Namibia, Gariep Centre, Aridity, Succulent Karoo, Succulent plants, Plant diversity, Namib Desert, and Southern Africa

Greater Cape Floristic Region, Aizoaceae, Southern Africa, Aridification, Diversification rates, Ruschioideae, and Succulent Karoo

Monophyly, Phylogenetic signal, Stone plant, Greater Cape Floristic Region, Floral diversity, Conophytum, Pollination, and Succulent Karoo