Plants 14-83 cm tall. Tubers subglobose to ellipsoid, 10-15 × 5-12 mm. Stem with 2 tubular sheaths at base, 2-4-leaved. Leaves cauline, often widely spaced, alternate, linear to linear-lanceolate, 6-20 × 0.5-1.4 cm, apex acute or acuminate. Inflorescence 12-43 cm; peduncle cylindric, with 1 to a few linear-lanceolate sterile bracts 1-6 cm; rachis 6-31 cm, laxly to subdensely many flowered; floral bracts lanceolate, 2-8 mm, shorter than or occasionally exceeding ovary, apex acuminate. Flowers erect or horizontal, pale yellowish green to green; ovary straight to slightly arcuate, 5-7 mm including pedicel. Dorsal sepal suberect, ovate to oblong, concave, 2-4 × 1-1.5 mm, 1-veined, apex obtuse; lateral sepals spreading, oblong to ovate-oblong, oblique, 2.2-4 × 1-2 mm, 1-veined, apex subobtuse or acute. Petals forming a hood, linear, 2-4 × 0.2-1 mm, 1-veined, apex obtuse to subacute; lip often pendulous, oblong, 4-10 × 1-2 mm, base dilated and concave, furcately 3-lobed near middle; disk ridged; lateral lobes linear, 2-7 mm; mid-lobe oblong to triangular, to ca. 1 mm, apex acute to obtuse. Column ca. 0.8 mm; pollinia globose; viscidia orbicular. Fl. Jun-Aug. 2n = 38, 40, 42, 76.
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An orchid. It is 14-83 cm tall. The tubers are round or oval and 10-15 mm long by 5-12 mm wide. The stem has 2 tube shaped sheaths at the base. There are 2-4 leaves widely spaced on the stem. They are 6-20 cm long by 1 cm wide. The flowering stalk is 12-43 cm long. There are many flowers. They are pale yellowish green.
It is a tropical plant. It grows in mixed forests, bamboo forests and grasslands between 700-3,600 m above sea level in southern China. It grows in Yunnan in China. In Sichuan.
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