1. School of Pharmacy, Tshwane University of Technology, Private Bag X680, Pretoria, 0001, South Africa
2. Department of Pharmacy and Pharmacology, University of the Witwatersrand, Johannesburg, 2193, South Africa
3. Department of Pharmacognosy, Faculty of Pharmacy, Anadolu University, Eskişehir, 26470, Turkey
4. Bolus Herbarium, Botany Department, University of Cape Town, Rondebosch, 7701, South Africa