Physematium is a genus of ferns in the family Woodsiaceae.

It was treated as a synonym of Woodsia until 2020 when a molecular phylogenetic study showed its distinctiveness.

[1] As of June 2023[update], Plants of the World Online continued to treat the genus as a synonym of Woodsia.

[2] As of June 2023[update], World Ferns accepted 20 species and two hybrids:[3]

This Polypodiales-related article is a stub.