A tall erect herb, often forming colonies, with a leafy stem that is glandular hairy, 35-85 cm tall, growing from a short stout rhizome. Leaves strongly ribbed and plicate, three to seven, ovate to elliptic-lanceolate, acute to acuminate, 10-24 cm long, 6-15 cm wide, sheathing at the base, with veins and margins strongly hairy. Inflorescence one- or rarely two- to four-flowered; peduncle villose and glandular hairy; bracts leafy, oblong-elliptic to ovate-lanceolate, 6-13 cm long, 2.5-6 cm wide. Flowers large, showy, white with a rose-pink or rarely a white lip, the staminode white with a yellow margin, spotted with red, in the apical half; pedicel and ovary 3-6 cm long, villose and glandular hairy. Dorsal sepal erect or ascending, flat, elliptic to ovate-orbicular, obtuse or rounded at apex, 3-4.5 cm long, 2.5-4.5 cm wide, hairy on both surfaces, ciliate; synsepal entire, concave, ovate-orbicular, obtuse, 3-4.2 cm long, 2-3.7 cm wide, hairy on outer side, ciliate. Petals spreading oblong to elliptic-lanceolate, obtuse or rounded at apex, 2.5-4.7 cm long, 1-1.7 cm wide, pubescent in basal half of inner surface, glandular-ciliate. Lip subglobose, 2.5-5 cm long, 1.5-3.5 cm across, the margins incurved, lorigitudinally shaIlowly furrowed on outer surface. Column 1-1.5 cm long; staminode ovate-trullate, blunt or emarginate, longitudinally concave, 1-1.7 cm long, 0.7-1.4 cm wide; anther filaments blunt, broad, and rounded at apex.