| Erigeron scoparioides G.L. Nesom, 1989 |
| Erigeron seemannii (Sch. Bip.) Greene, 1891 |
| Erigeron socorrensis Brandegee, 1899 |
| Erigeron sordidus Gillies ex Hook. & Arn., 1837 |
| Erigeron spathulatus Vahl, 1793 |
| Erigeron speciosus (Lindl.) DC., 1836 |
| Erigeron stanfordii I.M. Johnst. ex G.L. Nesom, 1981 |
| Erigeron strigulosus Greene, 1891 |
| Erigeron subacaulis (McVaugh) G.L. Nesom, 1982 |
| Erigeron tenellus DC., 1836 |
| Erigeron tephropodus G.L. Nesom, 1981 |
| Erigeron tracyi Greene, 1902 |
| Erigeron trilobus Sond., 1856 |
| Erigeron turnerorum G.L. Nesom, 1987 |
| Erigeron unguiphyllus G.L. Nesom, 1981 |
| Erigeron variifolius S.F. Blake, 1917 |
| Erigeron velutipes Hook. & Arn., 1841 |
| Erigeron veracruzensis G.L. Nesom, 1989 |
| Erigeron versicolor (Greenm.) G.L. Nesom, 1982 |
| Erigeron vicinus G.L. Nesom, 1990 |