Small herb, stems brown, erect or twining, up to 1 m x ± 1 mm, sap milky, from underground tuber. Leaves nearly sessile, linear to narrowly elliptic, 25-65 x 1.5-2 mm, dark grey-green, pubescent, margins recurved. Flowers 1-6, in several sessile clusters, on young growth. Corolla 8-27 mm diam., lobes linear, 4-12 x 1-2 mm, brown to green, sparsely pilose. Corona white, slightly exceeding corolla tube, tubular, with numerous fine processes around mouth, in several series. Anthers with swollen, white, apical appendages reaching to mouth of corona tube and blocking it.
Perennial herb, tuber irregular to turnip-shaped. Stems pubescent, becoming woody, 100300 mm high. Leaves almost sessile; blade linear-subulate, 20-30 x 1-2 mm, margins revolute, pubescent. Flowers: inflorescence sessile, 2-6-flowered; corona white, tube 4-6 mm; corolla lobes 5-10 mm long, pubescent outside, mainly glabrous inside, yellow to green to brown; Aug.-Apr. Fruit a follicle.
Slender geophyte or climber to 30 cm, stems ± 1 mm diam.; sap milky. Leaves opposite, linear, purplish to dark grey-green, margins recurved. Flowers as in F. capensis.
A herb. It has a tuber and keeps growing from year to year. The stem are hairy and 10-30 cm tall. The leaves are opposite and narrow. The edges curve back.