Gorelick R., Subdermal Woody Thorns with Secondary Growth May Support Shoots of Senita, Lophocereus schottii (Cactaceae), Haseltonia, 2016, 22:18-21, doi: 10.2985/026.022.0104
Describes woody projections connecting the vascular cylinder and areoles of Lophocereus schottii. Documentation comes mainly from the skeleton of one tagged plant in Arizona. The author interprets the structures as a possible contribution of vascular traces to supporting parenchymatous stems and proposes a mechanical hypothesis.