Are Berkheya and Valeriana both endemic to Africa?
Berkheya Berkheya is a genus of flowering plants in the aster family, Asteraceae, and the subfamily Carduoideae, the thistles. It is distributed in tropical Africa, especially in southern regions. Of about 75 species, 71 can be found in South Africa.
Gorteria diffusa Gorteria diffusa is a species of flowering plant in the daisy family. It is native to southern Africa, particularly South Africa. It is notable that the plant exhibits fourteen different phenotypes. It also exhibits sexual mimicry.