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The Angiosperm Phylogeny Group usually defines Cornaceae as comprising the genera Cornus and Alangium as well as the five genera often separated into the family Nyssaceae.
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Angiosperm and Phylogeny
The Angiosperm Phylogeny Group system ( APG ) of 1998 and APG II ( 2003 ) assigned the Alismatales to the monocots, which may be thought of as an unranked clade containing the families listed below.
Successive revisions of the influential Angiosperm Phylogeny Group ( APG ) classification have changed the circumscription of the family.
* ( 2003 ): An update of the Angiosperm Phylogeny Group classification for the orders and families of flowering plants: APG II.
In 1998 the Angiosperm Phylogeny Group published a phylogeny of flowering plants based on an analysis of DNA sequences from most families of flowering plants.
* Angiosperm Phylogeny Group: An update of the Angiosperm Phylogeny Group classification for the orders and families of flowering plants: APG III.
Under the more recent Angiosperm Phylogeny Group ( APG II ) system, the circumscription of the order is much the same but the families are circumscribed differently.
It is included in the rosid group of the eudicots in the Angiosperm Phylogeny Group II classification system.
This expanded circumscription of Malvaceae has been recognized in the most recent version of the Thorne system, by the Angiosperm Phylogeny Group, and in the most recent comprehensive treatment of vascular plant families and genera, the Kubitzki system ( Bayer and Kubitzki, 2003 ).
In order to make a clear break with classification systems being used at that time, the Angiosperm Phylogeny Group resurrected Hutchinson's name, even though his concept of Malpighiales included much of what is now in Celastrales and Oxalidales.
The order Rosales is strongly supported as monophyletic in phylogenetic analyses of DNA sequences, such as those carried out by members of the Angiosperm Phylogeny Group.
The following families are included here in newer systems such as that of the Angiosperm Phylogeny Group ( APG ):
An example of a modern classification is the one published in 2009 by the Angiosperm Phylogeny Group for all living flowering plant families ( the APG III system ).
Recent genetic research by the Angiosperm Phylogeny Group has shown the duckweeds, previously treated in a separate family Lemnaceae, also belong in the Araceae family.
The family was placed in the Rosid clade, but not classified in an order, by the Angiosperm Phylogeny Group ( APG ).
Leea, sometimes classified in its own family, Leeaceae, is included in Vitaceae by the APG and the Angiosperm Phylogeny Web.
Angiosperm and Group
Formerly treated as the only genus in the family Cuscutaceae, recent genetic research by the Angiosperm Phylogeny Group has shown that it is correctly placed in the morning glory family, Convolvulaceae.
A number of traditionally accepted families, including ( Dialypetalanthaceae, Henriqueziaceae, Naucleaceae, and Theligonaceae ) are now included in Rubiaceae following molecular phylogenetic research by the Angiosperm Phylogeny Group.
The circumscription recognized by the Angiosperm Phylogeny Group ( APG ) includes Apocynaceae ( including Asclepiadaceae ), Gelsemiaceae ( segregated from Loganiaceae ), Gentianaceae ( including Saccifoliaceae ), Loganiaceae, and Rubiaceae.
The order is not recognized by the Angiosperm Phylogeny Group ; the family Hydrostachyaceae is placed in the order Cornales and the plants making up the other two families are included in the family Plantaginaceae.
Angiosperm and usually
Avicennia, a genus of mangrove tree, usually placed in Verbenaceae or in its own family, Avicenniaceae, is included in Acanthaceae by the Angiosperm Phylogeny Group on the basis of molecular phylogenetic studies that show it to be associated with this family.
Angiosperm and Cornaceae
The Angiosperm Phylogeny Group currently ( 2009 ) includes the genera of Nyssaceae within Cornaceae, but this classification remains unstable.
It is the sole genus in the family Griseliniaceae ; in the past it was often placed in the Cornaceae ( dogwood family, order Cornales ), but differs from that in many features ; recent genetic evidence from the Angiosperm Phylogeny Group has shown that it is correctly placed in the Apiales.
Angiosperm and genera
Monocot classification has undergone considerable revision in recent years, and some newer systems, including the Angiosperm Phylogeny Group's APG III classification system, have assigned many of these genera to different families based on genetic relationships.
In its broad sense ( as treated by the Angiosperm Phylogeny Group ), the family includes 17 genera, but some botanists divide the family into two, with seven genera split off into a separate family, Philadelphaceae.
Recent genetic studies summarized by the Angiosperm Phylogeny Group has greatly expanded the circumscription of the family to contain 55 genera.
The family was formerly sometimes treated to include the hackberries, ( Celtis and allies ), but analysis by the Angiosperm Phylogeny Group members suggests that these genera are better placed in the related family Cannabaceae.
Some authors, including the Angiosperm Phylogeny Group, consider Abelia and related genera to belong instead in the segregate family Linnaeaceae, also including such genera as Linnaea, Abelia, Dipelta, Kolkwitzia, and Zabelia, but not such others as Lonicera or Symphoricarpos, included by them instead in a more narrowly viewed Caprifoliaceae.
Angiosperm flora colonized New Zealand and New Caledonia during the Cretaceous with genera such as Nothofagus, Forgesia, and Polyosma.
Recent genetic research by the Angiosperm Phylogeny Group has however demonstrated that these genera are all better placed in the family Ericaceae.
Much later, the genera Sambucus ( elders ) and Viburnum were added after careful morphological analysis of biochemical tests by the Angiosperm Phylogeny Group.
Recent genetic research by the Angiosperm Phylogeny Group has however demonstrated that these genera are better placed in the blueberry family, the Ericaceae, in which they are now treated as a subfamily, the Monotropoidiae.
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