Ferocactus emoryi (Engelm.) Orcutt Ferocactus emoryi (Engelm.) Orcutt, Cactography 5. 1926 sec. Guzmán & al. 2003≡Echinocactus emoryi Engelm. in Proc. Amer. Acad. Arts 3: 275. 1856 syn. sec. Guzmán & al. 2003