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Postgraduate:Taxonomy, systematics and chemosystematics of African plant families
Medicinal plant chemistry and ethnobotany
1.Taxonomy, systematics and chemosystematics of African plant families, mainly Apiaceae (Umbelliferae), Fabaceae (African genistoid legumes) and Asphodelaceae (Aloe and related genera).
2.Medicinal plants and ethnobotany, including Khoi-San and Cape Dutch ethnobotany, quality control, product and crop development.
1. Chairman of the
Aloe Council of South Africa (Pty) Ltd.
2. Chairman of the
Indigenous Plant Use Forum
3. Member of the
Association for African Medicinal Plant Standards (AAMPS)
4. Member of
Briza Publications CC
5. Member of the Presidential Task Team on African Traditional Medicine
6. Commercialisation of indigenous African plants
7. Book author