Flora of the Southeastern United States
2022 Edition

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CYSTOPTERIDACEAE

Cystopteris fragilis (Linnaeus) Bernhardi. Fragile Fern, Brittle Fern. Phen: Jun-Sep. Hab: Cliffs, ascending in our area to 1650 m. Dist: Circumboreal, in North America ranging from NL (Newfoundland) west to AK, south to MA, CT, NJ, montane NC, VA, w. OK, NM, and AZ; Central America.

Origin/Endemic status: Native

Syn: = FNA2, Il, K1, K3, K4, Meso1, NE, NY, Pa, W, Shmakov, Batkin, & Vaganov (2018); = Cystopteris fragilis var. fragilis – C, F, G, GrPl, Sf; < Cystopteris fragilis – WV

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image of plant© Dot Wilbur Brooks