| 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 |
| Pteris apicalis Liebm., 1849 |
| Pteris aquilina L., 1753 |
| Pteris aquilina var. mexicana Fée, 1857 |
| Pteris aquilina var. pubescens Kunze, 1839 |
| Pteris arachnoidea Kaulf., 1824 |
| Pteris arborescens M. Martens & Galeotti, 1842 |
| Pteris atropurpurea L., 1753 |
| Pteris aurantiaca Cav., 1801 |