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Term Definition
APG (Angiosperm Phylogeny Group) The organization responsible for coordinating a new classification of the Angiosperms based on anatomical, morphological, chemical, and, most importantly, molecular data. Their most recent classification is found on the Angiosperm Phylogeny Website at http://www.mobot.org/mobot/research/apweb/.
Phylogeny A hypothesis about the evolutionary the relationships within groups of organisms. Phylogenies are based on a series of three taxon statements that address the question "Are taxa A and B more closely related than either is to taxon C.