Thelocactus bicolor subsp. schwarzii (Backeb.) N.P. Taylor in Cactaceae Consensus Init. 5: 14. 1998 sec. Hunt 2016
- ≡Thelocactus schwarzii Backeb. in Cact. Succ. J. Gr. Brit. 12: 81. 1950 syn. sec. Guzmán & al. 2003
- =Ferocactus bicolor var. schwarzii (Backeb.) N.P. Taylor in Cact. Succ. J. Gr. Brit. 41: 30. 1979 syn. sec. Guzmán & al. 2003
- =Thelocactus bicolor var. schwarzii (Backeb.) E.F. Anderson in Bradleya 5: 61. 1987 syn. sec. Guzmán & al. 2003