Q: Carnivorous plants of southern Africa--Roridula homeland!
A: South Africa, Lesotho, and Swaziland are discussed here. All other
parts of Africa, including Madagascar and the Seychelles, are simply indicated as "northern Africa."
Before we get to the large genera
for South Africa, I note that Genlisea hispidula (and others?) occurs in the region. Also, the genus
Roridula is endemic here.
Drosera
This is a big pile of species. Mostly a bunch of rosetted species, identifying them can be extremely difficult.
Utricularia
Africa has a good number--about twenty--species in this genus.
Page citations: Fleischmann, A. 2012; Gibson 2008; Rice, B.A. 2006a; Robinson, A., et al. 2017; Schlauer, J. 2002; Taylor, P. 1989.