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.