes slightly swollen at apex, at right angles to the lip.
Perennating organs subterranean, tuberous, 2–3 cm long, 1.2–2 cm in diameter, irregularly ellipsoid, rather flattened, forming a short chain; roots 1–1.5 mm in diameter.
Flowers rather bell-shaped, primrose-yellow or pale lemon-yellow, the side lobes of the lip tinged and edged with purple.
Leaves 1–3, erect, 15–31 cm × 1–6 mm, linear, acuminate, plicate, grass-like, partly developed at flowering time.
Sepals 17–25 × 3–8 mm, lanceolate, acute or acuminate, the laterals slightly longer than the dorsal.
Bracts 8–22 mm long, lanceolate, acuminate, ± scarious, spreading or reflexed.
Inflorescence 2–10-flowered; scape with 2 scarious sheaths.
Petals 14–17 × 4–8 mm, oblong-elliptic, acute or obtuse.
Pedicel and ovary arched, 8–15 mm long.
Slender terrestrial herb 20–30 cm tall.
Column 3–4.5 mm long; foot 3 mm long.
Capsule pendent, 11–14 mm long.
