Plants 30-45 cm tall. Rhizome usually inconspicuous. Pseudobulbs conic, short, ca. 2 cm in diam., with 3 or 4 sheaths. Leaves 3 or 4, not well developed at anthesis, not deciduous; blade elliptic or obovate-lanceolate, 18-30 × 5-11.5 cm, apex acute; petiole-like base sheathing, 3-10 cm, usually forming a stout pseudostem 5-8 cm long and 1-2 cm in diam. Scape arising from leaf axil, 25-40 cm, densely puberulent; rachis to 30 cm, laxly 5-13-flowered; floral bracts persistent, lanceolate, 5-13 mm, nearly glabrous. Flowers yellowish green, with pinkish red striations; pedicel and ovary 16-23 mm, puberulent. Sepals similar, oblong, 12-23 × (3-)4-6(-8) mm, abaxially puberulent, 5-veined, apex acute. Petals oblong-lanceolate, 11-20 × 4-5 mm, glabrous, 3-veined, apex acute; lip adnate to base of column wings, 11-20 × 6-10 mm, base shortly clawed, 3-lobed; lateral lobes falcate-oblong, ca. 15 × 12.5 mm, apex obliquely truncate; mid-lobe nearly reniform or orbicular, ca. 6 × 8 mm, base clawed, apex usually emarginate and mucronate in sinus; disk pinkish red, with 3 tall yellow lamellae; spur very short, ca. 2 mm, outside puberulent, attenuate toward apex. Column ca. 4 mm, slightly dilated toward apex, ventrally villous; rostellum 2-lobed; lobes ca. 1 mm; anther cap beaked; pollinia narrowly obovoid, subequal in size, ca. 1.5 mm. Fl. May-Jun. 2n = 38, 40, 48.
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