About Physematium obtusum (Spreng.) Hook.
Common Name and General Distribution
Physematium obtusum, commonly known as the bluntlobe cliff fern, is a common rock fern found in Appalachia and eastern North America.
Substrate Preference
It grows best on calcareous substrate, though it can also grow in neutral soils.
Habitat Types
It can be found growing on rock faces or in scree.
Identification Characteristics
This species is often confused with different ferns from the genus Cystopteris, but can be distinguished by its hairy characteristics.
