Echinocereus yavapaiensis M.A.Baker in Plant Syst. Evol. 258: 79. 2006 Echinocereus yavapaiensis M.A.Baker in Plant Syst. Evol. 258: 79. 2006Taxon for this nameEchinocereus yavapaiensis M.A.Baker in Plant Syst. Evol. 258: 79. 2006