Fischer, M.A. & Niklfeld, H. (eds.) (2011). Floristische Neufunde (99-123). Neilrichia 6: 365-396.
van Valkenburg, J. & Pot, R. (2008). Lagarosiphon major (Ridl.) Moss (Verspreidbladige waterpest) nu ook gevestigd in de Groene Ruimte in Nederland. Gorteria; Mededelingenblad ten Dienste van de Floristiek en het Vegetatie-Onderzoek van Nederland 33: 89-92.
Govaerts, R. (2003). World Checklist of Selected Plant Families Database in ACCESS: 1-216203. The Board of Trustees of the Royal Botanic Gardens, Kew.
WCSP 2014. 'World Checklist of Selected Plant Families. Facilitated by the Royal Botanic Gardens, Kew. Published on the Internet; http://apps.kew.org/wcsp/ Retrieved 2011 onwards
See http://kew.org/about-kew/website-information/legal-notices/index.htm You may use data on these Terms and Conditions and on further condition that: The data is not used for commercial purposes; You may copy and retain data solely for scholarly, educational or research purposes; You may not publish our data, except for small extracts provided for illustrative purposes and duly acknowledged; You acknowledge the source of the data by the words "With the permission of the Trustees of the Royal Botanic Gardens, Kew" in a position which is reasonably prominent in view of your use of the data; Any other use of data or any other content from this website may only be made with our prior written agreement.