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Lip 8.5–14 mm long, of similar width when spread out, very convex with a projecting apex, wide-mouthed, hairy inside at base.
Sepals and petals projecting forwards, joined to each other in basal half or third and to lip in basal third or quarter.
Median sepal 9–11 × 1.3–2.5 mm, ligulate; lateral sepals of similar length but about twice as wide, oblique.
Column 5–6.5 mm high, slender; stigma c. 1.5 mm high and slightly wider; rostellum shortly 3-toothed.
Robust terrestrial herb 30–90 cm high; tubers to 2.5 cm long, ellipsoid, tomentose.
Flowers white, often with purple marks at base of petals and inside lip.
Lip 8.5–14 mm long, of similar length but about twice as wide, oblique.
Petals similar to median sepal but slightly shorter and narrower.
Petals similar to median sepal but slightly shorter and narrower.
Inflorescence 3–6 × 2.5–4 cm, pyramidal, densely many-flowered.
Spurs saccate, 1–2.5 mm long, sometimes almost absent.
Bracts to 26 mm long, erect, pale green.
Ovary 6–10 mm, very slightly pubescent.
