A terrestrial herb 3–7 dm. high, glabrous except for the roots.. Tubers globose or ellipsoid, 1.8–2.4 cm. long, 1.3–2 cm. in diameter, densely tomen-tose.. Stem erect, slender, leafy all along.. Leaves 9–12, the lowermost 3–4 sheath-like, the remainder lanceolate or narrowly lanceolate, acute or acuminate, the base of the lamina ± enfolding the stem, the largest in the middle, 3.5–8 cm. long and 8–15 mm. broad.. Inflorescence 10–23 cm. long, 3–5 cm. in diameter, rather loosely or loosely 12–23-flowered.. Bracts broadly lanceolate, acuminate, the lower ones 13–28 mm. long, the lowermost often overtopping the flowers.. Flowers suberect or spreading, green, with the petals and lip tinged whitish or yellowish, fragrant; pedicel with ovary curved, 12–20 mm. long.. Dorsal sepal erect, ovate, elliptical-ovate or broadly ovate, obtuse, convex, 7–11 mm. long, 5–8.5 mm. broad; laterals deflexed, obliquely lanceolate, subacute, 8–12 mm. long, 3–4.5 mm. broad.. Petals bipartite nearly to the base; posterior (upper) lobe erect, curved, linear, 6.5–11.5 mm. long, ± 1 mm. broad; anterior lobe curved forwards and upwards, narrowly linear, 7.5–15.5 mm. long, usually narrower than the posterior.. Lip deflexed, 3-lobed from an entire base 2–3.5 mm. long; middle lobe ligulate, 6–10 mm. long, ± 1 mm. broad; side lobes about the same length but narrower.. Spur with basal part parallel to the ovary, the apical half strongly recurved and often placed vertically, much swollen at the apex, 8–11 mm. long.. Anther 2–3 mm. tall, rounded at apex, canals porrect, 1–2 mm. long.. Stigmas decurved on to the lip-base, slightly club-shaped, 2.5–4 mm. long.. Rostellum broadly rounded-triangular.. Fig. 16, p. 78.
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Lip 3-lobed with basal undivided part 2–3.5 mm long; mid-lobe 6.5–12 × c. 1 mm, linear, deflexed; side lobes 5.4–10 × c. 0.5 mm, usually shorter and narrower than mid-lobe; spur 8–11 mm long, the basal half parallel to ovary, then abruptly bent up so that the apex is held above the flower, the apical 3 mm very inflated.
Petals 2-lobed ± to base; posterior lobe 6.5–10.6 × c. 1 mm, erect, linear, adnate to dorsal sepal; anterior lobe 7.5–15.5 mm long, less than 1 mm wide, deflexed then curving up.
Leaves 8–10, the lowermost 3–4 sheath-like, the upper ones grading into bracts, the rest 3.5–8.5 × 1.2–1.8 cm, lanceolate, acute.
Dorsal sepal 6.5–11 × 4.5–8.5 mm, ovate, erect, convex; lateral sepals 8–12 × 3–4.5 mm, obliquely lanceolate, deflexed.
Slender terrestrial herb 25–66 cm high; tubers up to 3 cm long, globose to ellipsoid, tomentose.
Inflorescence fairly laxly up to c. 20-flowered; bracts leafy, usually shorter than the flower.
Stigmas 2.5–4 mm long, lying along base of lip.
Ovary and pedicel (10)15–22 mm long, arched.
Anther 2–3 mm high; canals 1.3–2.2 mm long.
Stem leafy along its length.
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