Ancistrocactus brevihamatus (Engelm.) Britton & Rose subsp. brevihamatus Ancistrocactus brevihamatus (Engelm.) Britton & Rose subsp. brevihamatus, Cactaceae (Britton & Rose) 4: 5. 1923 sec. Hunt 2016≡Echinocactus brevihamatus Engelm. in Proc. Amer. Acad. Arts 3: 271. 1856 syn. sec. Hunt 2016