Dryopteris cristata (Linnaeus) A. Gray. Common name: Crested Woodfern. Phenology: Jul-Sep. Habitat: Bogs, swamp forests. Distribution: 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 ⓘ: = AqW, C, Can, FNA2, G, GrPl, Il, K4, Mo1, NE, NS, NY, Pa, POWO, RAB, S13, Sf, Tat, Tn, Va, W, WV, Montgomery & Paulton (1981); Polypodium cristatum L.; = Dryopteris cristata (L.) A.Gray var. cristata — F. Basionym: Polypodium cristatum L. 1753

Links to other floras: = Dryopteris cristata - FNA2

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Wetland Indicator Status:

• Atlantic and Gulf Coastal Plain: OBL
• Eastern Mountains and Piedmont: FACW
• Great Plains: OBL
• Midwest: OBL
• Northcentral & Northeast: OBL

Heliophily ⓘ: 5