Deciduous herbs; bulb subterranean, subglobose, tunicated; outer tunics dark brown and leathery; roots several, contractile. Leaves several, contemporary with flowers, suberect, linear and more or less convolute, clasping at base, glabrous, fleshy, uniformly green, margins hyaline. Inflorescence a many-flowered, cylindrical raceme; peduncle erect; bracts small, oblong or lanceolate, not spurred, decurrent; bracteoles lacking; pedicels moderately long, spreading. Flowers bright blue, narrowly campanulate, lightly nodding; tepals fused at base, erect then recurved in the outer third, oblong-lanceolate, persistent; stamens weakly declinate, filaments fused to base of tepals, inserted in one series, fused at base, linear-filiform; anthers versatile; ovary obovoid; ovules 2 or 3 per locule; style terete, weakly declinate; stigma apical, penicillate. Capsule turbinate, 3-lobed, shortly stipitate; seeds ovoid or ellipsoid, black, rugulose, testa tightly adhering.