Harrisia regelii (Weing.) Borg, Cacti, ed. 1: 145. 1937 Harrisia regelii (Weing.) Borg, Cacti, ed. 1: 145. 1937is new combination for Cereus regelii Weing. in Monatsschr. Kakteenk. 20: 33. 1910Taxon for this nameHarrisia regelii (Weing.) Borg, Cacti, ed. 1: 145. 1937