is a specific kind of: class.

has as a member: fern | family Schizaeaceae, Schizaeaceae | family Marsileaceae, Marsileaceae | family Salviniaceae, Salviniaceae | Ophioglossales, order Ophioglossales | Filicales, order Filicales, order Polypodiales, Polypodiales | Adiantaceae, family Adiantaceae | Cyatheaceae, family Cyatheaceae | Davalliaceae, family Davalliaceae | Dennstaedtiaceae, family Dennstaedtiaceae | Athyriaceae, Dryopteridaceae, family Athyriaceae, family Dryopteridaceae | family Lomariopsidaceae, Lomariopsidaceae | family Lophosoriaceae, Lophosoriaceae | family Loxomataceae, Loxomataceae | Marattiales, order Marattiales | Cryptogrammataceae, family Cryptogrammataceae | family Thelypteridaceae, Thelypteridaceae ... show more.

is a member of: division Pteridophyta, Pteridophyta.