Rapicactus subterraneus (Backeb.) Buxb. & Oehme in Cactaceae (Berlin) 1942: 23. 1942 sec. Lodé 2018
- ≡Echinocactus subterraneus Backeb. in Kakteenfreund 1: 110. 1932 syn. sec. Donati & Zanovello 2004
- =Thelocactus subterraneus (Backeb.) Backeb. in Kakteenfreund 1: 110. 1932 syn. sec. Donati & Zanovello 2004
- =Gymnocactus subterraneus (Backeb.) Backeb. in Cact. Succ. J. (Los Angeles) 23: 151. 1951 syn. sec. Donati & Zanovello 2004
- =Neolloydia subterranea (Backeb.) H.E. Moore in Baileya 19: 165. 1975 syn. sec. Donati & Zanovello 2004
- =Turbinicarpus subterraneus (Backeb.) A.D. Zimmerman in Bradleya 9: 92. 1991 syn. sec. Donati & Zanovello 2004
- =Pediocactus subterraneus (Backeb.) Halda in Acta Mus. Richnov., Sect. Nat., 5: 17. 1998 syn. sec. Donati & Zanovello 2004
- =Turbinicarpus mandragora subsp. subterraneus (Backeb.) Lüthy in Kakteen And. Sukk. 50: 279. 1999 syn. sec. Donati & Zanovello 2004