| Iva asperifolia Less., 1830 |
| Iva axillaris Pursh, 1813 |
| Iva dealbata A. Gray, 1852 |
| Iva hayesiana A. Gray, 1876 |
| Jacobaea Mill., 1754 |
| Jacobaea maritima (L.) Pelser & Meijden, 2005 |
| Jaegeria Kunth, 1818 |
| Jaegeria bellidiflora (Moc. & Sessé ex DC.) A.M. Torres & Beaman, 1964 |
| Jaegeria glabra (S. Watson) B.L. Rob., 1909 |
| Jaegeria glabra var. australis B.L. Turner, 1984 |
| Jaegeria glabra var. glabra (S. Watson) B.L. Rob., 1909 |
| Jaegeria glabra var. nana B.L. Turner, 1984 |
| Jaegeria hirta (Lag.) Less., 1832 |
| Jaegeria macrocephala Less., 1832 |
| Jaegeria mnioides Kunth, 1820 |
| Jaegeria pedunculata Hook. & Arn., 1838 |
| Jaegeria purpurascens B.L. Rob., 1900 |
| Jaegeria rubustior Rzed., 2019 |
| Jaegeria standleyi (Steyerm.) B.L. Turner, 1980 |
| Jaegeria sterilis McVaugh, 1972 |