Genus
Athyrium (Lady ferns)
Athyrium filix-femina cyclosorum. Photo: (c) Neil Gilham, some rights reserved (CC BY-NC)
Athyrium (lady-fern) is a genus of about 180 species of terrestrial ferns, with a cosmopolitan distribution. It is placed in the family Athyriaceae, in the order Polypodiales. Its genus name is from Greek a- (‘without’) and Latinized Greek thureos (‘shield’), describing its inconspicuous indusium (sorus’ covering). The common name “lady fern” refers in particular to the common lady fern.
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