A terrestrial herb 2–5 dm. high.. Tubers ovoid or ellipsoid, 1–4 cm. long, 1–2 cm. in diameter, woolly.. Stem erect, leafy, rather stout.. Leaves 5–7, the lowermost 1–2 sheath-like, the remainder lanceolate, ovate-lanceolate or elliptical-lanceolate, acute, the largest 5–12 cm. long and 1.5–5 cm. broad, the upper ones smaller, similar to the bracts.. Inflorescence up to 12 cm. long, rather loosely 2–9-flowered.. Bracts leaf-like, lanceolate, acute, the lower ones equalling or longer than the flowers.. Flowers suberect, green or whitish-green; pedicel with ovary 2.3–3 cm. long.. Dorsal sepal erect, adherent to petals, ovate to narrowly lanceolate, acute, 2–2.6 cm. long, 7–11 mm. broad; laterals spreading or defiexed, obliquely lanceolate, acuminate, about as long and as broad as the dorsal; all sepals ciliolate.. Petals adherent to the dorsal sepal, lanceolate, much curved, 2–2.5 cm. long, about as broad as the dorsal sepal, very shortly papillose-hairy and ciliolate.. Lip united to the base of the column for ± 6 mm., almost glabrous, with a narrow undivided claw 9–15 mm. long, then 3-lobed, ± 3 cm. long; middle lobe linear, obtuse, 1.4–2.3 cm. long, 1–2 mm. broad, with a longitudinal ridge; side lobes diverging but ± incurved, rather longer than the middle lobe, with 6–10 narrow threads on the outer margins.. Spur ± incurved, often sharply bent in the middle, slightly swollen in the apical half, 2–3.5 cm. long.. Anther-connective horseshoe-shaped, ± 2–3 mm. high and 12–15 mm. broad, loculi at each end, canals slender, erect, ± 3.5 mm. long, auricles sessile.. Stigmas 10–17 mm. long, attached in the lower half or third to the rostellum side lobes, receptive part swollen, 3–6 mm. long.. Rostellum middle lobe scarcely distinguishable, very broad.
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