Botany

Angiosperm Phylogeny Group

The Angiosperm Phylogeny Group (APG) is an informal international group of systematic botanists who collaborate to establish a consensus on the taxonomy of flowering plants (angiosperms) that reflects new knowledge about plant relationships discovered through phylogenetic studies. As of 2016, four incremental versions of a classification system have resulted from this collaboration, published in 1998, 2003, 2009, 2016 and 2026. An important motivation for the group was what they considered deficiencies in prior angiosperm classifications since they were not based on monophyletic groups (i.e., groups that include all the descendants of a common ancestor). APG publications are increasingly influential, with a number of major herbaria changing the arrangement of their collections to match the latest APG system.

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See also

• ▸Anthurium brownii
• ▸1935 Atlantic hurricane season
• ▸Hypochaeris radicata

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