Freitas, J. G., Alves, L. I. F., Zappi, D. C., Almeida, E. M. D., Peraza-Flores, L. N., Amaral, D. O. J. D., Araújo, D. B. P., & Batista, F. R. D. C. (2021). Novelties in Cactaceae from Eastern Brazil: Adding two new species and one new nothospecies to Tacinga (Opuntioideae). Phytotaxa, 490(3), 239–252. https://doi.org/10.11646/phytotaxa.490.3.2