Conyza laevigata (Rich.) Pruski in Brittonia 50(4): 475. 1998 sec. Pruski & Robinson 2018
- =Erigeron laevigatus Rich. in Actes Soc. Hist. Nat. Paris 1: 112. 1792 syn. sec. The Plant List 2013
- =Erigeron spathulatum Vahl, Bidr. Beskr. Ste Croix: 303. 1793 syn. sec. The Plant List 2013
- =Erigeron chinensis Jacq., Pl. Hort. Schoenbr. 3: 30, t. 303. 1798 syn. sec. The Plant List 2013
- =Conyza apurensis Kunth, Nov. Gen. Sp. Pl. (folio ed.) 4: 57. 1818 ["1820"] syn. sec. ???
- =Conyza subspathulata Cronquist in Bull. Torrey Bot. Club 70(6): 632. 1943 syn. sec. The Plant List 2013