| Tithonia decurrens A. Gray, 1849 |
| Tithonia diversifolia (Hemsl.) A. Gray, 1883 |
| Tithonia fruticosa Canby & Rose, 1891 |
| Tithonia glaberrima Kuntze, 1891 |
| Tithonia helianthoides Weinm. ex Steud., 1841 |
| Tithonia koelzii McVaugh, 1972 |
| Tithonia longiradiata (Bertol.) S.F. Blake, 1926 |
| Tithonia macrophylla S. Watson, 1891 |
| Tithonia pachycephala DC., 1836 |
| Tithonia paneroi (B.L. Turner) E.E. Schill. & Panero, 2011 |
| Tithonia pedunculata Cronquist, 1965 |
| Tithonia rotundifolia (Mill.) S.F. Blake, 1917 |
| Tithonia scaberrima Benth., 1853 |
| Tithonia splendens Planch., 1852 |
| Tithonia tagetiflora Desf., 1802 |
| Tithonia thurberi A. Gray, 1873 |
| Tithonia tubaeformis (Jacq.) Cass., 1825 |
| Tithonia vilmoriniana Pamp., 1908 |
| Tomentaurum G.L. Nesom, 1991 |
| Tomentaurum niveum (S. Watson) G.L. Nesom, 1991 |