Carnegiea euphorbioides var. olfersii (Salm-Dyck) P.V.Heath in Calyx 2(3): 108. 1992 Carnegiea euphorbioides var. olfersii (Salm-Dyck) P.V.Heath in Calyx 2(3): 108. 1992is new combination for Cereus olfersii Salm-Dyck, Hort. Dyck.: 335. 1834Taxon for this nameCarnegiea euphorbioides var. olfersii (Salm-Dyck) P.V.Heath