Published in Journal of South African botany, in 1956, in volume 22, pages 41-63
Published in Journal of South African botany, in 1956, in volume 22, pages 5-22
Published in Journal of South African botany, in 1956, in volume 22, pages 23-31
Published in Journal of South African botany, in 1956, in volume 22, pages 65-77
Published in JOURNAL OF SOUTH AFRICAN BOTANY, in 1956, in volume 22, pages 37-39
Published in JOURNAL OF SOUTH AFRICAN BOTANY, in 1956, in volume 22, pages 1-4
Published in Journal of South African botany, in 1956, in volume 22, pages 33-35
Published in Journal of South African botany, in 1956, in volume 22, pages 151-159
Published in Journal of South African botany, in 1956, in volume 22, pages 161-193
Published in JOURNAL OF SOUTH AFRICAN BOTANY, in 1956, in volume 22, pages 87-127
Published in Journal of South African botany, in 1956, in volume 22, pages 135-144
Published in JOURNAL OF SOUTH AFRICAN BOTANY, in 1956, in volume 22, pages 147-149
Published in Journal of South African botany, in 1956, in volume 22, pages 85-86
Published in Journal of South African botany, in 1956, in volume 22, pages 79-83