Breslin P. B., Majure L. C., Nomenclatural Changes in Mammillaria and Pelecyphora: Repopulating Oehmea and Neobesseya, Haseltonia, 2026, 33(1):e331, doi: 10.2985/026.033.0101
The nomenclatural note expands Oehmea to include the species napina and zephyranthoides and proposes reinstating Neobesseya. The authors publish four new Neobesseya combinations and refer to type species, historical fruit and seed traits and the geographical distinctness of lineages. The rationale cites earlier phylogenies and announced fuller results of their own phylogenomic analysis.