Harrisia platygona (Otto) Britton & Rose, Cactaceae 2: 156. 1920 Harrisia platygona (Otto) Britton & Rose, Cactaceae 2: 156. 1920is new combination for Cereus platygonus Otto, Cact. Hort. Dyck.49, ed. 18: 199. 1850Taxon for this nameHarrisia platygona (Otto) Britton & Rose