Plants 20-30 cm tall. Rhizome short, 3-5 mm in diam. Stem flexuous, glabrous, with 3 or 4 sheaths toward base. Leaves 2 or 3, ovate-lanceolate to lanceolate, lowest one elliptic or ovate, 2-7 × 1-4 cm, finely papillose along margins, base amplexicaul, apex acute. Rachis ca. 4 cm, glabrous or puberulent, laxly 1-4-flowered; floral bracts narrowly ovate, 3-4 × 2-3 mm, shorter than ovary, apex acute. Flowers not resupinate, rose-pink, lip with a yellow callus on epichile and brown warts on hypochile; pedicel and ovary ca. 10 mm, puberulent. Sepals ovate, ca. 10 × 5-5.5 mm, apex acute; lateral sepals oblique, slightly wider than dorsal sepal. Petals ovate, ca. 8.5 × 5 mm, apex shortly acuminate; lip ca. 12 mm, with a mesochile connecting hypochile and epichile; hypochile cymbiform, with broadly triangular, rounded side lobes ca. 4 mm, with numerous brown warts; mesochile oblong, ca. 3.5 × 2 mm, with a pair of fleshy low keels; epichile suborbicular, ca. 3.5 mm, with a small callus at base, margin undulate, apex obtuse. Column ca. 7 mm. Fl. Jul-Aug. 2n = 40, 60.
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