Carrillo-Reyes, Pablo; Sosa, Victoria & Mort, Mark E. (2009), "Molecular phylogeny of the Acre clade (Crassulaceae): Dealing with the lack of definitions for Echeveria and Sedum", Molecular Phylogenetics and Evolution, 53 (1): 267–276, Bibcode:2009MolPE..53..267C, doi:10.1016/j.ympev.2009.05.022, PMID19482091
Vázquez-Cotero, Carlos; Sosa, Victoria & Carrillo-Reyes, Pablo (2017), "Phylogenetic position of Echeveria heterosepala (Crassulaceae): a rare species with diagnostic characters of Pachyphytum", Botanical Sciences, 95 (3): 515–526, doi:10.17129/botsci.1190
harvard.edu
ui.adsabs.harvard.edu
Carrillo-Reyes, Pablo; Sosa, Victoria & Mort, Mark E. (2009), "Molecular phylogeny of the Acre clade (Crassulaceae): Dealing with the lack of definitions for Echeveria and Sedum", Molecular Phylogenetics and Evolution, 53 (1): 267–276, Bibcode:2009MolPE..53..267C, doi:10.1016/j.ympev.2009.05.022, PMID19482091
Carrillo-Reyes, Pablo; Sosa, Victoria & Mort, Mark E. (2009), "Molecular phylogeny of the Acre clade (Crassulaceae): Dealing with the lack of definitions for Echeveria and Sedum", Molecular Phylogenetics and Evolution, 53 (1): 267–276, Bibcode:2009MolPE..53..267C, doi:10.1016/j.ympev.2009.05.022, PMID19482091
rhs.org.uk
"AGM Plants - Ornamental"(PDF). Royal Horticultural Society. July 2017. p. 34. Retrieved 25 April 2019.
