| Polypodium hygrometricum Splitg., 1840 |
| Polypodium imbricatum Liebm., 1849 |
| Polypodium inaequale (T. Moore) Lowe, 1858 |
| Polypodium incanum Sw., 1788 |
| Polypodium incanum var. fimbriatum M. Martens & Galeotti, 1842 |
| Polypodium induens Maxon, 1905 |
| Polypodium insigne Liebm., 1849 |
| Polypodium isomeron E. Fourn., 1872 |
| Polypodium juglandifolium Humb. & Bonpl. ex Willd., 1810 |
| Polypodium jungermannioides Klotzsch, 1847 |
| Polypodium karstenianum Klotzsch, 1847 |
| Polypodium karwinskyanum (C. Presl) A. Braun ex Kunze, 1850 |
| Polypodium lanceolatum L., 1753 |
| Polypodium lanceolatum var. trichophorum Weath., 1922 |
| Polypodium laxifrons Liebm., 1849 |
| Polypodium lepidotrichum (Fée) Maxon, 1916 |
| Polypodium leptophyllum L., 1753 |
| Polypodium leptostomum Fée, 1857 |
| Polypodium lesourdianum E. Fourn., 1872 |
| Polypodium leucosticton Kunze ex Klotzsch, 1847 |