Cereus trigonus hort. ex Pfeiff., Enum. Diagn. Cact.: 106. 1837 Cereus trigonus hort. ex Pfeiff., Enum. Diagn. Cact.: 106. 1837Taxon for this nameCereus trigonus hort. ex Pfeiff., Enum. Diagn. Cact.: 106. 1837
