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Flowering Plant Gateway - http://www.csdl.tamu.edu/FLORA/newgate/cronang.htm
Various paths for exploration or comparison of four major flowering plant classification systems (Cronquist, Takhtajan, Thorne and the Angiosperm Phylogeny Group system). From Texas A&M University. |
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Angiosperm Phylogeny - http://www.mobot.org/MOBOT/Research/APweb/
Phylogenetic trees, technical descriptions of all orders and families, references, and links. By Peter Stevens of the Missouri Botanical Garden. |
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The Families of Flowering Plants - http://delta-intkey.com/angio/
A taxonomical database with descriptions and illustrations of each family, and an interactive key to families. |
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Angiosperms - http://tolweb.org/Angiosperms/20646
Photographs and information on flowering plants from the Tree of Life web project. |
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OSU Seed Biology Program - SeedID Index - http://www.ag.ohio-state.edu/~seedbio/seed_id/index.html
Photographs of the seeds of selected plants. |