Notes on the Delosperma-clade (Aizoaceae). Delosperma

47 accessions of the Delosperma-clade are analyzed using ITS and four chloroplast markers. All accessions are retrieved in a single, unsupported clade together with two samples of Odontophorus marlothii and all Delosperma accessions except for three aberrant species are retrieved in a well supported clade together with all the smaller genera of the Delosperma-clade except for Frithia. Consequently, Corpuscularia and Ectotropis are subsumed under Delosperma. The East African-Arabian Delosperma species are monophyletic if D. alpina from the Drakensberg is included; but they are not monophyletic with the species from Madagascar and Réunion. The species of the Central Plateau of southern Africa are also monophyletic and sister to the East African-Arabian species. Two new species, Delosperma heidihartmanniae and D. melepoense, are described in the East African-Arabian clade.