APG II system

A modern system of plant taxonomy, the APG II system of plant classification was published in 2003 by the Angiosperm Phylogeny Group, APG, in:Angiosperm Phylogeny Group (2003). An update of the Angiosperm Phylogeny Group classification for the orders and families of flowering plants: APG II. Botanical Journal of the Linnean Society 141: 399-436. (Available online: Abstract | Full text (HTML) | Full text (PDF))

The APG II system is the successor of the APG system. Each of these systems represents the broad consensus of a number of systematic botanists, united in the APG, working at several institutions worldwide. Continued development beyond APG II can be followed at the APG-companion site .

The APG II system has proven to be influential and has been adopted in whole or in part (sometimes with modifications) in a number of recent references.

Main groups in the system (all unranked clades):
*angiosperms :
*:magnoliids
*:monocots
*::commelinids
*:eudicots
*::core eudicots
*:::rosids
*::::eurosids I
*::::eurosids II
*:::asterids
*::::euasterids I
*::::euasterids II

In more detail (but excluding a dozen unplaced genera), with in the beginning of each listing some families or orders that are not placed in a further clade:
* clade angiosperms
*::: family Amborellaceae
*::: family Chloranthaceae
*::: family Nymphaeaceae [+ family Cabombaceae]
*:: order Austrobaileyales
*: clade magnoliids
*::: order Canellales
*::: order Laurales
*::: order Magnoliales
*::: order Piperales
*: clade monocots
*:::: family Petrosaviaceae
*::: order Acorales
*::: order Alismatales
*::: order Asparagales
*::: order Dioscoreales
*::: order Liliales
*::: order Pandanales
*::clade commelinids
*::::: family Dasypogonaceae
*:::: order Arecales
*:::: order Commelinales
*:::: order Poales
*:::: order Zingiberales
*: order Ceratophyllales
*: clade eudicots
*:::: family Buxaceae [+ family Didymelaceae]
*:::: family Sabiaceae
*:::: family Trochodendraceae [+ family Tetracentraceae]
*::: order Proteales
*::: order Ranunculales
*:: clade core eudicots
*::::: family Aextoxicaceae
*::::: family Berberidopsidaceae
*::::: family Dilleniaceae
*:::: order Gunnerales
*:::: order Caryophyllales
*:::: order Santalales
*:::: order Saxifragales
*::: clade rosids
*:::::: family Aphloiaceae
*:::::: family Geissolomataceae
*:::::: family Ixerbaceae
*:::::: family Picramniaceae
*:::::: family Strasburgeriaceae
*:::::: family Vitaceae
*::::: order Crossosomatales
*::::: order Geraniales
*::::: order Myrtales
*:::: clade eurosids I
*::::::: family Zygophyllaceae [+ family Krameriaceae]
*::::::: family Huaceae
*:::::: order Celastrales
*:::::: order Cucurbitales
*:::::: order Fabales
*:::::: order Fagales
*:::::: order Malpighiales
*:::::: order Oxalidales
*:::::: order Rosales
*:::: clade eurosids II
*::::::: family Tapisciaceae
*:::::: order Brassicales
*:::::: order Malvales
*:::::: order Sapindales
*::: clade asterids
*::::: order Cornales
*::::: order Ericales
*:::: clade euasterids I
*::::::: family Boraginaceae
*::::::: family Icacinaceae
*::::::: family Oncothecaceae
*::::::: family Vahliaceae
*:::::: order Garryales
*:::::: order Gentianales
*:::::: order Lamiales
*:::::: order Solanales
*:::: clade euasterids II
*::::::: family Bruniaceae
*::::::: family Columelliaceae [+ family Desfontainiaceae]
*::::::: family Eremosynaceae
*::::::: family Escalloniaceae
*::::::: family Paracryphiaceae
*::::::: family Polyosmaceae
*::::::: family Sphenostemonaceae
*::::::: family Tribelaceae
*:::::: order Apiales
*:::::: order Aquifoliales
*:::::: order Asterales
*:::::: order Dipsacales

Note: "+ ..." = optional segregrate family, that may be split off from the preceding family.