Cycadophyta
Fossil history.
The Cycad Pages
Extensive botanical database on the known cycads, including identification and classification, ecology and conservation, cycad evolution and the fossil record, geography and distribution, and horticultural information.
PACSOA - Cycads
Includes many articles, detailed species accounts, and images. From the Palm and Cycad Societies of Australia (PACSOA).
The Cycads: Fossils of the Past
An introduction.
Virtual Cycad Encyclopedia
Good source for information on Cycads. Includes taxonomy, biology, photos, links.
University of Georgia Greenhouses - Non-flowering Plants
Includes images of the cycad collection.
Introduction to the Cycads
An excellent place to begin learning about the Cycads
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