Perennial, corm-bearing herb up to 45 cm tall. Corm subglobose, about 2 cm across enclosed by fibrous, coarsely reticulate tuniabout Leaves basal, usually 2, narrow-linear, chanelled, arcuate, usually longer than the inflorescence. Stem simple or sparsely branched, each terminating in 2-4-flowered inflorescence and more or less enclosed by bracts. Bracts and bracteoles thin, membranous. Flowers blue to violet. Outer perianth, the falls, broader, dark-spotted, with a central, white or yellowish signal patch; inner perianth narrower, erect or recurved-spreading. Capsule cylindrical to ellipsoid, long-beaked.