Majure L. C., Puente R., Griffith M. P., Judd W. S., Soltis P. S., Soltis D. E., Phylogeny of Opuntia s.s. (Cactaceae): Clade delineation, geographic origins, and reticulate evolution, American Journal of Botany, 2012, 99(5):847-864, doi: 10.3732/ajb.1100375
The molecular analysis compares lineages of the tribe Opuntieae and the circumscription of Opuntia sensu stricto. It presents the position of Brasiliopuntia in the reconstructed phylogenetic tree.