Two species within this genus are found in South Africa. Some consider this not to be a carnivorous plant as no digestive enzymes are produced. Instead, the plants rely on a mutualistic relationship with the bug Pameridea roridulae, which feed on insects trapped on the resinous leaves and then defecate "digested insects" on the plants, providing nutrients for them.
Bodri MS and M Opel. 2008. In vitro propagation of Roridula gorgonias (Roridulaceae). Carnivorous Plant Newsletter. 37:86-88.