×Cepheliocereus impossibilis P.V.Heath in Calyx 2: 111. 1992 ×Cepheliocereus impossibilis P.V.Heath in Calyx 2: 111. 1992is new combination for ×Diphalocereus impossibilis (P.V.Heath) M.H.J.van der Meer in Cact. Phantast. 2018(1): 3. 2018Taxon for this name×Cepheliocereus impossibilis P.V.Heath