| Pseudogynoxys haenkei (DC.) Cabrera, 1950 |
| Pseudogynoxys oerstedii (Benth. ex Oerst.) Cuatrec., 1955 |
| Pseudokyrsteniopsis R.M. King & H. Rob., 1973 |
| Pseudokyrsteniopsis perpetiolata R.M. King & H. Rob., 1973 |
| Psila Phil., 1891 |
| Psila cinnamomifolia (Kunth) Aristeg., 1964 |
| Psila trinervis (Pers.) Cabrera, 1955 |
| Psilactis A. Gray, 1849 |
| Psilactis asteroides A. Gray, 1849 |
| Psilactis brevilingulata Sch. Bip. ex Hemsl., 1879 |
| Psilactis coulteri A. Gray, 1849 |
| Psilactis crispa Brandegee, 1889 |
| Psilactis gentryi (Standl.) D.R. Morgan, 1993 |
| Psilactis odysseus (G.L. Nesom) D.R. Morgan, 1993 |
| Psilactis tenuis S. Watson, 1891 |
| Psilocarphus Nutt., 1840 |
| Psilocarphus brevissimus Nutt., 1840 |
| Psilocarphus chilensis Remy, 1886 |
| Psilocarphus oregonus Nutt., 1840 |
| Psilocarphus oregonus var. brevissimus (Nutt.) Jeps., 1901 |