Echinomastus macdowellii (Rebut ex Orcutt) Britton & Rose, Cactaceae 3: 151. 1922
Echinomastus macdowellii, Cactaceae 3: 151. 1922
is new combination for Echinocactus macdowellii in Monatsschr. Kakteenk. 4: 133. 1894
Echinomastus macdowellii, Cactaceae 3: 151. 1922
Taxon for this name