Aizoaceae

(= Mesembryanthemaceae; vygies)

Worldwide there are about 1854 species in 135 genera in the family Aizoaceae, and most of these species are native to southern Africa (1752 species in 134 genera in southern Africa). The vast majority of species are succulents, falling in the previously recognised family Mesembryanthemaceae and loosely termed mesems. The arid regions of southern Africa have been the centre of speciation for mesems and have given rise to a huge array of forms, including flat disk-like species that look like stones. 

Amaranthaceae (sugarbeet, spinach family)

About 174 genera and 2050 species (cosmopolitan) of which 32 genera and 192 species are native to southern Africa, an additional six genera and 40 species are naturalised, and an additional five genera and 23 species are cultivated in the region.

Basellaceae

Four genera and about 20 species (mainly tropical and subtropical South America but also in Africa and Asia), with two genera and two species naturalised in southern Africa and a further genus and two species that are cultivated in the region.

Cactaceae (cacti)

About 111 genera and 1500 species (mainly arid tropical America but also Old World), with one species (Rhipsalis baccifera) native to southern Africa,  a further seven genera and 15 species that are naturalised, and a further 30 genera and 132 species that are cultivated in the region. Some of the naturalised species are serious plant invaders.

Caryophyllaceae (carnation family)

About 86 genera and 2200 species (cosmopolitan but mainly north temperate regions, especially Mediterranean and Irano-Turanean region), with 12 genera and 47 species native to southern Africa, a further 10 genera and 22 species that are naturalised, and a further three genera and 38 species that are cultivated in the region.

Didiereaceae

Seven genera and about 16 species, native to Africa and Madagascar, with two genera and six species native to southern Africa and an additional two genera and three species that are cultivated in the region.

Droseraceae (sundew and Venus' fly trap family)

Four genera and about 100 species (cosmopolitan), with two genera and 22 species native to southern Africa and a further genus and seven species that are cultivated in the region. Insectivorous.

Drosophyllaceae

One species: Drosophyllum lusitanicum, native from Portugal through to Morocco and cultivated in southern Africa. Previously placed in the Droseraceae. 

Frankeniaceae

Two genera and 81 species (most continents but patchily distributed), with one genus (Frankenia) and three species native to southern Africa.

Limeaceae

Two genera and 23 species (Africa, S Asia and Australia), with one genus and 17 species native to southern Africa. Members of this family were previously placed in the Molluginaceae.

Lophiocarpaceae

Two genera and six species (Africa), with one genus (Corbichonia) and  two species native to southern Africa. Members of this family were previously placed in the Molluginaceae.

Molluginaceae

About 12 genera and 91 species (tropics and subtropics, mainly in southern Africa), with nine genera and 67 species native to southern Africa.

Montiaceae

Claytonia perfoliata is native to western USA and Mexico and is cultivated in southern Africa.

Nepenthaceae (pitcher plants)

One genus, Nepenthes, and about 90 species. Insectivorous plants that are native to Madagascar, SE Asia and northern Australia. There are no native species in southern Africa but 11 species have been recorded as being cultivated in the region.

Nyctaginaceae (Bougainvillea family)

About 30 genera and 395 species (warm regions, mainly Americas), with four genera and 15 species native to southern Africa, an additional genus and five species that are naturalised, and and additional genus and three species that are cultivated in the region.

Phytolaccaceae

Eighteen genera and about 65 species (mainly neotropical, also Old World and temperate regions), with three genera and nine species native to southern Africa, an additional genus and species that is naturalised, and an additional genus and species that is cultivated in the region.

Plumbaginaceae (Plumbago family)

About 27 genera and 836 species (cosmopolitan), of which four genera and 24 species are native to southern Africa and a further two genera and eight species are cultivated in the region.

Polygonaceae (rhubarb family)

About 43 genera and 1110 species, occurring worldwide, with five genera and 29 species native to southern Africa, an additional two genera and 13 species that are naturalised, and an additional seven genera and 11 species that are cultivated in the region.

Portulacaceae

The family in the composition represented here is considered paraphyletic.  Three genera and 33 species are native to southern Africa and a further genus and two species are naturalised in the region. 

Simmondsiaceae

One species: Simmondsia chinensis (Jojoba), which is native to the southern USA and Mexico and is cultivated in southern Africa (Glen 2002).

Talinaceae

Two genera of which one, Talinum, is native to southern Africa. There are about 40 species of Talinum, distributed in Africa and the Americas, with five species native to southern Africa, in summer rainfall areas, and a further species that has become naturalised in the region. 

Tamaricaceae (tamarisks)

Four genera and about 75 species (Old World, mainly Northern Hemisphere). There is one species of Tamarix  that is native to southern Africa, four species that are naturalised, and a further three species that are cultivated in the region.