APG II system

The APG II system (Angiosperm Phylogeny Group II system) of plant classification is the second, now obsolete, version of a modern, mostly molecular-based, system of plant taxonomy that was published in April 2003 by the Angiosperm Phylogeny Group.

Thirty-nine of the APG II families were not placed in any order, but 36 of the 39 were placed in a supra-ordinal clade within the angiosperms.

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It was superseded 6½ years later by the APG III system, published in October 2009.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.