Thelocactus subterraneus Backeb. in Kakteen-Freund 1: 110–111. 1932 Thelocactus subterraneus Backeb. in Kakteen-Freund 1: 110–111. 1932is new combination for Echinocactus subterraneus Backeb. in Kakteen-Freund 1: 110. 1932Taxon for this nameThelocactus subterraneus Backeb.