A terrestrial herb 2–7 dm. high, almost entirely glabrous.. Tubers ellipsoid or cylindrical, 1–1.5 cm. long, 4–12 mm. in diameter, glabrous or very sparsely pubescent.. Stem erect, slender to rather stout, up to 7 mm. in diameter at the base, leafy throughout its length, terete.. Leaves 6–10; 1 or 2 lowermost reduced to sheaths, remainder almost erect, linear or lanceolate-linear, acute, the largest 7–23 cm. long and 0.5–2 cm. broad, decreasing in size up the stem, the uppermost similar to the bracts.. Inflorescence narrow, 3–24 cm. long, 1.5–2.5 cm. in diameter, densely 4-many-flowered.. Bracts adpressed to the ovary, lanceolate, acute, 0.7–3.5 cm. long, often longer than the pedicel with ovary.. Flowers suberect, green or yellow-green; pedicel with ovary nearly straight, 7–11 mm. long.. Dorsal sepal erect, convex, lanceolate, acute, 6.5–9 mm. long, 3.5–5 mm. broad; laterals spreading, curved upwards, very obliquely lanceolate with the lower margin much rounded, acuminate, 8–10 mm. long, ± 4.5 mm. broad; all sepals 3–5-nerved.. Petals erect, very oblique, fleshy, irregularly and very obliquely oblong, twisted in the middle and often folded over in the upper part, this part with very irregular toothed or crenate margins and often wider than the lower part, altogether 7.5–11 mm. long, 2.5–4 mm. broad, apex not well defined.. Lip dependent, 3-lobed; undivided basal part oblong, ± 3 mm. long; middle lobe linear, obtuse, 9.5–12 mm. long, 1–1.5 mm. broad; side lobes divergent, narrowly linear, 1.5–4.5 mm. long, ± 0.5 mm. broad.. Spur dependent, cylindrical, ± bilobulate at apex, 5–7 mm. long.. Column ± 2–2.5 mm. high; anther-connective 3–4 mm. broad, papillose, loculi diverging, 2–3 mm. long, canals very short, auricles elliptical-quadrate.. Stigmas bilobed from the base, papillose, the lower lobe just over 3 mm. long, upper lobe ± 2 mm. long, often projecting above the connective; rostellum side lobes spreading, tapering, the middle lobe very broad, ± emarginate.
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An orchid. It grows 30-85 cm tall. The leafy stems have up to 10 leaves and the lowest 2 sheath the stem. The flowering shoots are 5-17 cm long by 2-3 cm wide and they have many flowers. The flowers are green. The tubers are 2 cm long.
Lip 3-lobed; basal undivided part c. 3 mm long; mid-lobe 9.5–12 × 1–1.5 mm, linear, obtuse; side lobes 1.5–4.5 × 0.5 mm, narrowly linear; spur pendent, 4–7 mm, slightly bifid at apex.
Dorsal sepal erect, 6.5–10 × 3.5–5 mm, ovate, acute; lateral sepals spreading or reflexed, 8–10 × 4–5 mm, curved upwards, obliquely lanceolate, acuminate.
Stem leafy; leaves up to 10, the 2 lowermost sheathing, the rest erect, up to 14.5 × 4 cm, lanceolate or linear-lanceolate, acute, ribbed.
Petals erect, 7.5–11 × 3–4 mm, fleshy, obliquely oblong, twisted and folded in the middle, the upper part serrated, the apex indistinct.
Column 2–2.5 mm long; anther connective 3–4 mm wide, papillose; loculi diverging, 2–3 mm long, canals 1.5–2 mm long.
Stigmatic arms papillose, 2-lobed from the base; upper lobe 1.5–3.5 mm long; lower lobe 3–3.5 mm long.
Terrestrial herb 30–85 cm tall; tubers up to 2 cm long, ellipsoid.
Bracts leafy, c. 20 mm long, longer than the flower.
Inflorescence 5–17 × 2–3 cm, densely many-flowered.
Ovary and pedicel 8–10 mm long.
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