Dryopteris intermedia
 Dryopteris intermedia (Muhl. ex Willd.) A. Gray the intermediate wood fern is an evergreen eastern North American species also occasionally found in Europe. It is a diploid species and is the parent of several species of hybrid origin including Dryopteris carthusiana.This fern is often confused with several other wood fern species including D. carthusiana D. campyloptera and D. expansa. It especially extensively shares the range of D.