Published in Journal of South African botany, in 1960, in volume 26, pages 1-8

Published in Journal of South African botany, in 1960, in volume 26, pages 9-15

Published in Journal of South African botany, in 1960, in volume 26, pages 17-35

Published in Journal of South African botany, in 1960, in volume 26, pages 37-44

Published in Journal of South African botany, in 1960, in volume 26, pages 45-49

Published in Journal of South African botany, in 1960, in volume 26, pages 51-72

Published in Journal of South African botany, in 1960, in volume 26, pages 73-74

Published in Journal of South African botany, in 1960, in volume 26, pages 75-79

Published in Journal of South African botany, in 1960, in volume 26, pages 93-137

Published in Journal of South African botany, in 1960, in volume 26, pages 139-148

Published in Journal of South African botany, in 1960, in volume 26, pages 149-153

Published in Journal of South African botany, in 1960, in volume 26, pages 155-164

Published in Journal of South African botany, in 1960, in volume 26, pages 165-166

Published in Journal of South African botany, in 1960, in volume 26, pages 167-319

Published in Journal of South African botany, in 1960, in volume 27, pages 87-97