1. H. M. Burkill, The Useful Plants of West Tropical Africa, 2nd Edition, Vol. 1, Families A–D, Royal Botanic Gardens, Kew, Richmond, United Kingdom, 1985, 960 pp.
2. J. M. Dalziel, The Useful Plants of West Tropical Africa, Crown Agents for Overseas Governments and Administrations, London, United Kingdom, 1937, 612 pp.
3. J. D. Olowokudejo, A. B. Kadiri, and V. A. Travil, Ethnobot. Leaflets, 12, 851 (2008).
4. A. J. M. Leeuwenberg and Alafia Thouars, Kew Bull., 52 (4), 769 (1997).
5. A. A. Adekunle and S. O. Okoli, Hamdard Medicus, 45 (3), 52 (2002).