Introduction to the Ferns The ferns are an ancient lineage of plants, dating back to at least the Devonian. They include three living groups - Marattiales, Ophioglossales, and leptosporangiate ferns - as well as a couple of extinct groups. http://www.ucmp.berkeley.edu/plants/pterophyta/pteridopsida.html Berkeley.edu~Site InfoWhoisTrace RouteRBL Check
Leptosporangiate Ferns Next to the flowering plants, the leptosporangiate ferns are the most diverse group of living land plants. Estimates place their diversity at about 12,000 species in around 300 genera. This page is part of the tree of life phylogeny project. http://tolweb.org/tree?group=Leptosporangiate_Ferns&contgroup=Filicopsida Tolweb.org~Site InfoWhoisTrace RouteRBL Check
Pterophyta Introduction to the systematics of the ferns, with family descriptions and images. http://botit.botany.wisc.edu/courses/systematics/Phyla/Pterophyta/Pterophyta.html Wisc.edu~Site InfoWhoisTrace RouteRBL Check
Ferns of the Canberra Region A site about ferns in southeastern Australia, their ecology, how to grow them, information on ferns in general, with numerous photographs. http://www.home.aone.net.au/byzantium/ferns/ Aone.net.au~Site InfoWhoisTrace RouteRBL Check
American Fern Society Information on the biology and cultivation of ferns; activities of the society including a spore exchange and publication of Fiddlehead Forum, American Fern Journal, and Pteridologia. http://amerfernsoc.org/ Amerfernsoc.org~Site InfoWhoisTrace RouteRBL Check