Physematium obtusum, the bluntlobe cliff fern,[2] is a common rock fern of Appalachia and eastern North America. It prefers a calcareous substrate, but also grows in neutral soils. It may grow on rock faces or in scree.
| Physematium obtusum | |
|---|---|
| |
Scientific classification 
| |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Division: | Polypodiophyta |
| Class: | Polypodiopsida |
| Order: | Polypodiales |
| Suborder: | Aspleniineae |
| Family: | Woodsiaceae |
| Genus: | Physematium |
| Species: | P. obtusum
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| Binomial name | |
| Physematium obtusum (Spreng.) Torr.
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This fern is often confused with various ferns of the genus Cystopteris but is distinguished by its hairy nature.
References
edit- ^ NatureServe (November 1, 2024). "Woodsia obtusa". NatureServe Explorer. Arlington, Virginia. Retrieved November 17, 2024.
- ^ NRCS. "Woodsia obtusa". PLANTS Database. United States Department of Agriculture (USDA). Retrieved 7 August 2015.
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