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Bulb often fibrous at the top. Plants ± robust and flowering with the leaves. Leaves linear to lanceolate, glabrous, usually uniformly green. Scape erect, usually single, glabrous or pubescent. Inflorescence a raceme; pedicels smooth or pubescent, spreading in flower, erect in fruit. Flowers white to blue. Perianth-segments free or united at the base, often with a coloured midrib. Filaments flattened and often united with each other at the base. Ovary sessile or with a short carpophore with 2 or more ovules per locule. Seeds black and flattened to turgid.
Bulbous perennial herbs. Roots fibrous. Leaves several, basal, linear, channelled, annual. Scape simple, solid. Flowers bisexual, actinomorphic, many in a raceme which is sometimes corymb-like, each pedicel subtended by a bract. Sepals and petals each 3, free, flat, equal, blue to violet. Stamens 6, free, inserted at base of perianth; anthers dehiscing by slits, introrse. Ovary superior, 3-locular; ovules 1-10 per locule; placentation axile; style filiform, simple; stigma small. Fruit a capsule. Seeds several, angular or globose.
Clump-forming perennials. Bulb tunicate. Leaves all basal, variable liner to ± ovate. Flowers blue, rose or white, in few-to many-flowered terminal erect racemes; ebracteate, or with 1 bract, or with bract and bracteole; segments free or ± connate at base, spreading or ± campanulate, midnerve prominent or obscure. Capsule globose, loculicidal. Seeds Sub-globose, black. spp. c. 80, of temperate Eurasia, tropical and S. Africa. Adventive spp. 2.
