Bárcenas, Rolando T. (2016), "A molecular phylogenetic approach to the systematics of Cylindropuntieae (Opuntioideae, Cactaceae)", Cladistics, 32 (4): 351–359, doi:10.1111/cla.12135, PMID34740297, S2CID86139803
irmng.org
"Peireskiopsis Vaupel", The Interim Register of Marine and Nonmarine Genera, retrieved 2021-06-20
Bárcenas, Rolando T. (2016), "A molecular phylogenetic approach to the systematics of Cylindropuntieae (Opuntioideae, Cactaceae)", Cladistics, 32 (4): 351–359, doi:10.1111/cla.12135, PMID34740297, S2CID86139803
semanticscholar.org
api.semanticscholar.org
Bárcenas, Rolando T. (2016), "A molecular phylogenetic approach to the systematics of Cylindropuntieae (Opuntioideae, Cactaceae)", Cladistics, 32 (4): 351–359, doi:10.1111/cla.12135, PMID34740297, S2CID86139803