Species sources

• The grass-velds of Johannesburg suburbs: the Houghton Estate
• Treelist Melville Koppies
• The vegetation of South Africa, Lesotho and Swaziland. Strelitzia 19 (2006)
• Conservation value of the Egoli Granite Grassland, an endemic grassland in Gauteng, South Africa
• Current plant list
• Field Guide to The Wildflowers of Witwatersrand & Pretoria, including Magaliesberg and Suikerbosrand
• Ferns of the Witwatersrand
• PlantZAfrica