6 370094 Echinocereus pectinatus (Scheidw.) Engelm. [125 369422 Echinocactus pectinatus Scheidw.]
L.K.G. Pfeiffer, F. Otto, Abbild. Beschr. Cact. (Coloured version), vol. 2 : p. 10, t. 10 (1839)