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.
Alchornea floribunda Alchornea floribunda is a plant native to Sudan, Uganda, Cameroon, Central African Republic, the Republic of Congo, Equatorial Guinea (incl. Bioko), Gabon, São Tomé and Príncipe, the Democratic Republic of Congo, Côte d'Ivoire, Ghana, Guinea, Liberia, Nigeria and Sierra Leone. The plant is locally known as "Niando".