Cook, C.D.K. 2004. Aquatic and wetland plants of southern Africa. Backhuys Publishers, Leiden, The Netherlands.
Fischer, E. 1997. A revision of the genus Dopatrium (Scrophulariaceae-Gratioloideae). Nordic Journal of Botany 17(5):527-555.
Philcox, D. 1990. Scrophulariaceae. In: E. Launert and G.V. Pope (eds). Flora Zambesiaca 8 (Part 2):1-179. Flora Zambesiaca Managing Committee, London.
Raimondo, D., von Staden, L., Foden, W., Victor, J.E., Helme, N.A., Turner, R.C., Kamundi, D.A. and Manyama, P.A. 2009. Red List of South African Plants. Strelitzia 25. South African National Biodiversity Institute, Pretoria.
Sieben, E.J.J. 2009. The status and distribution of vascular plants (Magnoliophyta, Lycophyta, Pteridophyta). In: W.R.T. Darwall, K.G. Smith, D. Tweddle and P. Skelton (eds.), The status and distribution of freshwater biodiversity in southern Africa (pp. 83-98), IUCN and SAIAB, Gland, Switzerland and Grahamstown, South Africa.
|