- Conifer Central - Resources, evaluation, books, nursery sources, description, and identification. Includes original keys to major coniferous genera.
members.tripod.com/~Hatch_L/concent.html
- 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.
www.conifers.org
- Gymnosperms - General introduction to the gymnosperms, the group of vascular plants whose seeds are not enclosed by a ripened ovary (fruit).
www.geocities.com/Heartland/Plains/6761/ecycads.htm
- Native Conifers of North America - Key, descriptions of all genera and species, images, and range maps.
www.nearctica.com/trees/conifer
- Phylum Pinophyta: The Conifers - General description with photos of selected representatives of the included families and genera.
www.science.siu.edu/landplants/Coniferophyta/coniferophyta.html
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