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Cystopteris protrusa (Weatherby) Blasdell. Common name: Lowland Bladder Fern. Phenology: Apr-Jun. Habitat: Rich woods or on moss- and soil-covered talus in boulderfields, loess bluffs, occasionally on ledges of rock outcrops. Distribution: NY and ON west to MN, south to GA, Panhandle FL (Washington and Gadsden counties) (Wunderlin & Hansen 2006; L. Byrd, pers.comm., 2020), AL, MS, LA, e. TX, and OK.

Origin/Endemic status: Native

Taxonomy Comments: This species is a diploid involved in the reticulate evolution of Cystopteris in e. North America. It is one parent of C. tennesseensis and of C. tenuis. Its genome can be symbolized PP.

Synonymy ⓘ: = Ar, C, Can, ETx1, Fl1, FNA2, GrPl, Il, K4, Mo1, NE, NS, NY, Pa, POWO, RAB, Tn, TxFerns, Va, W, WH3, WV, Shmakov, Batkin, & Vaganov (2018); = Cystopteris fragilis (L.) Bernh. var. protrusa Weath. — F, G, Sf, Tat; < Cystopteris fragilis (L.) Bernh. — Tx; < Filix fragilis (L.) Underw. — S13. Basionym: Cystopteris fragilis (L.) Bernh. var. protrusa Weath. 1935

Links to other floras: = Cystopteris protrusa - FNA2

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Wetland Indicator Status:

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

Heliophily ⓘ: 2

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image of plant© Bruce A. Sorrie | Original Image ⭷
image of plant© Gary P. Fleming | Original Image ⭷
image of plant© Richard & Teresa Ware CC-BY-NC, permission granted to NCBG | Original Image ⭷
image of plant© Bruce A. Sorrie | Original Image ⭷

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Horticultural Information

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native range: eastern North America



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