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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 current APG IV classification represents a slight change from the APG I system of 1998, which firmly did accept family Platanaceae as being separate from the order. Under APG IV, this is the current circumscription of the order: order Proteales; family Nelumbonaceae; family Platanaceae; family Proteaceae; family Sabiaceae
The drug or other substance has a currently accepted medical use in treatment in the United States. Abuse of the drug or other substance may lead to limited physical dependence or psychological dependence relative to the drugs or other substances in schedule III. The complete list of Schedule IV substances is as follows.
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.
The APG III system places the order within the eurosids; this is corroborated by the placement of the Myrtales in the Malvid clade by the One Thousand Plant Transcriptomes Initiative. [3] Myrtales are placed as a sister to the eurosids II clade as of the publishing of the Eucalyptus grandis genome in June 2014. [4]
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 from 2016 classifies the Boraginaceae as single family of the order Boraginales within the asterids. [5] Under the older Cronquist system , it was included in the Lamiales, but clearly is no more similar to the other families in this order than it is to families in several other asterid orders.
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 ...