Plants slender, 17-48 cm tall. Tubers subglobose to oblong-ellipsoid, 0.8-2 × 0.5-1.5 cm. Stem with 2-4 tubular sheaths at base, 3-5-leaved. Leaves clustered near base to somewhat spaced along stem, elliptic-lanceolate, 2.5-12 × 0.6-3.5 cm, base attenuate, apex acute to obtuse. Inflorescence 13-38 cm; peduncle cylindric, slender; sterile bracts few, lanceolate, to 2 cm; rachis 6-23 cm, laxly to subdensely many flowered; floral bracts ovate-lanceolate, 6-11 mm, shorter than to slightly exceeding ovary, apex acuminate. Flowers erect, pale yellowish green; ovary 7-9 mm including pedicel. Dorsal sepal erect, oblong-ovate, concave, 2-3 × ca. 1.5 mm, 1-veined, apex obtuse; lateral sepals spreading, oblong, 3-3.5 × ca. 1.2 mm, slightly narrower than dorsal sepal, apex obtuse. Petals connivent with dorsal sepal and forming a hood, ovate-oblong, oblique, 3-3.5 × 1.5-2 mm, 1-or 2-veined, apex obtuse; lip narrowly oblong, 3-3.5 × ca. 0.5 mm, divided near base by a transverse ridge into a short, concave hypochile and a longer, deflexed, deeply 3-lobed epichile, ecallose; lateral lobes spreading at right angles to axis of lip, horizontal or ascending, filiform, 8-15 mm; mid-lobe narrowly oblong-lanceolate, 2-3 mm, apex obtuse; spur pendulous, fusiform, 3-5 mm, apex obtuse or sometimes shallowly 2-lobed. Column ca. 1 mm; viscidia ellipsoid. Fl. Jul-Oct.
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