Diagnostics, taxonomy, nomenclature and distribution of perennial (Aizoaceae) in Africa.

The taxonomy of perennial species in Africa has been poorly investigated until now. Previously five perennial species of were recognised in Africa (, , , and ). Based on the differing number of stamens, is accepted here as being distinct from .

Out of southern Africa: Origin, biogeography and age of the Aizooideae (Aizoaceae).

The Aizooideae is an early-diverging lineage within the Aizoaceae. It is most diverse in southern Africa, but also has endemic species in Australasia, Eurasia and South America. We derived a phylogenetic hypothesis from Bayesian and Maximum Likelihood analyses of plastid DNA-sequences.

A phylogenetic hypothesis for the recently diversified Ruschieae (Aizoaceae) in southern Africa.

The Ruschieae is a large tribe of about 1600 species of succulent perennials. They form a major component of the arid parts of the Greater Cape Floristic Region, both in numbers of species and in their density of coverage. So far phylogenetic relationships within the tribe have been unresolved, largely through the paucity of variable molecular characters and this is ascribed to the tribe's recent and rapid radiation.