Pilosocereus tehuacanus (Weing.) Byles & G.D.Rowley in Cact. Succ. J. Gr. Brit. 19: 69. 1957 Pilosocereus tehuacanus (Weing.) Byles & G.D.Rowley in Cact. Succ. J. Gr. Brit. 19: 69. 1957is new combination for Pilocereus tehuacanus Weing. in Z. Sukkulentenk. 3: 58. 1927Taxon for this namePilosocereus tehuacanus (Weing.) Byles & G.D.Rowley