Plants 21-40 cm tall. Tubers oblong, 1-2 cm × 5-10 mm, fleshy. Stem erect, terete, glabrous, with 3-5 leaves below middle, with 3-10 bractlike leaves above. Leaf blade oblong-lanceolate, 4-8 × 0.6-1.8 cm, base amplexicaul, apex acute. Raceme densely many flowered, ca. 6 cm; floral bracts lanceolate, ca. as long as or longer than flower, apex acuminate; ovary twisted, cylindric-fusiform, including pedicel 8-10 mm. Flowers yellow or yellowish brown. Dorsal sepal erect, narrowly ovate, concave, 6.5-8 × 3.5-4 mm, 3-veined, apex obtuse; lateral sepals obliquely oblong-lanceolate, ca. 9 × 3 mm, 3-veined, apex obtuse. Petals forming a hood with dorsal sepal, falcate-lanceolate, ca. 8 × 2.5 mm, oblique, 2-veined, apex acuminate; lip ca. 1 cm, deeply 3-lobed from base; lobes similar, linear; mid-lobe slightly longer and wider than lateral lobes; spur pendulous, straight, cylindric, 3-5 mm, apex obtuse; stigmas arching, cylindric. Fl. Aug-Sep.
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