APG IV system

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).

[1] Compared to the APG III system, the APG IV system recognizes five new orders (Boraginales, Dilleniales, Icacinales, Metteniusales and Vahliales), along with some new families, making a total of 64 angiosperm orders and 416 families.

[1] In general, the authors describe their philosophy as "conservative", based on making changes from APG III only where "a well-supported need" has been demonstrated.

This has sometimes resulted in placements that are not compatible with published studies, but where further research is needed before the classification can be changed.

[4] Amborellales Nymphaeales Austrobaileyales Chloranthales Magnoliales Laurales Piperales Canellales Acorales Alismatales Petrosaviales Pandanales Dioscoreales Liliales Asparagales Arecales Poales Commelinales Zingiberales Ceratophyllales Ranunculales Proteales Trochodendrales Buxales (continued) Gunnerales Dilleniales Saxifragales Vitales Zygophyllales Fabales Rosales Fagales Cucurbitales Celastrales Malpighiales Oxalidales Geraniales Myrtales Crossosomatales Picramniales Sapindales Huerteales Brassicales Malvales Berberidopsidales Santalales Caryophyllales Cornales Ericales Aquifoliales Asterales Escalloniales Bruniales Apiales Dipsacales Paracryphiales Icacinales Metteniusales Garryales Boraginales Gentianales Vahliales Lamiales Solanales