Education
Doctor of Philosophy, University Natal, Pietermaritzburg, 1974.
Doctor of Philosophy, University Natal, Pietermaritzburg, 1974.
Senior lecturer University Fort Hare, Alice, 1975—1977, associate professor, 1978—1980, professor, chair, 1980—1989, Rhodes University, Grahamstown, South Africa, 1989—1995, senior professor, professor, chair South Africa, since 1995.
Member of SA Association Botanist (past president).