Echinocereus pectinatus (Scheidw.) Engelm. Echinocereus pectinatus (Scheidw.) Engelm., Memoir Tour N. Mexico [Wislizenus]: 110. 1848 sec. Guzmán & al. 2003≡Echinocactus pectinatus Scheidw. in Bull. Acad. Roy. Sci. Bruxelles 5: 492. 1838 syn. sec. Guzmán & al. 2003