Arthrocereus rowleyanus (Backeb.) Buxb. in Kakteen And. Sukk. 20: 97. 1969 Arthrocereus rowleyanus (Backeb.) Buxb. in Kakteen And. Sukk. 20: 97. 1969is new combination for Pygmaeocereus rowleyanus Backeb., Cactaceae 6: 3718. 1962Taxon for this nameArthrocereus rowleyanus (Backeb.) Buxb.