Bisnaga macrodisca (Mart.) Doweld in Sukkulenty 2: 29. 1999 Bisnaga macrodisca (Mart.) Doweld in Sukkulenty 2: 29. 1999is new combination for Echinocactus macrodiscus Mart. in Nov. Actorum Acad. Caes. Leop.-Carol. Nat. Cur. 16(1): 341. 1832Taxon for this nameBisnaga macrodisca (Mart.) Doweld