Plants slender, 17-50 cm tall. Tubers oblong, 2-4 × 1-2 cm. Stem with 2 tubular sheaths at base, 4-or 5-leaved. Leaves widely spaced along stem, oblong-lanceolate, 5-10 × 0.8-2 cm, apex acute or acuminate. Inflorescence 11-33 cm; peduncle cylindric, slender; sterile bracts 4-8, lanceolate, to 2.4 cm; rachis 5-21 cm, subdensely many flowered; floral bracts lanceolate, to 9 mm, basal ones sometimes exceeding flowers, apex acuminate. Flowers erect, yellowish green; ovary ca. 7 mm including pedicel. Dorsal sepal erect, ovate, concave, ca. 4 × 2.5 mm, 3-veined, apex obtuse; lateral sepals reflexed, oblong, oblique, ca. 4 × 2 mm, 3-veined, apex obtuse. Petals connivent with dorsal sepal and forming a hood, ovate-lanceolate, slightly oblique, 4.5-5 × ca. 1.5 mm, 1-veined, apex acute; lip narrowly oblong, ca. 6 × 1 mm, deeply 3-lobed near base, ecallose; lateral lobes spreading almost at right angles to axis of lip, linear, 5-6 mm; mid-lobe narrowly oblong, ca. 3 mm, apex obtuse; spur pendulous, cylindric-clavate, ca. 3.5 mm, apex obtuse or sometimes shallowly 2-lobed. Column ca. 1 mm; viscidia ellipsoid; rostellum with short arms. Fl. Jul-Sep.
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