Rapicactus beguinii (N.P. Taylor) Lüthy subsp. beguinii in Cactus & Co. 7: 38. 2003 sec. Donati & Zanovello 2004
- =Echinocactus beguinii F.A.C. Weber ex K. Schum., Gesamtbeschr. Kakt.: 442. 1898 syn. sec. Donati & Zanovello 2004
- =Neolloydia beguinii Britton & Rose in Bull. Torrey Bot. Club 49: 252. 1922 syn. sec. Donati & Zanovello 2004
- =Gymnocactus beguinii (F.A.C. Weber ex K. Schum.) Backeb., Cactaceae (Backeberg) 5: 2851. 1961 syn. sec. Donati & Zanovello 2004
- =Neolloydia smithii var. beguinii (F.A.C. Weber ex K. Schum.) Kladiwa & Fittkau, Kakteen 46-47: C VIIIb. 1971 syn. sec. Bravo-Hollis & Sánchez-Mejorada 1991
- =Turbinicarpus mandragora subsp. beguinii (N.P. Taylor) Lüthy in Kakteen And. Sukk. 50: 279. 1999 syn. sec. Donati & Zanovello 2004
- =Neolloydia glassii Doweld in Cactaceae Syst. Init. 9: 20. 2000 syn. sec. Zachar 2004
- =Turbinicarpus beguinii subsp. haenkeanus Halda, Horácek & Malina in Acta Mus. Richnov., Sect. Nat., 10: 158. 2003 syn. sec. Zachar 2004