About Physematium obtusum subsp. obtusum
Common Name and Distribution
Physematium obtusum, commonly known as the bluntlobe cliff fern, is a common rock fern found in Appalachia and eastern North America.
Preferred Substrate
It grows best on calcareous substrate, but can also grow in neutral soils.
Growth Habitats
It may grow on rock faces or in scree.
Similar Species and Distinguishing Feature
This fern is often confused with various ferns belonging to the genus Cystopteris, but can be distinguished by its hairy texture.
