Woodsia


Woodsia is a genus of ferns in the family Woodsiaceae. Species of Woodsia are commonly known as cliff ferns. In the Pteridophyte Phylogeny Group classification of 2016, it was the only genus in the family Woodsiaceae. In 2020, Physematium was split off from Woodsia on the basis of molecular phylogenetic evidence., Plants of the World Online continued to treat Physematium as a synonym of Woodsia.

Phylogeny

There are about 25–30 species of the genus Woodsia., World Ferns hosted at World Plants accepted the following species:
Some hybrids are also known:
  • Woodsia × gracilis Butters = W. alpina × W. ilvensis
  • Woodsia × tryonis B.Boivin = W. ilvensis × W. glabella
When the genus Physematium is accepted, × Woodsimatium abbeae is a hybrid between Woodsia ilvensis and Physematium scopulinum.