Echinomastus unguispinus (Engelm.) Britton & Rose, Cactaceae 3: 150. 1922
Echinomastus unguispinus, Cactaceae 3: 150. 1922
is new combination for Echinocactus unguispinus, Mem. Tour N. Mexico: 111. 1848
Echinomastus unguispinus, Cactaceae 3: 150. 1922
Taxon for this name