Subscapose herbs from a relatively short vertical rhizome producing numerous fleshy roots; leaves chiefly in a basal rosette, those of the flowering stem remote and greatly reduced, narrowly lanceolate to linear, parallel-veined; inflorescence terminating the flowering scape, simply racemose or occasionally branched at the base; flowers solitary or in pairs or small fascicles in the axils of scarious or slightly foliaceous bracts; perianth segments 6, free and essentially equal, 3-to 7-nerved; stamens 6, hypogynous, the anthers free at anthesis, sagittate; pistil 3-celled, the style simple, the stigma subcapitate; fruit a 3-to several-seeded capsule.