Aldama pachycephala (DC.) E.E. Schill. & Panero in Bot. J. Linn. Soc. 167(3): 324. 2011 sec. Villaseñor 2016
- ≡Tithonia pachycephala DC., Prodr. 5: 585, 1836 syn. sec. Schilling & Panero 2011
- =Viguiera pachycephala (DC.) Hemsl., Biol. Cent.-Amer., Bot. 2(8): 178. 1881 syn. sec. ???
- =Gymnolomia megacephala B.L. Rob. & Greenm. in Proc. Boston Soc. Nat. Hist. 29: 102. 1899 syn. sec. ???
- =Gymnolomia megacephala B.L. Rob. & Greenm. var. megacephala in Proc. Boston Soc. Nat. Hist. 29: 102. 1899 syn. sec. ???
- =Gymnolomia megacephala var. simulans B.L. Rob. & Greenm. in Proc. Boston Soc. Nat. Hist. 29: 102. 1899 syn. sec. ???