| Psathyrotopsis purpusii (Brandegee) Rydb., 1927 |
| Psathyrotopsis scaposa (A. Gray) H. Rob., 1980 |
| Pseudelephantopus Rohr, 1792 |
| Pseudelephantopus spicatus (Juss. ex Aubl.) Rohr, 1792 |
| Pseudoagarista Mesfin & D.J. Crawford, 2023 |
| Pseudoagarista crawfordii Mesfin) Mesfin & D.J. Crawford, 2023 |
| Pseudoagarista davilae (Panero & Villaseñor) Mesfin & D.J. Crawford, 2023 |
| Pseudoagarista guanajuatensis (B.L. Turner) Mesfin & D.J. Crawford, 2023 |
| Pseudoagarista mcvaughii (D.J. Crawford) Mesfin & D.J. Crawford, 2023 |
| Pseudoagarista oaxacensis (B.L. Turner) Mesfin & D.J. Crawford, 2023 |
| Pseudoagarista petrophila (A. Gray) Mesfin & D.J. Crawford, 2023 |
| Pseudoagarista petrophiloides (B.L. Rob. & Greenm.) Mesfin & D.J. Crawford, 2023 |
| Pseudoagarista pringlei (B.L. Rob.) Mesfin & D.J. Crawford,2023 |
| Pseudoagarista queretarensis (B.L. Turner) Mesfin & D.J. Crawford, 2023 |
| Pseudoagarista rhyacophila (Greenm.) Mesfin & D.J. Crawford, 2023 |
| Pseudoagarista rudis (Benth.) Mesfin & D.J. Crawford, 2023 |
| Pseudoclappia Rydb., 1923 |
| Pseudoclappia arenaria Rydb., 1923 |
| Pseudoclappia watsonii A.M. Powell & B.L. Turner, 1976 |
| Pseudoconyza Cuatrec., 1961 |