Atlas of Tennessee Vascular Plants
- Distribution map for Dennstaedtia punctilobula.
- http://tenn.bio.utk.edu/vascular/database/vascular-database.asp?CategoryID=Pteridophytes&FamilyID=Dennstaedtiaceae&GenusID=Dennstaedtia&SpeciesID=punctilobula

Dennstaedtia punctiloba
- Information sheet for hay-scented fern from Extension at Michigan State University.
- http://www.msue.msu.edu/msue/imp/modzz/00000502.html

Dennstaedtia punctilobula
- Image, description, and culture information.
- http://pss.uvm.edu/pss123/ferdenst.html