Weber (1902), p. 457. "s'en distingue par sa tige plus glauque et surtout par son fruit, tout aussi grand mais plus spérique, moins squameux, et rempli d'une pulpe cramoisie d'un goût très délicat".
Weber, A. (1902). "Les Cactées de Costarica". Bulletin du Muséum d'Histoire Naturelle. 8 (6): 454–469. Retrieved 2021-03-05.
Korotkova, Nadja; Aquino, David; Arias, Salvador; Eggli, Urs; Franck, Alan; Gómez-Hinostrosa, Carlos; Guerrero, Pablo C.; Hernández, Héctor M.; Kohlbecker, Andreas; Köhler, Matias; Luther, Katja; Majure, Lucas C.; Müller, Andreas; Metzing, Detlev; Nyffeler, Reto; Sánchez, Daniel; Schlumpberger, Boris & Berendsohn, Walter G. (2021). "Cactaceae at Caryophyllales.org – a dynamic online species-level taxonomic backbone for the family". Willdenowia. 51 (2): 251–270. doi:10.3372/wi.51.51208. S2CID237402311.
Paśko, Paweł; Galanty, Agnieszka; Zagrodzki, Paweł; Ku, Yang Gyu; Luksirikul, Patraporn; Weisz, Moshe & Gorinstein, Shela (2021). "Bioactivity and cytotoxicity of different species of pitaya fruits–A comparative study with advanced chemometric analysis". Food Bioscience. 40: 100888. doi:10.1016/j.fbio.2021.100888. S2CID233528900.
Korotkova, Nadja; Aquino, David; Arias, Salvador; Eggli, Urs; Franck, Alan; Gómez-Hinostrosa, Carlos; Guerrero, Pablo C.; Hernández, Héctor M.; Kohlbecker, Andreas; Köhler, Matias; Luther, Katja; Majure, Lucas C.; Müller, Andreas; Metzing, Detlev; Nyffeler, Reto; Sánchez, Daniel; Schlumpberger, Boris & Berendsohn, Walter G. (2021). "Cactaceae at Caryophyllales.org – a dynamic online species-level taxonomic backbone for the family". Willdenowia. 51 (2): 251–270. doi:10.3372/wi.51.51208. S2CID237402311.
Paśko, Paweł; Galanty, Agnieszka; Zagrodzki, Paweł; Ku, Yang Gyu; Luksirikul, Patraporn; Weisz, Moshe & Gorinstein, Shela (2021). "Bioactivity and cytotoxicity of different species of pitaya fruits–A comparative study with advanced chemometric analysis". Food Bioscience. 40: 100888. doi:10.1016/j.fbio.2021.100888. S2CID233528900.