Athyriaceae is a family of terrestrial ferns, with a cosmopolitan distribution. It is placed in the eupolypods II clade of the order Polypodiales in the class Polypodiopsida. ==Genera== Athyriaceae contains the following five genera. Athyriaceae has, in the past, included Cystopteris and Gymnocarpium, now part of Cystopteridaceae. Inversely, this ... Found on http://en.wikipedia.org/wiki/Athyriaceae