Taxonomic information is provided for 69 exotic succulent plant species that have become naturalised or invasive - or may potentially do so - in South Africa and some of its neighbouring countries. Informative descriptive text and illustrations are provided for all the species, as well as synonymies and geographical distribution maps. Ancillary chapters cover brief introductions to the ecological impacts of invasiveness, a history of invasive succulents in South Africa, the means of introduction and reasons for their success, legislation governing invasive species in South Africa, and how to collect succulents for deposition in an herbarium. However, emphasis throughout is on the taxonomy of these species.

Keywords: alien species, early detection, eradication, invaders, naturalised, southern Africa, succulent plants.