Herbs with bulbs. Leaves linear, flat or terete, mostly basal. Flowers in cymose umbels or solitary surrounded by a spathe or spathes, regular, bisexual. Perianth segments 6, in 2 whorls, free or connate. Stamens 6, adnate to the perianth. Ovary 3-locular, inferior; placentas axile. Fruit a capsule. c. 59 gen., trop., mostly cool to warm temp.