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American Fern Society - http://amerfernsoc.org/
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. |
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Introduction to the Ferns - http://www.ucmp.berkeley.edu/plants/pterophyta/pteridopsida.html
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. |
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Fern Siam - http://www.fernsiam.com/
Images, taxonomic information, online forum, and other resources about ferns in Thailand. Mostly in Thai language, with some English. |
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Filicopsida - http://tolweb.org/tree?group=Filicopsida&contgroup=Embryophytes
Introduction to ferns from the Tree of Life project. |
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Ferns of the Canberra Region - http://www.home.aone.net.au/byzantium/ferns/
A site about ferns in southeastern Australia, their ecology, how to grow them, information on ferns in general, with numerous photographs. |