Ferocactus emoryi subsp. rectispinus
Ferocactus emoryi subsp. rectispinus in Cactaceae Consensus Init. 6: 16. 1998 sec. Hunt 20061
- ≡Echinocactus emoryi var. rectispinus in Contr. U.S. Natl. Herb. 3(7): 362. 1896 syn. sec. Hunt 20061
- ≡Ferocactus rectispinus, Cactaceae 3: 134. 1922 syn. sec. Hunt 20061
- ≡Ferocactus emoryi var. rectispinus in Bradleya 2: 37. 1984 syn. sec. Hunt 20061
- ≡Echinocactus emoryi f. rectispinus, Handb. Kakteenkult.: 161. 1907 syn. sec. ???
- ≡Echinocactus rectispinus in J. New York Bot. Gard. 12: 269. 1911 syn. sec. Kew WCVP (2019)2