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National Park Service
U.S. Department of the Interior

NPSpecies - Park Species Profile


Cystopteris protrusa
Southern Fragile Fern
Fort Donelson National Battlefield
			Record Status: Approved
Occurrence:	Present
Nativeness:	Native
Abundance:	Uncommon

Scientific Name with Authority:		Cystopteris protrusa (Weath.) Blasdell
Park Preferred Common Name(s):		Southern Fragile Fern
Park Synonyms:

Taxonomic Hierarchy:		Kingdom Plantae, Phylum Tracheophyta, Subphylum Polypodiophytina, Subclass Polypodiidae, Order Polypodiales, Suborder Aspleniineae, Family Cystopteridaceae, Genus Cystopteris, Species Cystopteris protrusa


Park Tags:
ParkTag -


Threatened/Endangered Status:
State Species of Concern Status:
Ozone-sensitive Status:
NatureServe Global Rank:		G5
NatureServe State Rank:		TN: SNR
Evidence:		1 Observations, 1 Vouchers, 3 Data Store References, 0 External Links


Other Parks Where Species is Listed:
Abraham Lincoln Birthplace National Historical Park	Antietam National Battlefield
Blue Ridge Parkway	Bluestone National Scenic River
Buffalo National River	Catoctin Mountain Park
Chesapeake and Ohio Canal National Historical Park	Cumberland Gap National Historical Park
Cuyahoga Valley National Park	Delaware Water Gap National Recreation Area
Fort Washington Park	Friendship Hill National Historic Site
George Washington Memorial Parkway	Great Falls Park
Great Smoky Mountains National Park	Hot Springs National Park
Indiana Dunes National Park	Mammoth Cave National Park
Manassas National Battlefield Park	Natchez Trace Parkway
New River Gorge National Park and Preserve	Obed Wild and Scenic River
Ozark National Scenic Riverways	Piscataway Park
Prince William Forest Park	Rock Creek Park
Russell Cave National Monument	Shenandoah National Park
Shiloh National Military Park	Thomas Stone National Historic Site
Valley Forge National Historical Park	Vicksburg National Military Park


Last Modified Date:	9/27/2007

NPSpecies - The National Park Service biodiversity database. IRMA Portal version.https://irma.nps.gov/npspecies. Accessed 10/1/2025 6:22:31 AM

NatureServe Global Rank and State Rank

NatureServe. 2017. NatureServe Web Service. Arlington, VA. U.S.A. Available http://services.natureserve.org. Accessed: 12/4/2017. Updated quarterly.

This information is provided by NatureServe (www.natureserve.org) and its network of natural heritage member programs, a leading source of information about rare and endangered species, and threatened ecosystems.


Species Profile	Page 1 of 1	10/1/2025 6:22:31 AM

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