| Tragiinae G.L. Webster, 1975 |
| Tragiopsis H. Karst., 1859 |
| Trichosterigma Klotzsch & Garcke, 1860 |
| Trichosterigma benedictum (Greene) Millsp., 1917 |
| Trichosterigma californicum (Benth.) Klotzsch & Garcke, 1860 |
| Trichosterigma fulgens Klotzsch & Garcke, 1859 |
| Trichosterigma miserum (Benth.) Klotzsch & Garcke, 1860 |
| Tridesmis Lour., 1790 |
| Tyria Klotzsch ex Endl., 1850 |
| Tyria myricifolia Scheele, 1852 |
| Usteria Dennst., 1818 |
| Ventenatia Tratt., 1802 |
| Victorinia León, 1941 |
| Xamesike Raf., 1838 |
| Xamesike vermiculata (Raf.) Raf., 1840 |
| Zuckertia Baill., 1858 |
| Zuckertia cordata Baill., 1858 |
| Zuckertia manuelii (V.W. Steinm. & Ram.-Amezcua) Card.-McTeag. & L.J. Gillespie, 2016 |
| Zygophyllidium (Boiss.) Small, 1903 |
| Zygophyllidium biforme (S. Watson) Arthur, 1912 |