Echinocereus bristolii W.T.Marshall in Cact. Succ. J. (Los Angeles) 9: 160. 1938
Echinocereus bristolii in Cact. Succ. J. (Los Angeles) 9: 160. 1938
is basionym for Echinocereus pectinatus var. bristolii in Saguaroland Bull. 10: 81. 1956
Echinocereus bristolii in Cact. Succ. J. (Los Angeles) 9: 160. 1938