Abrodictyum, Genus
Acrosorus, Genus
Acrostichum, Genus
Actiniopteris, Genus
Actinostachys, Genus
Acystopteris, Genus
Adenophorus, Genus
Adiantopsis, Genus
Adiantum, Genus
Aenigmopteris, Genus
Aglaomorpha, Genus
Alansmia, Genus
Aleuritopteris, Genus
Allosorus, Genus
Alsophila, Genus
Amauropelta, Genus
Amblovenatum, Genus
Ampelopteris, Genus
Ananthacorus, Genus
Anchistea, Genus
Anemia, Genus
Angiopteris, Genus
Anogramma, Genus
Antrophyopsis, Genus
Antrophyum, Genus
Arachniodes, Genus
Archigrammitis, Genus
Argyrochosma, Genus
Arthrobotrya, Genus
Arthromeris, Genus
Arthropteris, Genus
Ascogrammitis, Genus
Aspidotis, Genus
Asplenium, Genus
Astrolepis, Genus
Athyrium, Genus
Austroblechnum, Genus
Austrogramme, Genus
Austrolycopodium, Genus
Azolla, Genus