conifers.org: The Gymnosperm Database: natural history, botany and taxonomic information on conifers, cycads, ginkgo and related plants.
Description of Zamiaceae (Sago-palm family).
Description of the evolution, biology, distribution, ecology, and uses of the species in the conifer genus Thuja (arborvitae).
Description of Dioon ().
Description of the evolution, biology, distribution, ecology, and uses of the species in the conifer genus Cedrus (Cedars).
Description of the evolution, biology, distribution, ecology, and uses of Cathaya argyrophylla (Cathaya, 银杉).
Description of the evolution, biology, distribution, ecology, and uses of the species in the conifer genus Torreya (stinking-cedar).
Description of the evolution, biology, distribution, ecology, and uses of the species in the conifer genus Acmopyle, a genus of the Podocarpaceae native to Fiji and New Caledonia.
Description of the evolution, biology, distribution, ecology, and uses of the species in the conifer genus Libocedrus.
Description of the evolution, biology, distribution, ecology, and uses of the species in the conifer genus Keteleeria (油杉属).