lowland bladderfern
- kingdom: Plantae
- phylum: Tracheophyta
- class: Polypodiopsida
- order: Polypodiales
- family: Cystopteridaceae
- genus: Cystopteris
- species: Cystopteris protrusa
Florence
Northport
Sheffield
Tuscaloosa
AlabamaMishawaka
IndianaCabin John
Maryland
United States