Crassothonna capensis is a spreading succulent with yellow flowers. It was moved from the Othonna genus to Crassothonna in 2012.
The flower in the photo found in Kirstenbosch during November has about a dozen petals and a yellow centre. The plant branches freely and has cylindrical succulent grey leaves.
The habitat is dry rocky flats in the Little Karoo and also not very far from the coast in the Eastern Cape to about Uitenhage (www.finegardening.com; Bond and Goldblatt, 1984).