| Ericameria paniculata (A. Gray) A. Gray ex Rydb., 1917 |
| Ericameria parishii (Greene) H.M. Hall, 1907 |
| Ericameria parishii var. peninsularis (Moran) G.L. Nesom, 1989 |
| Ericameria parrasana S.F. Blake, 1917 |
| Ericameria pinifolia (A. Gray) H.M. Hall, 1907 |
| Ericameria pseudobaccharis (S.F. Blake) Urbatsch, 1978 |
| Ericameria purpusii Brandegee, 1911 |
| Ericameria riskindii B.L. Turner & G. Langford, 1982 |
| Ericameria triantha (S.F. Blake) Shinners, 1951 |
| Erigerodes L. ex Kuntze, 1891 |
| Erigerodes brasiliense Kuntze, 1891 |
| Erigerodes mexicanum Kuntze, 1891 |
| Erigeron L., 1753 |
| Erigeron affinis DC., 1836 |
| Erigeron alamosanus Rose, 1891 |
| Erigeron annuactis G.L. Nesom, 1989 |
| Erigeron annuus (L.) Pers., 1807 |
| Erigeron arisolius G.L. Nesom, 1990 |
| Erigeron arizonicus A. Gray, 1883 |
| Erigeron astranthioides De Jong & G.L. Nesom, 1982 |