Plants autotrophic, 4-20 cm tall. Rhizome with a few elongate, filiform roots. Stem cylindric, slender. Leaves 2, opposite, borne at ca. middle of plant, sessile, ovate or ovate-orbicular, 1.5-2 × 1.2-1.8 cm, base rounded, apex acute. Peduncle 2-5 cm, pubescent; rachis 2-6 cm, pubescent, subdensely 2-5-flowered; floral bracts ovate-lanceolate, 6-7 × ca. 3 mm, with 3 inconspicuous veins, apex obtuse. Flowers resupinate, light green, with lip tinged yellowish green at margins, 15-20 mm in diam.; pedicel 4-5 mm; ovary ca. 3.5 mm. Sepals not spreading widely, similar, ovate-lanceolate, 7-8 × 2-2.5 mm, 1-veined, apex acute. Petals linear-lanceolate, 6-7 × 1-1.5 mm, 1-veined, apex acute; lip pendulous or spreading forward, broadly cuneate, 9.5-10 × 5-6.5 mm, with 3 inconspicuous veins, base concave and slightly channeled, margin recurved, apex truncate and shallowly notched or emarginate. Column ca. 3 mm; anther erect, narrow, ca. 1 mm. Capsule obovoid, ca. 8 × 4 mm, with 3 conspicuous ridges. Fl. Jun-Jul.
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