Scientific name: WoodsiaceaeEnglish name: Vietnamese name: Ráng gỗ nhỏOther name:
The Woodsiaceae or cliff ferns is a family of ferns in the Eupolypods II clade of the order Polypodiales, in the class Polypodiopsida. It contains the three genera Cheilanthopsis, Hymenocystis, and Woodsia. However, the first two are very similar to Woodsia and may be merged into it at some point.
Woodsiaceae formerly included the members of the families Athyriaceae and Diplaziopsidaceae, but analysis has consistently shown that they should be treated as separate families. The following diagram for the eupolypods II, based on Lehtonen, 2011, and Rothfels & al., 2012, shows a likely phylogenic relationship between the Woodsiaceae and the other families of the eupolypods II clade