| Polytaenium Desv., 1827 |
| Polytaenium cajenense (Desv.) Benedict, 1911 |
| Polytaenium chlorosporum (Mickel & Beitel) E.H. Crane, 1997 |
| Polytaenium citrifolium (L.) Schuettp., 2016 |
| Polytaenium ensiforme (Hook.) Benedict, 1911 |
| Polytaenium feei (W. Schaffn. ex Fée) Maxon, 1926 |
| Polytaenium lanceolatum (Sw.) Desv., 1827 |
| Polytaenium lineatum (Sw.) J. Sm., 1841 |
| Pomatophytum M.E. Jones, 1930 |
| Pomatophytum pocillatum M.E. Jones, 1930 |
| Psilogramme Kuhn, 1882 |
| Psilogramme chiapensis Maxon, 1915 |
| Pteridaceae E.D.M. Kirchn., 1831 |
| Pteridoideae Link, 1841 |
| Pteris L., 1753 |
| Pteris aequalis C. Presl, 1825 |
| Pteris alabamensis Buckley, 1843 |
| Pteris altissima Poir., 1804 |
| Pteris andromedifolia Kaulf., 1824 |
| Pteris angustifolia Sw., 1788 |