Plants autotrophic, 15-40 cm tall. Pseudobulb subterranean, white, ovoid, ca. 3 × 2.2-2.5 cm, often borne in clusters and connected to each other by short rhizomes. Leaves 2 or 3, emerging after anthesis, linear, 10-25 × 3-5 cm, apex acute to acuminate. Inflorescence dark green to purplish, racemose, 15-40 cm, stout, with several purplish sheaths below middle; rachis 4-15 cm, laxly 3-to more than 10-flowered; floral bracts narrowly ovate-lanceolate, 5-11 mm, shorter than ovary, apex acuminate. Flowers nodding, medium-sized, ca. 30 mm in diam.; sepals and petals pale purple, white tinged pink, or occasionally pale green, lip pinkish white or green with purple venation; pedicel and ovary 10-20 mm. Sepals similar, linear, 10-13 × ca. 2 mm, apex acute. Petals similar to sepals but slightly shorter, 9-12 × ca. 2 mm, apex acute; lip suboblong-elliptic, 10-12 × ca. 6.5 mm, spurred at base, 3-lobed above middle; lateral lobes erect and loosely embracing column, triangular-ovate, apex acute; mid-lobe orbicular to subquadrate, ca. 3 × 4 mm, apical margin crisped, apex truncate; disk papillose, with 3 longitudinal ridges; ridges white tinged purple, slightly crested; spur projecting backward or slightly hooked, cylindric, 4-5 mm, apex acute. Column white, tinged pale greenish brown, ca. 6.5 mm, slender, with a short column foot ca. 1 mm. Fl. Feb-Apr. 2n = 54, 56.
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