Thelypteris noveboracensis

Thelypteris noveboracensis, the New York fern, is a fern found throughout the eastern United States and Canada. It is distinctive by its pinnae tapering to the base of the frond, and by its forming extensive clonal colonies on ridgetops and mountain benches. The only other native species in this area with similarly tapering pinnae is the ostrich fern, Matteuccia struthiopteris, which generally grows in riparian habitats. The only other species that forms as extensive clonal colonies is the hay-scented fern, Dennstaedtia punctilobula.