| Perezia runcinata Lag. ex D. Don, 1830 |
| Perezia scapiformis Bacig., 1931 |
| Perezia scaposa S.F. Blake, 1943 |
| Perezia seemannii A. Gray, 1852 |
| Perezia simulata S.F. Blake, 1943 |
| Perezia thurberi A. Gray, 1854 |
| Perezia thyrsoidea A. Gray, 1858 |
| Perezia tomentosa Brandegee, 1908 |
| Perezia turbinata La Llave & Lex., 1824 |
| Perezia umbratalis B.L. Rob. & Greenm., 1896 |
| Perezia vernonioides A. Gray, 1887 |
| Perezia wislizeni A. Gray, 1849 |
| Perezia wislizeni var. megacephala A. Gray, 1887 |
| Perezia wrightii A. Gray, 1852 |
| Perezia wrightii var. arizonica M.E. Jones, 1933 |
| Pereziopsis J.M. Coult., 1895 |
| Pereziopsis donnell-smithii J.M. Coult., 1895 |
| Pericalia Cass., 1827 |
| Pericalia michoacana (B.L. Rob.) Rydb., 1924 |
| Pericalia ovatifolia (Sch. Bip.) Rydb., 1924 |