Disocactus ackermannii (Haw.) Ralf Bauer subsp. ackermannii in Cactaceae Syst. Init. 17: 17. 2003 sec. Hunt 2016
- =Cactus ackermannii (Haw.) Lindl. in Edwards's Bot. Reg. 16: t. 1331. 1830 syn. sec. Guzmán & al. 2003
- =Cereus ackermannii (Haw.) Pfeiff., Enum. Diagn. Cact.: 123. 1837 syn. sec. Guzmán & al. 2003
- =Phyllocactus ackermannii (Haw.) Salm-Dyck, Cact. hort. dyck: 38. 1842 syn. sec. Guzmán & al. 2003
- =Nopalxochia ackermannii (Haw.) F.M. Knuth, Kaktus-ABC: 161. 1936 syn. sec. Guzmán & al. 2003
- =Epiphyllum ackermannii f. candidum Alexander in Cact. Succ. J. (Los Angeles) 19: 58. 1947 syn. sec. Guzmán & al. 2003
- =Nopalxochia ackermannii f. candida (Alexander) Kimnach in Cact. Succ. J. (Los Angeles) 53: 85. 1981 syn. sec. Guzmán & al. 2003
- =Disocactus ackermannii f. candidus (Alexander) Barthlott in Bradleya 9: 87. 1991 syn. sec. Guzmán & al. 2003