Published in Journal of South African Botany, in 1940, in volume 6, pages 11-19
Published in Journal of South African Botany, in 1940, in volume 6, pages 21-30
Published in Journal of South African Botany, in 1940, in volume 6, pages 31-32
Published in Journal of South African Botany, in 1940, in volume 6, pages 49-54
Published in Journal of South African Botany, in 1940, in volume 6, pages 55-69
Published in Journal of South African Botany, in 1940, in volume 6, pages 71-72
Published in Journal of South African Botany, in 1940, in volume 6, pages 79-110
Published in Journal of South African Botany, in 1940, in volume 6, pages 111-116
Published in Journal of South African Botany, in 1940, in volume 6, pages 117-119
Published in Journal of South African Botany, in 1940, in volume 6, pages 33-40
Published in Journal of South African Botany, in 1940, in volume 6, pages 41-43
Published in Journal of South African Botany, in 1940, in volume 6, pages 1-10
Published in Journal of South African Botany, in 1940, in volume 6, pages 73-78
Published in Journal of South African Botany, in 1940, in volume 6, pages 45-47
Published in Journal of South African Botany, in 1940, in volume 6, pages 147-164
Published in Journal of South African Botany, in 1940, in volume 6, pages 165-175
Published in Journal of South African Botany, in 1940, in volume 6, pages 177-190
Published in Journal of South African Botany, in 1940, in volume 6, pages 121-125
Published in Journal of South African Botany, in 1940, in volume 6, pages 127-130
Published in Journal of South African Botany, in 1940, in volume 6, pages 131-145
Published in Journal of South African Botany, in 1940, in volume 6, pages 191-194
Published in Journal of South African Botany, in 1940, in volume 6, pages 195-204