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DescriptionPerennial herbs. Roots fibrous, sometimes bearing tubers. Leaves rosulate with tubular bases which often persist as a sheath of fibres; lamina flat or subterete, narrow. Inflorescence an axillary, simple or compound raceme. Pedicels not articulated. Perianth rotate, white or occasionally dull yellowish, with 1 dark central vein. Filaments retrorsely scabrid. Ovary sessile. Capsule spherical to oblong.