Borzicactus ritteri (Buining) Donald in Natl. Cact. Succ. J. 26(1): 10. 1971
Borzicactus ritteri in Natl. Cact. Succ. J. 26(1): 10. 1971
is new combination for Matucana ritteri in Succulenta (Netherlands) 1959: 2. 1959
Borzicactus ritteri in Natl. Cact. Succ. J. 26(1): 10. 1971
Taxon for this name