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Angiosperm phylogeny based on Stevens [9], modified (http://www.mobot.org/MOBOT/research/APweb/welcome.html). Important model systems and the proposed model, Aristolochia fimbriata, are shown next to the corresponding clade. Liriodendron, Persea, Populus, and Carica are tree species. Species that have been used as flower development models are indicated with an asterisk.
