Hybanthus attenuatus (Humb. & Bonpl. ex Schult.) Schulze-Menz in Notizbl. Bot. Gart. Berlin-Dahlem 12(111): 114. 1934 sec. Martínez-Salas 2011
- =Ionidium attenuatum Humb. & Bonpl. ex Schult., Syst. Veg. 5: 402. 1819 syn. sec. Villaseñor & al. 2010
- =Ionidium parietariifolium DC., Prodr. 1: 308. 1824 syn. sec. Villaseñor & al. 2010
- =Ionidium riparium A. Gray in Smithsonian Contr. Knowl. 5(6): 16. 1853 syn. sec. Villaseñor & al. 2010