Perennial herbs. Corms with papery or fibrous tunics. Stem simple or branched. Leaves mostly basal, distichous, linear, lanceolate or thread like, usually with a false midrib. Inflorescence a spike or panicle of spikes; spike with 2-many flowers, 2-ranked or spirally arranged. Bracts longer than ovaries. Perianth gamophyllous, infundibuliform or salver-shaped, lobes ( equal. Stamens 3, attached to the throat of the hypanthial tube or within it. Filaments free or connate at the base. Ovary bilocular, axile placentation; style thread-like, longer than stamens, stigma 3-fid. Fruit a membranous 3-valved capsule. Seeds angular.