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.
Photographs of the seeds of selected plants.
Phylogenetic trees, technical descriptions of all orders and families, references, and links. By Peter Stevens of the Missouri Botanical Garden.
Extensive collection, organized by family.
A taxonomical database with descriptions and illustrations of each family, and an interactive key to families.
|