Stenocactus obvallatus (DC.) A.W. Hill, Index Kew. 8: 228. 1933 sec. Hunt 2016
- ≡Echinocactus obvallatus DC., Prodr. 3: 462. 1828 syn. sec. Guzmán & al. 2003
- =Echinocactus anfractuosus Mart. ex Pfeiff., Enum. Diagn. Cact.: 63. 1837 syn. sec. Guzmán & al. 2003
- =Echinocactus lancifer A. Dietr. in Allg. Gartenzeitung 7: 154. 1839 syn. sec. ???
- =Echinofossulocactus anfractuosus (Mart. ex A. Dietr. & Otto) Lawr. in Gard. Mag. & Reg. Rural Domest. Improv. 17: 317. 1841 syn. sec. Guzmán & al. 2003
- =Echinofossulocactus obvallatus (DC.) Lawr. in Gard. Mag. & Reg. Rural Domest. Improv. 17: 317. 1841 syn. sec. Guzmán & al. 2003
- =Echinocactus lamellosus A. Dietr. in Allg. Gartenzeitung 15: 177. 1847 syn. sec. Guzmán & al. 2003
- =Echinocactus hastatus Hopffer ex K. Schum., Gesamtbeschr. Kakt.: 376. 1898 syn. sec. Guzmán & al. 2003
- =Echinofossulocactus confusus Britton & Rose, Cactaceae (Britton & Rose) 3: 120. 1922 syn. sec. Guzmán & al. 2003
- =Echinofossulocactus hastatus (Hopffer ex K. Schum.) Britton & Rose, Cactaceae (Britton & Rose) 3: 111. 1922 syn. sec. Guzmán & al. 2003
- =Echinofossulocactus lamellosus (A. Dietr.) Britton & Rose, Cactaceae (Britton & Rose) 3: 113. 1922 syn. sec. Hunt & al. 2006
- =Echinofossulocactus lancifer (A. Dietr.) Britton & Rose, Cactaceae (Britton & Rose) 3: 118. 1922 syn. sec. Hunt & al. 2006
- =Stenocactus anfractuosus (Mart. ex Pfeiff.) A. Berger ex A.W. Hill, Index Kew. 8: 228. 1933 syn. sec. Guzmán & al. 2003
- =Stenocactus hastatus (Hopffer ex K. Schum.) A. Berger ex A.W. Hill, Index Kew. 8: 228. 1933 syn. sec. Guzmán & al. 2003
- =Stenocactus lamellosus (A. Dietr.) A. Berger ex A.W. Hill, Index Kew. 8: 228. 1933 syn. sec. Hunt & al. 2006
- =Stenocactus confusus (Britton & Rose) F.M. Knuth, Kaktus-ABC: 354. 1936 syn. sec. Guzmán & al. 2003
- =Stenocactus lancifer (A. Dietr.) A. Berger ex Backeb. & F.M. Knuth, Kaktus-ABC: 354. 1936 syn. sec. Hunt & al. 2006
- =Echinofossulocactus guerraianus Backeb., Stachlige Wildnis: 339. 1942 syn. sec. Guzmán & al. 2003
- =Echinofossulocactus crispatus f. anfractuosus (Mart. ex Pfeiff.) P.V. Heath in Calyx 2: 86. 1992 syn. sec. Guzmán & al. 2003
- =Echinofossulocactus crispatus f. confusus (Britton & Rose) P.V. Heath in Calyx 2: 86. 1992 syn. sec. Guzmán & al. 2003
- =Echinofossulocactus crispatus f. guerraianus (Backeb.) P.V. Heath in Calyx 2: 86. 1992 syn. sec. Guzmán & al. 2003
- =Echinofossulocactus crispatus f. lamellosus (A. Dietr.) P.V. Heath in Calyx 2: 86. 1992 syn. sec. Guzmán & al. 2003
- =Echinofossulocactus crispatus f. lancifer (A. Dietr.) P.V. Heath in Calyx 2: 86. 1992 syn. sec. ???
- =Echinofossulocactus crispatus f. obvallatus (DC.) P.V. Heath in Calyx 2: 86. 1992 syn. sec. Guzmán & al. 2003
- =Echinofossulocactus sulphureus f. hastatus (Hopffer ex K. Schum.) P.V. Heath in Calyx 2: 87. 1992 syn. sec. Guzmán & al. 2003