Tylecodon cacalioides flower

The bright sulphur-yellow and bisexual flower of Tylecodon cacalioides, sometimes commonly called sulphur butterbush, have five short, finely hairy sepal lobes. These are short and acutely pointed at the base of the flower. The calyx is persistent at the back of the fruit after flowering.

The corolla is tubular or deeply bell-shaped. Its petals are fused in the tube part of the corolla that is 2,5 cm long. Their five recurving lobes open to 2 cm in diameter, the tube longer than the lobes. The lobe margins in the photo are finely frayed to fringed.

The ten stamens grow in two whorls from low down on the inside the corolla tube wall (Vlok and Schutte-Vlok, 2015; Leistner, (Ed.), 2000; iNaturalist).