Acanthocalycium hyalacanthum (Speg.) Backeb., Kaktus-ABC: 225. 1936 ["1935"] Acanthocalycium hyalacanthum (Speg.) Backeb., Kaktus-ABC: 225. 1936 ["1935"]is new combination for Lobivia hyalacantha Speg. in Anales Soc. Ci. Argent. 99: 122. 1925Taxon for this nameAcanthocalycium hyalacanthum (Speg.) Backeb.