The family is accepted in APG IV (2016), but was not recognized in earlier Angiosperm Phylogeny Group III which considered that the recognition of the family may be necessary for a monophyletic Euphorbiaceae, but said that a formal recognition awaited additional molecular and morphological studies of the family.[2]
^Annals of Botany, doi:10.1093/aob/mct056, Advances in the floral structural characterization of the major subclades of Malpighiales, one of the largest orders of flowering plants, Peter K. Endress, Charles C. Davis and Merran L. Matthews
^Watson, L., and Dallwitz, M.J. 1992 onwards. The families of flowering plants: descriptions, illustrations, identification, and information retrieval. Version: 19 December 2012. http://delta-intkey.com
^Wurdack & Davis, Malpighiales phylogenetics: gaining ground on one of the most recalcitrant clades in the angiosperm tree of life. American Journal of Botany, 96(8):1551-1570. 2009.