Plants ca. 25 cm tall. Pseudobulbs very small, ca. 7 mm in diam., with 2 sheaths. Leaves 3 or 4, basal, well developed at anthesis, not deciduous; blade elliptic or oblong, 8-11 × 2.5-3.5 cm, apex shortly acuminate; petiole-like base ca. 1 cm, usually forming a pseudostem ca. 3 cm. Scape arising from leaf axil, ca. 24 cm, puberulent, usually with 2 tubular sheaths; rachis ca. 4 cm, laxly few flowered; floral bracts persistent, ovate-lanceolate, ca. 10 mm, apex acuminate. Flowers yellowish, with purplish red striations; pedicel and ovary ca. 20 mm. Sepals similar, ovate-lanceolate, ca. 17 × 5 mm, 5-veined, apex acuminate; lateral sepals oblique, 3-5-veined. Petals linear, slightly oblique, ca. 13 × 2 mm, 2-or 3-veined, apex acuminate; lip adnate to entire length of column wings, white, ca. 10 × 9 mm, 3-lobed near base; lateral lobes elliptic, slightly oblique, margin slightly dentate, apex obtuse; mid-lobe nearly reniform or transversely oblong, margin undulate, apex subtruncate and emarginate; disk with 7 crested lamellae, central 3 extending to apex of mid-lobe; spur straight, 2-3 mm, outside puberulent, apex obtuse. Column ca. 3 mm; anther cap ± beaked; pollinia obovoid, with very short caudicles; rostellum 2-lobed. Fl. Jul.
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