Ferocactus viridescens (Torr. & A. Gray) Britton & Rose, Cactaceae (Britton & Rose) 3: 140. 1922 sec. Hunt 2016
- ≡Echinocactus viridescens Nutt. ex Torr. & A. Gray, Fl. N. Amer. 1: 554. 1840 syn. sec. Guzmán & al. 2003
- =Echinocactus orcuttii Engelm. ex Orcutt in W. Amer. Sci. 2: 46. 1886 syn. sec. Guzmán & al. 2003
- =Ferocactus orcuttii (Engelm. ex Orcutt) Britton & Rose, Cactaceae (Britton & Rose) 3: 134. 1922 syn. sec. Guzmán & al. 2003
- =Ferocactus viridescens var. littoralis G.E. Linds. in Cact. Succ. J. (Los Angeles) 36: 8. 1964 syn. sec. Guzmán & al. 2003
- =Ferocactus viridescens var. orcuttii (Engelm. ex Orcutt) G. Unger, Gross. Kugelkakteen: 105. 1992 syn. sec. Guzmán & al. 2003
- =Ferocactus viridescens subsp. littoralis (G.E. Linds.) F. Wolf & R. Wolf, Ferokakt. Baja California: 207. 2004 syn. sec. ???
- =Ferocactus viridescens subsp. orcuttii (Engelm. ex Orcutt) F. Wolf & R. Wolf, Ferokakt. Baja California: 218. 2004 syn. sec. Pilbeam & Bowdery 2005