Bulb elongated, deep-seated. Foliage leaf at vegetative stage single; 2 at flowering stage, apparently opposite on the middle of aerial stem, more or less net-veined. Flowers nodding, usually solitary, rarely 2-5 in a raceme, usually ebracteate. Tepals spreading infundibuliform at anthesis, eventually reflexed, white, yellow, pink, or violet, caducous. Perigonal nectary present, often auricle-shaped on the tepal base. Stamens ofboth whorls different in length. Filaments often filiform, sometimes thickened in middle or basal part. Anthers linear to ellipsoid. Style distinct, more or less trifid. Capsule ellipsoid to subglobose, 3-angled. Seeds ellipsoidal or sharp-angled, with a chalazal elaiosome (except E. grandiflorum Pursh). Embryo minute.