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The APG IV system of flowering plant classification is the fourth version of a modern, mostly molecular-based, system of plant taxonomy for flowering plants (angiosperms) being developed by the Angiosperm Phylogeny Group (APG).
The APG system (Angiosperm Phylogeny Group system) of plant classification is the first version of a modern, mostly molecular-based, system of plant taxonomy. Published in 1998 by the Angiosperm Phylogeny Group , it was replaced by the improved APG II in 2003, APG III system in 2009 and APG IV system in 2016.
"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 (4): 399–436.
This template produces phylogenetic trees based on the Angiosperm Phylogeny Group IV (APG IV). [1] The whole system can be output as a large cladogram or sections can be selected for partial transclusion.
In several major drug classification systems, these four types of classifications are organized into a hierarchy. [4] For example, fibrates are a chemical class of drugs (amphipathic carboxylic acids) that share the same mechanism of action ( PPAR agonist ), the same mode of action (reducing blood triglyceride levels), and are used to prevent ...
Toggle Classification subsection. 1.1 APG system. 1.2 Earlier systems. ... This is an expansion from the APG system, of 1998, which used the same placement ...
The APG IV system of 2016 includes seven families. [2] As in the earlier APG III system , it was accepted that Olacaceae sensu lato was paraphyletic but new family limits were not proposed as relationships were considered uncertain.
The APG III system of 2009 dropped the option of keeping the three families separate, using only the expanded family, still under the name Xanthorrhoeaceae. [14] Anticipating a decision to conserve the name Asphodelaceae over Xanthorrhoeaceae (which came to pass in 2017), the APG IV system uses Asphodelaceae as the name for the expanded family ...