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.
Nevillea Nevillea is a group of plants in the Restionaceae described as a genus in 1984. The entire genus is endemic to Cape Province in South Africa.