Nopalxochia macdougallii (Alexander) W.T.Marshall in Cactus (Paris) 4: 6. 1946 Nopalxochia macdougallii (Alexander) W.T.Marshall in Cactus (Paris) 4: 6. 1946is earlier isonym of Nopalxochia macdougallii (Alexander) Bravo in Cact. Suc. Mex. 17 (4): 119. 1972Taxon for this nameNopalxochia macdougallii (Alexander) W.T.Marshall