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

Athyrium thelypteroides, Deparia acrostichoides, silvery spleenwort - fern with elongate silvery outgrowths enclosing the developing spores