×Echinocephala M.H.J.van der Meer in Cact. Phantast. 2019(4)-1: 2. 2019 ×Echinocephala M.H.J.van der Meer in Cact. Phantast. 2019(4)-1: 2. 2019Taxon for this name×Echinocephala M.H.J.van der Meer in Cact. Phantast. 2019(4)-1: 2. 2019
