Introduction to the Pteridophytes
An illustrated introduction to the ferns and fern allies for undergraduate students.

Field Systematic Botany - Pteridophytes: an Overview
A detailed introduction to the 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.

Pteridophytes: the Ferns and their Allies
A classification of the ferns and their allies - a work in progress at the Australian National Herbarium.

British Pteridological Society
Images and information about ferns and other pteridophytes; activities of the society including publication of the Fern Gazette, Pteridologist, and Bulletin.

Pteridophytes
West Indian type specimens in the herbarium of the New York Botanical Garden.

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.

Images of Pteridophyta
Part of the W3Tropicos database at the Missouri Botanical Garden.

Natural Perspective - Ferns and Allies (Filicinophyta)
Brief introduction.

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.