Plants often slender, 18-45 cm tall. Tubers palmately 3-or 4-lobed. Stem erect, stout, nearly solid, with 2 or 3 tubular sheaths at base, 5-or 6-leaved. Leaves usually widely spaced, green, with large purple blotches adaxially, narrowly obovate, oblong-obovate, or oblong-lanceolate, 4-12 × 1.5-2.5(-4) cm, apex subobtuse or acuminate. Rachis 3-6(-10) cm, densely many flowered; floral bracts linear-lanceolate, shorter than flowers, apex acuminate. Flowers pale to deep pink, medium-sized; ovary and pedicel 9-10 mm. Sepals pale to deep pink, lanceolate to broadly lanceolate, apex slightly obtuse; dorsal sepal erect, 6-9 × ca. 2 mm, 3-veined; lateral sepals with dark spots on veins, oblique, 7-8 × ca. 2.5 mm, 3-veined. Petals erect, forming a hood with dorsal sepal, pink, sublanceolate, 6-9 × ca. 2 mm, 3-veined, apex subacute; lip pink with deep purple spots that sometimes form thick stripes along adaxial veins, orbicular-rhombic, 7-8(-9) × 8-10 mm, deeply 3-lobed at or above middle; mid-lobe oblong-ovate to ovate-triangular, 3-4 × 1.5-2.5 mm, apex obtuse or acute; lateral lobes rhombic to broadly triangular, broader than mid-lobe, margin crenate or obtusely toothed; spur pendulous, straight, cylindric, 6-8 mm, slightly shorter than ovary, 1-1.5 mm in diam., apex obtuse. Fl. Jun-Jul. 2n = 40.
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