Gorelick R., Beaudin M., Opuntia arenaria—Areoles and Glochids on Roots, Haseltonia, 2026, 33(1):1-6, doi: 10.2985/026.033.0106
The anatomy of Opuntia arenaria roots and observations of their production of areoles with hairs and glochids. The paper documents areoles breaking through the periderm, abundant mucilage in tissues and the development of adventitious shoots from roots, including below the substrate surface.