Machaerocereus eruca (K.Brandegee) Britton & Rose, Cactaceae 2: 115–116, f. 171–172. 1920 Machaerocereus eruca (K.Brandegee) Britton & Rose, Cactaceae 2: 115–116, f. 171–172. 1920is new combination for Cereus eruca K.Brandegee in Proc. Calif. Acad. Sci. ser. 2, 2: 163. 1889Taxon for this nameMachaerocereus eruca (K.Brandegee) Britton & Rose