| Ailanthus Desf., 1788 |
| Ailanthus altissima (Mill.) Swingle, 1916 |
| Castela Turpin, 1806 |
| Castela emoryi (A. Gray) Moran & Felger, 1968 |
| Castela erecta Turpin, 1806 |
| Castela erecta subsp. texana (Torr. & A. Gray) Cronquist, 1945 |
| Castela juyyaania Pío-León & Carrillo-Gar., 2023 |
| Castela peninsularis Rose, 1909 |
| Castela polyandra Moran & Felger, 1968 |
| Castela retusa Liebm., 1854 |
| Castela stewartii (C.H. Mull.) Moran & Felger, 1968 |
| Castela texana (Torr. & A. Gray) Rose, 1909 |
| Castela tortuosa Liebm., 1854 |
| Holacantha A. Gray, 1854 |
| Holacantha stewartii C.H. Mull., 1941 |
| Picrasma Blume, 1825 |
| Picrasma mexicana Brandegee, 1924 |
| Picrasmateae Engl., 1896 |
| Quassia L., 1762 |
| Quassia amara L., 1762 |