Thelypteris noveboracensis (L.) Nieuwl. - New York Fern


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Thelypteris noveboracensis - (image 1 of 4)



Family: Thelypteridaceae


Swink & Wilhelm use the name Dryopteris noveboracensis (L.) A. Gray. Has also been included in the genus Aspidium by some authors.


Mixed woods and wet-mesic swamps.




Newfound west to Ontario and southeast WI, south to GA, AL, and AR.


Deciduous fern from a slender, mostly glabrous rhizome. Leaves to 90 cm long and 15 cm wide. Leaf blades lance-elliptic, acuminate, pinnate-pinnatifid, gradually tapering to the base; pinnae many pairs, sessile, lance-linear, to 15 mm wide, the lowest pinnae strongly reduced and less than 1.3 cm long; rachis, costa, and veiens hairy, without scales; veins simple or some forked; indusium pale, long-ciliate, attached at one side of the sorus.


Spores July to October

Wetland indicator: Facultative +

Considered to be an undesirable forest species by some land managers in the northeast. Seems to increase in abundance where deer populations are high.


Gleason, Henry A. and A. Cronquist. 1991. Manual of Vascular Plants of Northeastern United States and Adjacent Canada. Second Ed.

The New York Botanical Garden. Bronx, NY


Swink, F. and G. Wilhelm. 1994. Plants of the Chicago Region.
Indiana Academy of Science. The Morton Arboretum. Lisle, Illinois.




 Michael Hough 2009