Clarke, H. & Charters, M. (ed. Moll, E.) (2016) The Illustrated Dictionary of Southern African Plant Names Jacana Media, South Africa
| Species | Content | |
| baumannii Engl. | Description, Image | |
| giberroa Hemsl. | Description, Image | |
| hartlaubii Buchenau | ||
| holstii Engl. | ||
| mildbraedii Engl. | Description, Image | |
| minutula Engl. | Image | |
| molleri Henriq. | ||
| petiolata Hauman [NrEnd] | Description, Image | |
| rubescens De Wild. | ||
| stuhlmannii Schweinf. ex Stuhlmann [NrEnd] | ||
| wollastonii Baker f. [NrEnd] |