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Moist woods, restricted to mountain summits in the southern part of its range.
Labrador and Newfoundland to southern Quebec, western MA, NY, and PA, and southward in mountains to NC, TN, VA, and WV.
Deciduous from short, creeping rhizomes. Leaves monomorphic; petiole and rachis eglandular; blade 30-50 cm long, broadest just above the base, abruptly tapered to an acuminate tip; tripinnate-pinnatifid; basal pinnules on the upper and lower sides of the lowest pinna distinctly offset, 4-15 mm apart, the lower one mostly 3-5 times as long and twice as wide as the upper one; ultimate segments spinulose-toothed (spine-tipped); sori not marginal, midway between the midvein and the margins of the ultimate segments; indusia usually eglandular.
Sori produced June to December
Wetland indicator: FACU
Primarily a subalpine species in NY where these pictures were taken.
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
Montgomery, J.D. and Wagner, W.H. Jr. 1993. Dryopteris. In: Flora of North America North of
Mexico, Vol. 2. Oxford University Press, New York and Oxford.
USDA, NRCS. 2002. The PLANTS Database, Version 3.5 (http://plants.usda.gov).
National Plant Data Center, Baton Rouge, LA 70874-4490 USA.
Michael Hough © 2018