The annals of the Bolus Herbarium ... - Bolus Herbarium. (1918)

The ferns of South Africa, containing descriptions and figures of the ferns and fern allies of South Africa - Sim, T. R. (Thomas Robertson), 1858 -1938 (University Press, 1915)

The ferns of South Africa, containing descriptions and figures of the ferns and fern allies of South Africa - Sim, T. R. (Thomas Robertson), 1858 -1938 (University Press, 1915)

The ferns of South Africa, containing descriptions and figures of the ferns and fern allies of South Africa - Sim, T. R. (Thomas Robertson), 1858 -1938 (University Press, 1915)

Flora of Southern Africa : the Republic of South Africa, Basutoland, Swaziland and South West Africa - Codd, L. E. W. (Govt. Printer, 1986)

Notes ptéridologiques - Bonaparte, Roland, prince, 1858 -1924 (Impr. pour l'auteur, 1915)

Notes ptéridologiques - Bonaparte, Roland, prince, 1858 -1924 (Impr. pour l'auteur, 1915)