Menezes M. O. T., Alves L. I. F., A new tetraploid species of Tacinga (Cactaceae) from Ceará, Northeastern Brazil, Rodriguésia, 2024, 75:e01922023, doi: 10.1590/2175-7860202475048
A description of Tacinga mirim based on specimens from Ceará, morphological comparison and chromosome studies. The paper includes the protologue, a locality map, analysis of previous identifications as T. palmadora, vegetative reproduction and a preliminary threat assessment for the new species. It also compares morphological traits and ploidy levels in other members of the genus.