Ferocactus emoryi subsp. covillei (Britton & Rose) D.R.Hunt & Dimmitt in Cactaceae Syst. Init. 20: 16. 2005
Ferocactus emoryi subsp. covillei in Cactaceae Syst. Init. 20: 16. 2005
is new combination for Ferocactus covillei, Cactaceae 3: 132–133, f. 138–139. 1922
Ferocactus emoryi subsp. covillei in Cactaceae Syst. Init. 20: 16. 2005