The APG II system, of 2003, also recognizes this family and assigns it to the order Gunnerales in the clade core eudicots. The family then consists of one or two genera, Gunnera and, optionally, Myrothamnus. The latter may also be segregated as a separate family, Myrothamnaceae. This represents a change from the APG system, of 1998, which firmly recognized two separate families, unplaced as to order. The APG III system recognizes the family Gunneraceae and places Myrothamnus in the separate family Myrothamnaceae; both families are placed in the order Gunnerales in the core eudicots.
- Angiosperm Phylogeny Group (2009). "An update of the Angiosperm Phylogeny Group classification for the orders and families of flowering plants: APG III" (PDF). Botanical Journal of the Linnean Society 161 (2): 105–121. doi:10.1111/j.1095-8339.2009.00996.x. Retrieved 2013–06–26.
- Gunneraceae in L. Watson and M.J. Dallwitz (1992 onwards). The families of flowering plants: descriptions, illustrations, identification, information retrieval. Version: 21 May 2006. http://delta-intkey.com
- NCBI Taxonomy Browser
- links at CSDL
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