Thelocactus bicolor var. wagnerianus (A.Berger) Krainz, Kakteen 18: C VIIIb. 1961 Thelocactus bicolor var. wagnerianus (A.Berger) Krainz, Kakteen 18: C VIIIb. 1961Taxon for this nameThelocactus bicolor var. wagnerianus (A.Berger) Krainz
