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Synonymous with Athyrium thelypterioides (Michx.) Desv.
Rich, moist woods.
Nova Scotia and New Brunswick to Ontario and MN, south to GA, LA, and OK.
Perennial, deciduous, from a short-creeping rhizome. Leaves to 1.1 m, the blade longer than the petiole, 13-22 cm wide, sharply acuminate, slightly reduced below, pinnate-pinnatifid, rachis septate-hairy and sparsely scaly; pinnae 15-20, to 13 mm long and 6 mm wide; veins simple or forked, directed into the teeth; indusia 3-7 pairs, light brown (silvery when young), firm, spindle-shaped.
Spores mature late summer into autumn
Wetland Indicator: Facultative
Prefers undisturbed, mesic woods.
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.
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 © 2010