A terrestrial herb 1–8 dm. high.. Tubers globose or ellipsoid, 1–2.5 cm. long and ± 1 cm. in diameter.. Stem erect, leafy.. Leaves ± erect, 4–9, the lowest 1 or 2 sheath-like, the remainder lanceolate, oblong-lanceolate or lanceolate-linear, gradually tapering to an acute point, the longest 6–24 cm. long and 0.5–2.5 cm. broad, the upper ones decreasing in size up the stem, the uppermost often bract-like.. Inflorescence cylindrical, 5–30 cm. long, 1–3 cm. in diameter, densely many-flowered.. Bracts narrowly lanceolate, acuminate, the lower ones usually longer than the flowers.. Flowers suberect or curved outwards, green; ovary almost sessile, 7–10 mm. long.. Dorsal sepal elliptical-lanceolate, acuminate, convex, 4–6.5 mm. long, 2–3 mm. broad; laterals spreading, very obliquely lanceolate-ovate or lanceolate, acuminate, 5–9.5 mm. long, rather broader than the dorsal.. Petals curved-elliptical or-oblong, rounded at apex, equalling the dorsal sepal.. Lip with a broad cordate undivided base, 3-lobed in the apical two-thirds, 7–12 mm. long; lobes ligulate to linear, the middle lobe about twice as long as the side lobes, 5–9.5 mm. long, the side lobes ± spreading or recurved, narrower than the middle lobe.. Spur cylindrical, 1.5–3 mm. long.. Anther erect, 1.5–3 mm. high, loculi parallel, canals scarcely developed.. Stigmas club-shaped, rounded at apex, 1.5–2 mm. long.. Rostellum very broad but folded, the middle lobe short and blunt.
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Numerous green or yellowish green flowers in long dense spikes.
A terrestrial rather leafy herb up to 4 ft. high