Erect perennial herbs. Roots wiry or fusiform. Leaves subterete or flattened, glabrous or ciliate on the margins, ± fleshy. Inflorescence a [?simple], many-flowered raceme. Bracts membranous, persistent. Pedicels not articulated. Flowers bright yellow. Perianth segments free, all 1-nerved. Filaments densely long-hairy. Ovary sessile. Capsule subspherical to oblong-ovoid. Seeds (in ours) pyramidal, sharply 3-angled, sometimes winged.