1925
South African botanist
Bibliografía (14 obras)
Trees Shrubs Natal Drake (Ukhahlamba series)
2005
The tribe Selagineae (Scrophulariaceae)
1999
Trees Shrubs Natal (Ukhahlamba)
1997
Grass and Sedges
Flowers of the Natal Drakensbrg
The Manuleae
1994
Dierama
1991
Flowers of the Natal Drakensberg
1990
The botany of the southern Natal Drakensberg
1987
Grasses, sedges, restiads & rushes of the Natal Drakensberg
Trees & shrubs of the Natal Drakensberg
1985
Flora of Southern Africa Series (Flora of Southern Africa)
1983
Compositae in Natal
1977
Streptocarpus: an African plant study
1971
