Professor and Head of Dept. Plant & Soil Sciences, University of Pretoria.
Molecular systematist, biodiversity scientist. Worked on grasses, daisies, legumes and Proteaceae. Also an interest in African orphan crops.
Favorite collecting places: Southern Angola, Lesotho, Southern Escarpment, the Waterberg (Limpopo province) and Mamelodi Ridge (part of Magaliesberg)