Cystopteris tennesseensis, commonly known as the Tennessee fragile fern or Tennessee bladderfern, is a species of fern in the family Cystopteridaceae.

[1][2] Cystopteris tennesseensis is a lithophytic fern, growing on calcareous rock ledges, scree, and cliffs.

It has creeping rhizomes, and occasionally has misshappen bulbets.

It originated as an allotetraploid hybrid between two diploid parents, C. bulbifera × C.

[1] The fern is native to the eastern United States.