Spathacantus hahnianus Baillon, T. Wendt, M. Vázquez, R. Reviere & I. Navarrete 3773 (CHAPA), Mexico: Veracruz, Hidalgotitlan. Note that specimen was identified as S. cf simplicifolius, a name that is synonymous of S. hahnianus.

 
 
  Part of: Burgos-Hernández M, Castillo-Campos G (2020) Taxonomic revision of the Mesoamerican genus Spathacanthus (Justicieae, Acanthoideae, Acanthaceae). PhytoKeys 144: 31-55. https://doi.org/10.3897/phytokeys.144.46929