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A modern system of plant taxonomy, the APG II system of plant classification was published in April of 2003 by the Angiosperm Phylogeny Group, APG, in
The APG II system was the successor of the APG system, which was published in the Annals of the Missouri Botanical Garden in the autumn of 1998. Each of these systems represented the broad consensus of a number of systematic botanists, united in the APG, working at several institutions worldwide. The APG II system recognized 45 orders, five more than the APG system. It also recognized 457 families, five fewer than the APG system. Thirty-five of the APG II families were not placed in any order. The APG II system was influential and was adopted in whole or in part (sometimes with modifications) in a number of references. It was superseded by the APG III system, published in October of 2009. Main groups in the system (all unranked clades between the ranks of class and order):
Shown below is the classification in full detail, except for the fifteen genera and three families that were unplaced in APG II. The unplaced taxa were listed at the end of the appendix in a section entitled "Taxa of Uncertain Position". Under some of the clades are listed the families that were placed incertae sedis in that clade. Thirty-two families were so placed. This means that their relationship to other members of the clade is not known.
Note: "+ ..." = optional segregrate family, that may be split off from the preceding family. [edit] Cladogram |
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