1. Baker, J. G. (1898). Diagnoses Africanae, XI. Bull. Misc. Inform. Kew 1898(139): 145 – 164.
2. Bandeira, S., Bolnick, D. & Barbosa, F. (2007). Wild Flowers of Southern Mozambique. Universidade Eduardo Mondlane, Maputo.
3. Burrows, J. & Willis, C. (eds). (2005). Plants of the Nyika Plateau. Southern African Botanical Diversity Network Report No. 31.
4. Calane da Silva, M., Izidine, S. & Bela Amude, A. (2004). A preliminary checklist of the vascular plants of Mozambique. Southern African Botanical Diversity Network Report No. 30.
5. de Candolle, A. P. (1838). Prodromus systematis naturalis regni vegetabilis 6: Sistens Compositarum continuationem. Treuttel et Würtz, Parisiis.