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Gymnosperms
General introduction to the gymnosperms, the group of vascular plants whose seeds are not enclosed by a ripened ovary (fruit).
http://www.geocities.com/Heartland/Plains/6761/ecycads.htm
Gymnosperm Database
Basic information (sometimes only a name) for all species and higher-ranked taxa of the gymnosperms, including conifers, cycads, and their allies. Includes many images.
http://www.conifers.org/
Phylum Pinophyta: The Conifers
General description with photos of selected representatives of the included families and genera.
http://www.science.siu.edu/landplants/Coniferophyta/coniferophyta.html
Conifer Central
Resources, evaluation, books, nursery sources, description, and identification. Includes original keys to major coniferous genera.
http://members.tripod.com/~Hatch_L/concent.html
Native Conifers of North America
Key, descriptions of all genera and species, images, and range maps.
http://www.nearctica.com/trees/conifer/
Arboretum de Villardebelle
Includes photographs and information on conifers from around the world, gymnosperm taxonomy, and scientific articles.
http://www.pinetum.org/
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