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.
Cerbera Cerbera is a genus of evergreen small trees or shrubs, native to tropical Asia, Australia, Madagascar,and various islands in the Indian Ocean and the western Pacific Ocean.