Herbs, terrestrial or lithophytic, with somewhat dilated base ± enclosed by white membranous sheaths. Leaves 2, ovate-oblong, ca. 13 × 6 cm, membranous or herbaceous, obtuse. Inflorescence 15-18 cm; rachis many flowered; floral bracts ovate, ca. 2 mm, apex acute. Pedicel and ovary ca. 1 cm. Dorsal sepal oblong-lanceolate, 9-10 × 2-2.5 mm, 3-veined, apex acute; lateral sepals obliquely oblong-lanceolate, to 9.5 × 2.5 mm, 3-veined, apex subacute. Petals linear, ca. 8.5 × 0.5-1 mm, 1-veined; lip suborbicular-obovate, 9.5-10 × ca. 8.5 mm, basal callus erect and bilobed, margin shallowly dentate, apex broadly apiculate. Column arcuate, clavate, 3.5-4 mm. Fl. Oct. 2n = 20*.