Piptothrix areolaris (DC.) R.M. King & H. Rob. in Phytologia. 19(7): 426. 1970 sec. Pruski & Robinson 2018
- ≡Eupatorium areolare DC., Prodr. 5: 169. 1836 syn. sec. ???
- =Eupatorium tubiflorum Benth., Pl. Hartw.: 76. 1841 syn. sec. ???
- =Eupatorium cupressorum Standl. & Steyerm. in Publ. Field Mus. Nat. Hist., Bot. Ser. 23(4): 183. 1944 syn. sec. ???
- =Ageratina cupressorum (Standl. & Steyerm.) R.M. King & H. Rob. in Phytologia. 24(2): 89. 1972 syn. sec. ???
- =Ageratina areolaris (DC.) Gage ex B.L. Turner in Phytologia Mem. 2: 19. 1997 syn. sec. ???