Pseudolobivia nigra (Backeb.) Backeb., Stachlige Wildnis: 244. 1942 Pseudolobivia nigra (Backeb.) Backeb., Stachlige Wildnis: 244. 1942is new combination for Echinopsis nigra Backeb., Kaktus-ABC: 221. 1936 ["1935"]Taxon for this namePseudolobivia nigra (Backeb.) Backeb.