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 Algae
Equisetaceae
Ferns
Lycopodiatae
Bryophytes (Bryophyta)
Mycology
Myxomycota
- Cryptogams in Depth - Cryptogams in Depth is primarily a photographic site. Current gallery offerings include "Mushrooms and other Basidiomycota," "Cup Fungi, Morels and other Ascomycota," "Lichens," "Mosses and Liverworts," and "Slime Molds." Stereopairs are used to illustrate how the plants really look, using "pye-eyed" and "anaglyph" (red-blue) images.
- Farnpflanzen (Pteridophyta) - Einführung in die Familie.
- Ferns and Allies (Filicinophyta) - Text and Images.
- List of Images of Pteridophyta
- Non-Flowering Plant Family Access Page (University of Hawaii)
- Pterophyta (Ohio State University) - Text and Images.
- Pteridophyta (Farnartige Pflanzen) - Text, Abbildungen, Systematik.
- Pteridophyta (Farnähnliche Pflanzen und Farne) (Botanik Online) - Rhyniatae, Zosterophyllatae, Trimerophytatae, Lycopodiatae (= Lycopsida; Bärlappgewächse), Equisetatae (= Sphaenopsida; Schachtelhalme), Psilotatae (= Psilotopsida), Filicatae (= Pteropsida; Farne)
- Pteridophyta (Farnpflanzen) (Universität Greifswald) - Text und Systematik.
- Pteridophytes - an Overview.
- Vascular Cryptogams (Humboldt State University) - Text.
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