Epiphyllum oxypetalum (DC.) Haw. in Philos. Mag. Ann. Chem. 6: 109. 1829 sec. Hunt 2016
- ≡Cereus oxypetalus DC., Prodr. 3: 470. 1828 syn. sec. Guzmán & al. 2003
- =Cereus latifrons Zucc. ex Pfeiff., Enum. Diagn. Cact.: 125. 1837 syn. sec. Bauer 2003
- =Phyllocactus latifrons (Zucc. ex Pfeiff.) Link ex Walp. in Repert. Bot. Syst. 2: 341. 1843 syn. sec. Bauer 2003
- =Phyllocactus oxypetalus (DC.) Link ex Walp. in Repert. Bot. Syst. 2: 341. 1843 syn. sec. Guzmán & al. 2003
- =Phyllocactus grandis Lem., Fl. Serres Jard. Eur. 3: 255. 1847 syn. sec. Guzmán & al. 2003
- =Epiphyllum acuminatum K. Schum., Fl. Bras. 4: 222. 1890 syn. sec. Guzmán & al. 2003
- =Phyllocactus acuminatus (K. Schum.) K. Schum., Gesamtbeschr. Kakt.: 213. 1897 syn. sec. Guzmán & al. 2003
- =Phyllocactus purpusii Weing. in Monatsschr. Kakteenk. 17: 34. 1907 syn. sec. Guzmán & al. 2003
- =Epiphyllum grande (Lem.) Britton & Rose in Contr. U.S. Natl. Herb. 16: 257. 1913 syn. sec. Guzmán & al. 2003
- =Epiphyllum oxypetalum var. purpusii (Weing.) Backeb., Cactaceae (Backeberg) 2: 747. 1959 syn. sec. Guzmán & al. 2003