Herbs, epiphytic. Pseudobulb green, turbinate to pyriform, 1-3 × 1-1.5 cm, usually with a short, indistinct neck, often enclosed in persistent, smooth sheaths, 2-leaved. Leaves elliptic-lanceolate to oblanceolate, 10-20 × 1.5-3.5 cm, papery, apex acute. Inflorescence appearing after leaves have fallen, erect; peduncle completely enclosed in several membranous sheaths, 5-6 cm; floral bract cucullate, broadly obovate or suborbicular when flattened, 17-30 mm, exceeding ovary, apex obtuse. Flower solitary, suberect or spreading horizontally, fragrant, white or occasionally tinged purplish red, lip with a yellow center and purple blotches on apical margin. Dorsal sepal oblong-lanceolate, 30-40 × 7-9 mm, apex obtuse; lateral sepals broadly lanceolate, falcate, slightly oblique, 30-40 × 8-10 mm, apex acute. Petals oblanceolate, ± falcate, 30-42 × 7-8 mm, apex acute; lip ovate-oblong, 25-35 × 20-25 mm, conspicuously 3-lobed at or below middle; lateral lobes small; mid-lobe 10-13 mm, margin erose, apex emarginate; disk with 5-7 papillate-toothed lamellae; central 2 or 3 lamellae arising at base of lip, all extending almost to apex of lip. Column ± arcuate, 17-20 mm, apex irregularly erose-toothed. Fl. Oct-Nov. 2n = 40.
