| Asteraceae | |
Psathyrotes annua
| (Nutt.) A. Gray | Smithsonian Contr. Knowl. 5(6): 100 | 1853 |
| Asteraceae | |
Psathyrotes incisa
| A. Gray | Pl. Nov. Thurb. 322–323 | 1854 |
| Asteraceae | |
Psathyrotes pilifera
| A. Gray | Proc. Amer. Acad. Arts 19: 50 | 1884 [1883] |
| Asteraceae | |
Psathyrotes purpusii
| Brandegee | Univ. Calif. Publ. Bot. 4(11): 193–194 | 1911 |
| Asteraceae | |
Psathyrotes ramosissima
| (Torr.) A. Gray | Proc. Amer. Acad. Arts 7(2): 363 | 1868 |
| Asteraceae | |
Psathyrotes scaposa
| A. Gray | Smithsonian Contr. Knowl. 5(6): 100–101, pl. 13 | 1853 |
| Asteraceae | |
Psathyrotes schottii
| (A. Gray) A. Gray | Proc. Amer. Acad. Arts 9: 206 | 1874 |