Bibliography for Tropical Africa :
- Exell, A. & Wild, H. (1963). Flora Zambesiaca: Mozambique, Federation of Rhodesia and Nyasaland, Bechuanaland Protectorate. London Kew 2(1):
Bibliography other :
- Fl. Trop. E. Africa Zygophyl.: 1-14 (1985)
- Fl. Ethiopia & Eritrea 2(1): 355 (2001)
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