Overview
Caespitose epiphytes. Pseudobulbs suborbicular, strongly compressed, wrinkled with age. Leaves 1, marbled, shortly petiolate. Inflorescences with elongate scapes, the apex a congested raceme with succesive flowers produced sequentially over great time. Flowers very showy. Sepals strongly dimorphic, the dorsal sepal and petals erect, subsimilar, subparallel, linear, the lateral sepals divergent, broad, falcate, with undulate margins. Lip three-lobed, the midlobe very large, clawed, with undulate margins, the callus basal. Column winged, with variable ornamentation; pollinia 2, on a common stipe and viscidium.