| Allosorus pulchellus M. Martens & Galeotti, 1842 |
| Allosorus tomentosus (Link) Farw., 1920 |
| Ananthacorus Underw. & Maxon, 1908 |
| Ananthacorus angustifolius (Sw.) Underw. & Maxon, 1908 |
| Anetium Splitg., 1840 |
| Anetium citrifolium (L.) Splitg., 1840 |
| Anogramma Link, 1841 |
| Anogramma chaerophylla (Desv.) Link, 1841 |
| Anogramma guatemalensis (Domin) C. Chr., 1934 |
| Anogramma leptophylla (L.) Link, 1841 |
| Anogramma novogaliciana Mickel, 1992 |
| Antrophyum Kaulf., 1824 |
| Antrophyum cajenense (Desv.) Spreng., 1827 |
| Antrophyum carnosum Liebm., 1849 |
| Antrophyum chlorosporum Mickel & Beitel, 1988 |
| Antrophyum ensiforme Hook., 1841 |
| Antrophyum falcatum M. Martens & Galeotti, 1842 |
| Antrophyum feei W. Schaffn., 1857 |
| Antrophyum galeottii Fée, 1852 |
| Antrophyum lacantunense Rovirosa, 1909 |