| Erigeron vreelandii Greene, 1905 |
| Erigeron wellsii G.L. Nesom, 1981 |
| Erigeron wislizeni (A. Gray) Greene, 1891 |
| Erigeron wislizeni subsp. purpurascens (Greenm.) G.L. Nesom, 1982 |
| Erigeron wislizeni var. purpurascens (Greenm.) G.L. Nesom, 1982 |
| Erigeron zacatensis G.L. Nesom, 1990 |
| Eriocarpha Cass., 1829 |
| Eriocarpum Nutt., 1840 |
| Eriocarpum scabrellum Greene, 1894 |
| Eriocarpum stenolobum Greene, 1894 |
| Eriocarpum wootonii Greene, 1898 |
| Eriocephalus L., 1753 |
| Eriocephalus trinervatus Sessé & Moc., 1890 |
| Eriocoma Kunth, 1820 |
| Eriocoma hartwegiana Kuntze, 1891 |
| Eriocoma karvinskii (DC.) Kuntze, 1891 |
| Eriocoma microcephala Kuntze, 1891 |
| Eriocoma mollissima Kuntze, 1891 |
| Eriocoma speciosa (DC.) Kuntze, 1891 |
| Eriocoma tomentosa (Cerv.) Kuntze, 1891 |