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Genus Phyllitis
- a genus of ferns belonging to the family Polypodiaceae (in some classification systems included in genus Asplenium)
Genus Scolopendrium
- a genus of ferns belonging to the family Polypodiaceae (in some classification systems included in genus Asplenium)
Genus Blechnum
- in some classification systems placed in family Polypodiaceae; terrestrial ferns of cosmopolitan distribution mainly in southern hemisphere: hard ferns
Genus Doodia
- in some classification systems placed in family Polypodiaceae; small terrestrial colony-forming ferns of Australasia
Genus Sadleria
- low tree ferns with large fronds; in rain forests and on lava flows of Hawaiian Islands
Genus Stenochlaena
- large tropical ferns; some epiphytic climbers and some terrestrial bog ferns; Africa; Asia; Australasia
Genus Woodwardia
- in some classification systems placed in family Polypodiaceae: chain ferns
Genus Cyathea
- type genus of the Cyatheaceae: tree ferns of the tropical rain forest to temperate woodlands
Genus Davallia
- Old World tropical fern; in some classification systems placed directly in family Polypodiaceae
Genus Dennstaedtia
- chiefly terrestrial ferns; in some classification systems placed in family Polypodiaceae