Dryopteris Dilatata, commonly known as the broad buckler fern or male fern, is a species of fern native to Europe, Asia, and Africa. The fern grows up to 150 cm in height and has large triangular fronds with toothed edges. Synonyms for Dryopteris Dilatata include Dryopteris Filix-mas, Filix dilatata, Lastrea dilatata, and Thelypteris dilatata, all of which are used interchangeably to refer to this fern species. These synonyms reflect the complex taxonomy of ferns, with species often being reclassified under new genera or taxonomic revisions. Despite the name changes, Dryopteris Dilatata retains its status as a popular ornamental plant and a source of medicinal compounds.