Lepismium trigonum (Pfeiff.) Backeb., Kaktus-ABC: 156. 1936 ["1935"] Lepismium trigonum (Pfeiff.) Backeb., Kaktus-ABC: 156. 1936 ["1935"]is new combination for Rhipsalis trigona Pfeiff., Enum. Diagn. Cact.: 133. 1837Taxon for this name? Lepismium trigonum (Pfeiff.) Backeb.