Echinocereus pacificus (Engelm. ex Orcutt) F. Haage, Special Offer (catálogo): 12. 1897 sec. Hunt 2016
- ≡Cereus phoeniceus var. pacificus Engelm. ex Orcutt in W. Amer. Sci. 2: 46. 1886 syn. sec. Hunt & al. 2006
- =Cereus pacificus (Engelm. ex Orcutt) J.M. Coult. in Contr. U.S. Natl. Herb. 3: 397. 1896 syn. sec. Blum & al. 1998
- =Echinocereus triglochidiatus var. pacificus (Engelm. ex Orcutt) Bravo in Cact. Suc. Mex. 23: 66. 1978 syn. sec. Blum & al. 1998
- =Echinocereus polyacanthus var. pacificus (Engelm. ex Orcutt) N.P. Taylor in Kew Mag. 1: 160. 1984 syn. sec. Blum & al. 1998
- =Echinocereus polyacanthus subsp. pacificus (Engelm. ex Orcutt) Breckw. in Echinocereenfreund 9 (Sonderheft): 15. 1996 syn. sec. Hunt 2016
- =Echinocereus triglochidiatus subsp. pacificus (Engelm. ex Orcutt) U. Guzmán in Cactaceae Syst. Init. 16: 17. 2003 syn. sec. ???