Published in Journal of South African Botany, in 1939, in volume 5, pages 1-27
Published in Journal of South African Botany, in 1939, in volume 5, pages 29-31
Published in Journal of South African Botany, in 1939, in volume 5, pages 33-34
Published in Journal of South African Botany, in 1939, in volume 5, pages 35-39
Published in Journal of South African Botany, in 1939, in volume 5, pages 41-44
Published in Journal of South African Botany, in 1939, in volume 5, pages 45-46
Published in Journal of South African Botany, in 1939, in volume 5, pages 47-52
Published in Journal of South African Botany, in 1939, in volume 5, pages 53-58
Published in Journal of South African Botany, in 1939, in volume 5, pages 59
Published in Journal of South African Botany, in 1939, in volume 5, pages 61-73
Published in Journal of South African Botany, in 1939, in volume 5, pages 75-79
Published in Journal of South African Botany, in 1939, in volume 5, pages 81-86
Published in Journal of South African Botany, in 1939, in volume 5, pages 87-104
Published in Journal of South African Botany, in 1939, in volume 5, pages 105-155
Published in Journal of South African Botany, in 1939, in volume 5, pages 157-161