Additional
Information: For sites about both ferns (Polypodiophyta) and their allies: horestails (Equisetophyta), club mosses (Lycopodiophyta), and whisk-ferns (Psilotophyta).
Images of Pteridophyta Images of Pteridophyta: Part of the W3Tropicos database at the Missouri Botanical Garden. (Pteridophyta) http://mobot.mobot.org/Pick/Search/image/iix0.html
Introduction to the Pteridophytes Introduction to the Pteridophytes: An illustrated introduction to the ferns and fern allies for undergraduate students. (Pteridophyta) http://scitec.uwichill.edu.bb/bcs/bl14apl/pter1.htm
Checklist of World Ferns Checklist of World Ferns: A compiled list of the ferns and fern allies of the world, with full botanical names, information about where they are found, and their classification. (Pteridophyta) http://homepages.caverock.net.nz/~bj/fern/
Australian National Herbarium Fern Pages Australian National Herbarium Fern Pages: Comprehensive information about the taxonomy and distribution of Australian region ferns and allies as well at general information about pteridophytes. (Pteridophyta) http://www.anbg.gov.au/projects/fern/
Field Systematic Botany - Pteridophytes: an Overview Field Systematic Botany - Pteridophytes: an Overview: A detailed introduction to the ferns and fern allies. (Pteridophyta) http://www.csdl.tamu.edu/FLORA/fsb/fsbfern1.htm
Pteridophytes: the Ferns and their Allies Pteridophytes: the Ferns and their Allies: A classification of the ferns and their allies - a work in progress at the Australian National Herbarium. (Pteridophyta) http://www.anbg.gov.au/projects/fern/taxa/classification.html
Pteridophytes Pteridophytes: West Indian type specimens in the herbarium of the New York Botanical Garden. (Pteridophyta) http://www.nybg.org/bsci/hcol/wivasc/Pteridophyte.html
Pteridophytes: Ferns and Fern Allies Pteridophytes: Ferns and Fern Allies: Personal site with a classification scheme, bibliography, some local checklists (Ohio and Kentucky), and an article on ferns and soil conservation. (Pteridophyta) http://www.frognet.net/~jaknouse/ferns.htg/ferns.html
British Pteridological Society British Pteridological Society: Images and information about ferns and other pteridophytes; activities of the society including publication of the Fern Gazette, Pteridologist, and Bulletin. (Pteridophyta) http://www.nhm.ac.uk/hosted_sites/bps/
Additional
Information: For sites about both ferns (Polypodiophyta) and their allies: horestails (Equisetophyta), club mosses (Lycopodiophyta), and whisk-ferns (Psilotophyta).
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