Klak, Cornelia ， V. Bruyns, Peter
2026-05-01 SOUTH AFRICAN JOURNAL OF BOTANY 2026 192(卷), null(期), (729-736页)
Study of type material shows that Aizoanthemum galenioides, described as Aizoon galenioides, is a synonym of Aizoon papulosum. We provide the new name Aizoanthemum galeniflorum for the plants usually known as Aizoanthemum galenioides. We describe a new species, Aizoanthemum hispidifolium, from around Cape Cross in Namibia. Aizoanthemum hispidifolium shares with A. galeniflorum the small yellow flowers but differs from it by the white hair-like papillae and a prostrate habit. We map the distributions for all five species of Aizoanthemum: A. dinteri is the most widespread and occurs from the Mossamedes district in southern Angola to the Rostock district in Namibia, with most collections made at altitudes above 500 m; A. hispidifolium, A. galeniflorum and A. mossamedense are confined to the hyper-arid coastal strip between Mossamedes (Angola) and Walvis Bay (Namibia), at altitudes below 200 m. We revise the description of Aizoanthemum and provide an updated key to the species.