Osmunda regalis

== Translingual == === Proper noun === Osmunda regalis f A taxonomic species within the family Osmundaceae – royal fern, principally of large portions of western Eurasia. ==== Derived terms ==== American royal fern (Osmunda spectabilis) === References === Osmunda regalis on Wikipedia.Wikipedia Osmunda regalis on Wikispecies.Wikispecies Category:Osmunda regalis on Wikimedia Commons.Wikimedia Commons Osmunda regalis at USDA Plants database