fern genus - genera of ferns and fern allies

Athyriaceae, Dryopteridaceae, family Athyriaceae, family Dryopteridaceae - alternative names for one of a number of families into which the family Polypodiaceae has been subdivided in some classification systems

Gymnocarpium dryopteris, oak fern, Thelypteris dryopteris - bright blue-green fern widely distributed especially in damp acid woodlands of temperate northern hemisphere