Mauseth J. D., Anatomical adaptations to xeric conditions in Maihuenia (Cactaceae), a relictual, leaf-bearing cactus, Journal of Plant Research, 1999, 112(3):307-315, doi: 10.1007/pl00013886
A comparison of leaf, young stem and older axis anatomy in both Maihuenia species. The paper describes the proportion of parenchyma, wood structure, wide-band tracheids and intraxylary bark in M. patagonica.