Cereus royenii (L.) Mill., Gard. Dict., ed. 8: Cereus No. 7. 1768
Cereus royenii, Gard. Dict., ed. 8: Cereus No. 7. 1768
is new combination for Cactus royenii, Sp. Pl.: 467. 1753
Cereus royenii, Gard. Dict., ed. 8: Cereus No. 7. 1768
Taxon for this name