Cereus tehuacanus (Weing.) Werderm. in Backeberg, Neue Kakteen: 71. 1931 Cereus tehuacanus (Weing.) Werderm. in Backeberg, Neue Kakteen: 71. 1931is new combination for Pilocereus tehuacanus Weing. in Z. Sukkulentenk. 3: 58. 1927Taxon for this nameCereus tehuacanus (Weing.) Werderm.