Dryopteris aitoniana is a fertile hybrid wood fern, native to the rich, moist woodlands of eastern North America. It develops large, erect, bipinnate-pinnatifid fronds.
Above information is sourced from Wikipedia
© Sébastien SANT (CC-BY-NC)
© Jean-Luc TASSET − Photoflora
© (c) Vítor Jorge, some rights reserved (CC BY)
© (c) Mário de Pinto Balsemão, some rights reserved (CC BY)