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 (PPG I), 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. Species 
There are about 25–30 species of the genus Woodsia. , World Ferns hosted at World Plants accepted the following species:

Woodsia alpina (Bolton) Gray – alpine woodsia
Woodsia andersonii (Bedd.) Christ
Woodsia asiatica Kiselev & Shmakov
Woodsia calcarea (Fomin) Shmakov
Woodsia cinnamomea Christ
Woodsia cycloloba Hand.-Mazz. Woodsia glabella R.Br. – smooth cliff fern
Woodsia gorovoii Krestsch. & Shmakov
Woodsia guizhouensis P.S.Wang, Q.Luo & Li Bing Zhang
Woodsia hancockii Baker
Woodsia ilvensis (L.) R.Br. – oblong woodsia, rusty cliff fern
Woodsia kungiana Li Bing Zhang, N.T.Lu & X.F.Gao
Woodsia lanosa Hook. Woodsia macrochlaena Mett. ex Kuhn
Woodsia macrospora C.Chr. & Maxon
Woodsia nikkoensis H.Ogura & Nakaike
Woodsia oblonga Ching & S.H.Wu
Woodsia okamotoi Tagawa
Woodsia pilosa Ching
Woodsia polystichoides D.C.Eaton
Woodsia pseudopolystichoides (Fomin) Kiselev & Shmakov
Woodsia pulchella Bertol. Woodsia rosthorniana Diels
Woodsia shensiensis Ching
Woodsia sinica Ching
Woodsia subcordata Turcz. Woodsia taigischensis (Stepanov) Kuznetsov
Woodsia taishanensis F.Z.Li & C.K.Ni

Some hybrids are also known:
Woodsia × gracilis (G.Lawson) 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. References

 
Fern genera
Taxonomy articles created by Polbot