brittle bladderfern
- kingdom: Plantae
- phylum: Tracheophyta
- class: Polypodiopsida
- order: Polypodiales
- family: Cystopteridaceae
- genus: Cystopteris
- species: Cystopteris tenuis
Truro
Nova Scotia
CanadaRockville
IndianaBrookmont
Cabin John
MarylandBorough of Bronx
New YorkCleves
Miami Heights
OhioGreat Falls
McLean
VirginiaPhilippi
West Virginia
United States