Plants slender to somewhat robust, 26-57 cm tall. Tubers ovoid-oblong, 1-2.5 × 0.8-1.5 cm. Stem with 3-5 tubular sheaths at base, 4-or 5-leaved. Leaves clustered near middle of stem, elliptic-lanceolate to ovate, 4-9 × 2-3.5 cm, apex acute. Inflorescence 17-41 cm; peduncle cylindric to slightly ridged, slender to stout, ebracteate or with 1 lanceolate sterile bract ca. 10 mm; rachis 7-25 cm, densely many flowered; floral bracts ovate-lanceolate, 8-12 mm, exceeding ovary (and sometimes flowers), apex acuminate. Flowers horizontal, green; ovary 6-9 mm including pedicel. Dorsal sepal erect, ovate, concave, 3.2-4.5 × 1.8-2 mm, 1-veined, apex obtuse; lateral sepals spreading, oblong, oblique, 3.5-5 × ca. 1.5 mm, 1-veined, apex obtuse. Petals spreading, ovate, oblique, 3.5-4.8 × 1.8-2.2 mm, 1-or 2-veined, apex obtuse; lip spreading to deflexed, ovate, 4-5.5 × ca. 2 mm, ecallose, base shallowly concave, 3-lobed near middle; lateral lobes oblong-triangular, ca. 0.8 mm, apex obtuse; mid-lobe oblong, ca. 1.5 mm, slightly broader than lateral lobes, apex obtuse; spur pendulous, fusiform, 1.8-2.5 mm, apex acute, neck contracted. Column ca. 1 mm; viscidia oblong; rostellum with short arms. Fl. Jun-Aug.
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