Stemless, coarse, evergreen, drought-hardy perennials, strongly rhizomatous and forming colonies. Rhizome cylindric, thick and fibrous. Leaves sessile, arranged in a rosette or distichously. Inflorescence a dense, cylindric raceme. Flowers numerous, subsessile, in irregular clusters along the scape, nocturnal, delicately scented. Perianth with a long narrow tube, bulbous at base, with 6 spreading to recurved lobes. Fruit a berry. Seeds 1-3, bony.