| Austroblechnum Gasper V.A.O. Dittrich, 2026 |
| Austroblechnum stoloniferum (Mett. ex Fourr.) Gasper & V.A.O. Dittrich, 2016 |
| Blechnaceae Newman, 1844 |
| Blechnoideae Gasper, V.A.O. Dittrich & Salino, 2016 |
| Blechnum L., 1753 |
| Blechnum angustifrons Fée, 1857 |
| Blechnum appendiculatum Willd., 1810 |
| Blechnum asplenioides Sw., 1817 |
| Blechnum danaeaceum (Kunze) Christ, 1901 |
| Blechnum divergens (Kunze) Mett., 1864 |
| Blechnum ensiforme (Liebm.) C. Chr., 1905 |
| Blechnum falciforme (Liebm.) C. Chr., 1905 |
| Blechnum fragile (Liebm.) C.V. Morton & Lellinger, 1967 |
| Blechnum fraxineum Willd., 1810 |
| Blechnum ghiesbreghtii (Baker) C. Chr., 1905 |
| Blechnum glandulosum Kaulf. ex Link, 1822 |
| Blechnum gracile Kaulf., 1824 |
| Blechnum intermedium Link, 1833 |
| Blechnum lehmannii Hieron., 1904 |
| Blechnum lherminieri (Bory) C. Chr., 1905 |