Phylogenetic trees symbolize evolution. This tree approximates the APG III classification of flowering plants and highlights the positions of the caffeine-containing genera. To get a well-resolved picture of the taxonomic tree click onto the tree in the logo at the left.
The visitor that would have the fruit or flower must climb the tree
When hovering over the colored tree illustration, you will see the clades of the plant kingdom. They are ramified and named up to the orders showing that among them only five hold 'caffeine genera': Ericales, Aquifoliales, Gentianales, Sapindales, and Malvales.
Along with the classical genera
The Caffeine Tree
The 'Caffeines'
The
Caffeine Plants
