Plants 14-28 cm tall. Pseudobulbs tuberous, ovoid, borne on a short rhizome and sometimes forming clusters, 1.5-2.5 cm in diam., few noded, usually partially covered in fibrous sheaths. Leaves 2 or 3, well developed at anthesis, elliptic-oblong to elliptic, (10-)13-21(-31) × (3-)5-7(-11) cm, apex acute or shortly acuminate; petiole-like stalk enclosed in several sheaths and forming a pseudostem 8-18 cm. 

Inflorescence (8-)15-18 cm, much shorter than leaves; peduncle with 2 or 3 tubular, membranous sheaths; rachis pendulous, 3-4 cm, densely 10- or more flowered; floral bracts linear-lanceolate, 6-12 mm, membranous, apex acute. Flowers not opening widely, white, lip with purplish streaks and a yellowish callus at center; pedicel and ovary 5-6 mm. Sepals narrowly oblong, 10-12 × 2-2.5 mm, apex acuminate; lateral sepals slightly wider than dorsal sepal. Petals obovate-oblong, 9-11 × ca. 3.5 mm, apex obtuse or acute; lip broadly oblong-ovate, ca. 8 × 5 mm, shallowly concave at base, unlobed, lateral margins erect, apical margins slightly crisped, apex obtuse and usually slightly emarginate; disk with a central callus composed of 2 or 3 fleshy, crestlike longitudinal ridges extending from midway along lip almost to apex. Column 3-3.5 mm, with a short column foot. Fl. Apr-Jun.