Plants somewhat robust, 50-70 cm tall. Tubers ellipsoid, 3-5 cm, with a few slender, elongate lobes. Stem stout, with 2 or 3 tubular sheaths at base and 6-8 cauline leaves. Leaves widely spaced, elliptic, narrowly elliptic, or lanceolate, 9-13 × 2-4 cm, apex acuminate. Inflorescence elongate, ca. 25 cm; peduncle with 2 lanceolate bracts to 5 cm; rachis 8-11.5 cm, densely many flowered; floral bracts ovate-lanceolate to lanceolate, apex acuminate, basal ones longer than flowers. Flowers pale yellowish green, relatively small; ovary 6-7 mm including pedicel. Dorsal sepal erect, broadly ovate, slightly concave, ca. 2.5 × 2 mm, 3-veined, apex obtuse; lateral sepals recurved, broadly ovate, ca. 3 × 2.3 mm, 3-veined, apex obtuse. Petals rhombic-ovate, oblique, ca. 3 × 2.3 mm, 3-veined, apex obtuse; lip rhombic-ovate, ca. 3 × 2.5 mm, almost entire; lateral lobes much reduced; mid-lobe ovate-orbicular, ca. 2 mm wide, apex obtuse; spur pendulous, slightly curved forward, 3-3.5 mm, much shorter than ovary, slender, shallowly 2-lobed at apex. Column ca. 0.8 mm. Fl. Jul-Aug.
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