Small to medium sized, herbaceous geophytes, with annual aerial parts. Perennating organ a single to multiple globose or irregularly-shaped hypocotyledonary tuber sometimes with a proliferation of rhizomes or stolons; internally white, yellow, pink or purplish-red, with one or more apical or lateral to basal growing points, each protected by a neck of sheathing fibrous remains of leaf bases. Leaves 1 to several, synanthous or hysteranthous, erect or prostrate, glabrous or pubescent, with a distinct petiole-like base; lamina linear to lanceolate, ovate or orbicular, with complex appendages or enations sometimes produced from the upper surface. Peduncle erect, straight or sometimes flexuose, unbranched, terete, naked. Inflorescence a simple raceme, few to many-flowered, cylindrical to corymbose, dense or lax, upper flowers sometimes sterile or aborted. Bracts minute, solitary, basal, subtending a single flower. Pedicels short or long, articulated at the apex. Flowers small, actinomorphic, diurnal; triangular, rotate, campanulate or recurved, 6-14 mm diameter. Tepals 3+3, dimorphic with outer spreading and inner erect, or all equal to subequal, connate at the base only, uninerved, persistent, white, pink, yellow or green. Stamens 6, hypogynous, adnate to base of tepals; filaments filiform to broadly lanceolate, white, yellow, orange or purple blotched; anthers peltate, dorsifixed, versatile, sub-globose to oval, introrse. Ovary superior, sessile, 3-locular, each with 2-6 axile ovules; style terete; stigma apical, small. Capsule turbinate to ovoid, emarginate, dehiscent, loculicidally 3-valved, valves persistent. Seeds 6-12, oval to comma-shaped; testa fawn, densely covered with unicellular hairs up to 8 mm long, white, turning brown with age.