Thelypteris palustris (Marsh fern) is a U.S. Northeast native fern that enjoys full sun to light shade, in wet to moist, marshy conditions. 

Photo credit: https://upload.wikimedia.org/wikipedia/commons/thumb/2/29/Thelypteris_palustris_Russia_2.jpg/640px-Thelypteris_palustris_Russia_2.jpg