Dryopteris marginalis (L.) A.Gray
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.
Species Description - Rhizome ascending to erect; lvs firm, evergreen; petiole 1–2 dm, with a tuft of slender, concolorous, pale reddish-brown scales at the base and smaller, scattered scales above; blade lance-oblong, (2–)3–4.5 × 1–2.5 dm, broadest just above the base, glabrous but with a few hair-like scales, pinnate-pinnatifid to bipinnate, with 15–20 pairs of pinnae, the larger pinnae with mostly 10–15(–18) pairs of segments, the larger segments mostly (0.7–)1–2(–2.5) cm, with 6–9 pairs of veins; sori submarginal, near the sinuses between the teeth; 2n=82. Woods and talus-slopes; Nf. to S.C. and Ga., w. to s. Ont., Minn., Kans., and Okla.