- Athyrium, genus Athyrium - temperate and tropical lady ferns; in some classifications placed in family Polypodiaceae or in the genus Asplenium
--1 is a kind of fern genus
--1 is a member of
--1 has members:Dryopteridaceae, family Dryopteridaceae, Athyriaceae, family Athyriaceae lady fern, Athyrium filix-femina; silvery spleenwort, glade fern, narrow-leaved spleenwort, Athyrium pycnocarpon, Diplazium pycnocarpon