Clump-forming perennials; bulb tunicate. Leaves all basal, linear to lorate. Scapes hollow. Flowers solitary to several, white, yellow, or rarely green, erect or drooping, umbellate; perianth-lobes ascending, reflexed or spreading, connate below; tube narrow-cylindric to trumpet-shaped with tubular trumpet-like or cup-shaped corona at throat, sometimes reduced to a rim; spathe 1-valved. Stamens equal or unequal, attached to perianth-tube at two levels, included or exserted from tube but not extending beyond corona. Capsule ovoid to globular with 3 rounded angles, loculicidal. Seeds many, subglobose, angled, black. Spp. c. 60, of Europe and W. Asia. Adventive spp. 5.