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Dryopteris cristata (Linnaeus) A. Gray. Crested Woodfern. Phen: Jul-Sep. Hab: Bogs, swamp forests. Dist: Circumboreal, in North America from NL (Newfoundland) to s. SK and se. BC, south to NC, TN, OH, IN, n. IL, IA, NE, and ID; disjunct in c. GA.

Origin/Endemic status: Native

Taxonomy Comments: This species is a fertile allotetraploid derived from hybridization of D. ludoviciana and "D. semicristata", a hypothetical species which may be extinct. Its chromosome complement is symbolized LLSS. It has also served as a "parent species" of D. clintoniana, a fertile allohexaploid derived from D. cristata × goldiana. Thus, its genome constitutes two thirds of the genome of D. clintoniana.

Synonymy: = C, FNA2, G, GrPl, Il, K1, K3, K4, Mo1, NE, NY, Pa, RAB, S13, Sf, Tat, Tn, Va, W, WV, Montgomery & Paulton (1981); = Dryopteris cristata (L.) A.Gray var. cristata – F

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image of plant© Alan M. Cressler | Original Image ⭷
image of plant© Alan M. Cressler | Original Image ⭷