BOOKS:
Bruyns P.V. (2022). Euphorbia in Southern Africa. Vol. 1: Pp 1–474; Vol. 2: 475–985. Springer Nature Switzerland AG.
Curtis O., Cameron R., Helme N., Golding M., Privett S. & Stirton C.H. (2020). Field Guide to Renosterveld of the Overberg. Pp 488. Struik Nature, South Africa.
Williamson G. & Williamson F. (2016). The Sperrgebiet: Nature’s Parched Masterpiece. Pp 350. Oshana Publishing, South Africa.
Bruyns P.V. (2014). The Apocynaceae of Namibia. Pp 158. Strelitzia 34. South African National Biodiversity Institute, Pretoria.
Williamson G. (2008). Richtersveld: a Field Guide. Pp 72. Bergvliet Publishers, South Africa.
Bruyns P.V. (2005). Stapeliads of Southern Africa and Madagascar. Vol. 1: Pp 329; Vol. 2: Pp 330–606. Umdaus Press, Hatfield, South Africa.
Williamson G. (2000). Richtersveld, the Enchanted Wilderness. Pp 250. Umdaus Press, Hatfield, South Africa.
Bolus H.M.L. (1928–1969). Notes on Mesembryanthemum and allied Genera. University of Cape Town, Bolus Herbarium. Vol. 1: 1928, Pp 156; Vol. 2: 1928–1935, Pp 508; Vol. 3: 1936–1958 Pp 417; Vol. 4: 1958–1969, Pp 329.
Bolus H.M.L. (1914–1928). Annals of the Bolus Herbarium. Cambridge University Press, London. Vol. 1: 1914–1915, Pp 199; Vol. 2: 1916–1918, Pp 202; Vol. 3: 1920–1924 Pp 186; Vol. 4: 1925–1928, Pp 142.
Bolus H. (1896–1913). Orchids of South Africa. Vol. 1: 1896; Vol. 2: 1911; Vol. 3: 1913. William Wesley & Son, London.
Bolus H. (1888). The Orchids of the Cape Peninsula. Pp 142. South African Philosophical Society, Cape Town.
CHAPTERS IN BOOKS:
Klak C. (2023). Aizoaceae. In: Bramley G., Trias-Blasi A. & Wilford R. (eds.), The Kew Temperate Plant Families Identification Handbook. Pp 154–155. Kew Publishing.
Hedderson T.A. (2015). Mosses, Liverworts and Hornworts. In: Griffiths C., Day J. & Picker M. (eds.). Freshwater Life. Pp 308–311. Struik Nature, Cape Town.
Slingsby J.A., et al. (2014). The assembly and function of Cape plant communities in a changing world. In: Allsopp N., Colwell J.F. & Verboom G.A. (eds). Fynbos: Ecology, Evolution, and Conservation of a Megadiverse Region. Pp 200–223. Oxford University Press, Oxford.
Verboom G.A., et al. (2014). Cenozoic assembly of the Greater Cape flora. In: Allsopp N., Colwell J.F. & Verboom G.A. (eds). Fynbos: Ecology, Evolution, and Conservation of a Megadiverse Region. Pp 93–114. Oxford University Press, Oxford.
Klak C. (2013). Aizoaceae. In: Snijman D.A. (ed.). Plants of the Greater Cape Floristic Region 2: the Extra Cape Flora. Pp 260–309. Strelitzia 30. South African Biodiversity Institute, Pretoria.
