Ferns and Fern Allies of the Northwoods - Northern Minnesota and neighbouring areas. Species list with images and commentary of 29 taxa. www.rook.org/earl/bwca/nature/ferns/index.html
Ferns Around Washington, DC - A collection of images and information on ferns growing in the states around Washington. members.aol.com/palmferndc/ferns/index.html
Ferns et al of New England and Bermuda - Lists all native pteridophyte species and some hybrids, with photographs of most and data pages for some. theworld.com/~donlubin
Ferns for Florida - University of Florida, Institute of Food and Agricultural Sciences (UF/IFAS) publication on fern propagation and culture. edis.ifas.ufl.edu/scripts/htmlgen.exe?DOCUMENT_MG032
Ferns of North Central Florida - Checklist of ferns and fern allies with common names. www.flmnh.ufl.edu/natsci/herbarium/locfl/locffern.htm
Flora of the Carolinas and Virginia - Artificial keys to the ferns and fern allies. metalab.unc.edu/unc-biology/herbarium/weakley/Ferns.html
New and old lip-ferns of Oregon - Illustrated article about the genus Cheilanthes in Oregon. www.oregonflora.org/ofn/v7n1/lip_ferns.html
Pteridophytes in the USA - List of taxa with links to checklist references, images and distribution maps www.csdl.tamu.edu/FLORA/cgi/b98_list?group=p
Staghorn Ferns for Florida - University of Florida, Institute of Food and Agricultural Sciences (UF/IFAS) leaflet on the culture of Platycerium spp. edis.ifas.ufl.edu/scripts/htmlgen.exe?DOCUMENT_MG015
