About Cystopteris tennesseensis Shaver
Cystopteris tennesseensis Shaver is a lithophytic fern that grows on calcareous rock ledges, scree, and cliffs. It has creeping rhizomes, and occasionally produces misshapen bulbets. This species is part of the Cystopteris hybrid complex. It originated as an allotetraploid hybrid formed from two diploid parent species: C. bulbifera and C. protrusa. This fern is native to the eastern United States, where it occurs in Alabama, Arkansas, Georgia, Illinois, Indiana, Iowa, Kansas, Kentucky, Maryland, Missouri, North Carolina, Ohio, Oklahoma, Pennsylvania, Tennessee, Virginia, West Virginia, and Wisconsin.
