Acanthocereus undulosus (DC.) Croizat in Caldasia 2: 137. 1943 Acanthocereus undulosus (DC.) Croizat in Caldasia 2: 137. 1943is new combination for Cereus undulosus DC., Prodr. 3: 467. 1828Taxon for this nameAcanthocereus undulosus (DC.) Croizat