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

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 163-164

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 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 1-27

Published in Journal of South African Botany, in 1939, in volume 5, pages 29-31