| Eupatorium wrightii A. Gray, 1852 |
| Eupatorium xalapanum B.L. Turner, 1985 |
| Eupatorium xalapense Kunth, 1818 |
| Eupatorium xanthochlorum B.L. Rob., 1926 |
| Eupatorium yashanalense Whittem., 1988 |
| Eupatorium ymalense B.L. Rob., 1925 |
| Eupatorium zacuapanum B.L. Turner, 1989 |
| Eupatorium zunilanum Standl. & Steyerm., 1944 |
| Euphrosyne DC., 1836 |
| Euphrosyne ambrosiifolia A. Gray, 1852 |
| Euphrosyne dealbata (A. Gray) Panero, 2005 |
| Euphrosyne partheniifolia DC., 1836 |
| Euphrosyne xanthiifolia (Nutt.) A. Gray, 1853 |
| Eutetras A. Gray, 1879 |
| Eutetras palmeri A. Gray, 1879 |
| Eutetras pringlei Greenm., 1906 |
| Euthamia Nutt., 1818 |
| Euthamia occidentalis Nutt., 1841 |
| Euxenia Cham., 1820 |
| Evacopsis Pomel, 1874 |