Echinocereus polycephalus Britton & Rose, American Cyclopedia of Horticulture 3: 44. 1910
Echinocereus polycephalus, American Cyclopedia of Horticulture 3: 44. 1910
Taxon for this nameEchinocereus polycephalus, American Cyclopedia of Horticulture 3: 44. 1910