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Ferns of the United States

Various authors
Species Count: 109

Aspleniaceae

Athyriaceae

Blechnaceae

Cystopteridaceae

Dennstaedtiaceae

Dryopteridaceae

Equisetaceae

Hymenophyllaceae

Marsileaceae

Nephrolepidaceae

Onocleaceae

Ophioglossaceae

Osmundaceae

Polypodiaceae

Psilotaceae

Pteridaceae

Salviniaceae

Schizaeaceae

Tectariaceae

Thelypteridaceae

Woodsiaceae