| 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 |
| Psilocarphus tenellus Nutt., 1840 |
| Psilostrophe DC., 1838 |
| Psilostrophe cooperi (A. Gray) Greene, 1891 |
| Psilostrophe gnaphalodes DC., 1838 |
| Psilostrophe gnaphalodes var. gnaphalodes DC., 1838 |
| Psilostrophe gnaphalodes var. mexicana (R.C. Br.) B.L. Turner, 1988 |