Cactus tetragonus L., Sp. Pl.: 466. 1753 Cactus tetragonus L., Sp. Pl.: 466. 1753is basionym for Cereus tetragonus (L.) Mill., Gard. Dict., ed. 8: Cereus No. 2. 1768is basionym for Acanthocereus tetragonus (L.) Hummelinck in Succulenta (Netherlands) 20: 165. 1938Taxon for this nameCactus tetragonus L.