Talinum caffrum (Thunb.) Eckl. & Zeyh.

caffrum: from Kaffraria, or S Africa

Erect or suberect perennial herb, up to 40 cm tall, growing from a swollen tuber-like root. Leaves and stems somewhat fleshy. Leaves elliptic-lanceolate, up to 6 × 1.5 cm; margin sometimes rolled under. Flowers axillary, mostly solitary, rarely in clusters of 2-3, yellow,up to 2 cm in diameter, opening in the afternoon and fading by nightfall. Fruit a subglobose capsule. Seeds c. 20, shiny black with a white hilum, 1.5-2 mm in diameter, with raised concentric ridges on the surface (visible with a lens).

From Ethiopia, Sudan to Angola, Namibia and South Africa