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). It was published in 2016, seven years after its predecessor the APG III system was published in 2009, and 18 years after the first APG system was published in 1998.^[1] In 2009, a linear arrangement of the system was published separately;^[2] the APG IV paper includes such an arrangement, cross-referenced to the 2009 one.^[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.^[3]

Short version

Detailed version

Key to symbols used:

* = the family has been added or its circumscription changed since the APG III system of 2009

† = the order has been added since the APG III system

Basal angiosperms

• Amborellales Melikyan et al.
  • Amborellaceae Pichon, nom. cons.
• Nymphaeales Salisb. ex Bercht. & J.Presl
  • Hydatellaceae U.Hamann
  • Cabombaceae Rich. ex A.Rich., nom. cons.
  • Nymphaeaceae Salisb., nom. cons.
• Austrobaileyales Takht. ex Reveal
  • Austrobaileyaceae Croizat, nom. cons.
  • Trimeniaceae Gibbs, nom. cons.
  • Schisandraceae Blume, nom. cons.

Magnoliids

• Canellales Cronq.
  • Canellaceae Mart., nom. cons.
  • Winteraceae R.Br. ex Lindl., nom. cons.
• Piperales Bercht. & J.Presl
  • Saururaceae Rich. ex T.Lestib., nom. cons.
  • Piperaceae Giseke, nom. cons.
  • Aristolochiaceae Juss., nom. cons. * (including Asaraceae Vent., Hydnoraceae C.Agardh, nom. cons., Lactoridaceae Engl., nom. cons.)
• Magnoliales Juss. ex Bercht. & J.Presl
  • Myristicaceae R.Br., nom. cons.
  • Magnoliaceae Juss., nom. cons.
  • Degeneriaceae I.W.Bailey & A.C.Sm., nom. cons.
  • Himantandraceae Diels, nom. cons.
  • Eupomatiaceae Orb., nom. cons.
  • Annonaceae Juss., nom. cons.
• Laurales Juss. ex Bercht. & J.Presl
  • Calycanthaceae Lindl., nom. cons.
  • Siparunaceae Schodde
  • Gomortegaceae Reiche, nom. cons.
  • Atherospermataceae R.Br.
  • Hernandiaceae Blume, nom. cons.
  • Monimiaceae Juss., nom. cons.
  • Lauraceae Juss., nom. cons.

Independent lineage: unplaced to more inclusive clade

• Chloranthales Mart.
  • Chloranthaceae R.Br. ex Sims, nom. cons.

Monocots

• Acorales Mart.
  • Acoraceae Martinov
• Alismatales R.Br. ex Bercht. & J.Presl
  • Araceae Juss., nom. cons.
  • Tofieldiaceae Takht.
  • Alismataceae Vent., nom. cons.
  • Butomaceae Mirb., nom. cons.
  • Hydrocharitaceae Juss., nom. cons.
  • Scheuchzeriaceae F.Rudolphi, nom. cons.
  • Aponogetonaceae Planch., nom. cons.
  • Juncaginaceae Rich., nom. cons. *
  • Maundiaceae Nakai *
  • Zosteraceae Dumort., nom. cons.
  • Potamogetonaceae Bercht. & J.Presl, nom. cons
  • Posidoniaceae Vines, nom. cons.
  • Ruppiaceae Horan., nom. cons.
  • Cymodoceaceae Vines, nom. cons.
• Petrosaviales Takht.
  • Petrosaviaceae Hutch., nom. cons.
• Dioscoreales Mart.
  • Nartheciaceae Fr. ex Bjurzon
  • Burmanniaceae Blume, nom. cons. (not monophyletic.)
  • Dioscoreaceae R.Br., nom. cons.
• Pandanales R.Br. ex Bercht. & J.Presl
  • Triuridaceae Gardner, nom. cons.
  • Velloziaceae J.Agardh, nom. cons.
  • Stemonaceae Caruel, nom. cons.
  • Cyclanthaceae Poit. ex A.Rich., nom. cons.
  • Pandanaceae R.Br., nom. cons.
• Liliales Perleb
  • Campynemataceae Dumort.
  • Corsiaceae Becc., nom. cons.
  • Melanthiaceae Batsch ex Borkh., nom. cons.
  • Petermanniaceae Hutch, nom. cons.
  • Alstroemeriaceae Dumort., nom. cons.
  • Colchicaceae DC., nom. cons.
  • Philesiaceae Dumort., nom. cons.
  • Ripogonaceae Conran & Clifford
  • Smilacaceae Vent., nom. cons.
  • Liliaceae Juss., nom. cons.
• Asparagales Link
  • Orchidaceae Juss., nom. cons.
  • Boryaceae M.W.Chase et al.
  • Blandfordiaceae R.Dahlgren & Clifford
  • Asteliaceae Dumort.
  • Lanariaceae H.Huber ex R.Dahlgren
  • Hypoxidaceae R.Br., nom. cons.
  • Doryanthaceae R.Dahlgren & Clifford
  • Ixioliriaceae Nakai (as 'Ixiolirionaceae'; spelling corrected)
  • Tecophilaeaceae Leyb., nom. cons.
  • Iridaceae Juss., nom. cons.
  • Xeronemataceae M.W.Chase et al.
  • Asphodelaceae Juss., nom. cons. prop. (including Xanthorrhoeaceae Dumort., nom. cons.)
  • Amaryllidaceae J.St.-Hil., nom. cons.
  • Asparagaceae Juss., nom. cons.
• Arecales Bromhead
  • Dasypogonaceae Dumort.
  • Arecaceae Bercht. & J.Presl, nom. cons. (=Palmae Juss., nom. cons.)
• Commelinales Mirb. ex Bercht. & J.Presl
  • Hanguanaceae Airy Shaw
  • Commelinaceae Mirb., nom. cons.
  • Philydraceae Link, nom. cons.
  • Pontederiaceae Kunth, nom. cons.
  • Haemodoraceae R.Br., nom. cons.
• Zingiberales Griseb.
  • Strelitziaceae Hutch., nom. cons.
  • Lowiaceae Ridl., nom. cons.
  • Heliconiaceae Vines
  • Musaceae Juss., nom. cons.
  • Cannaceae Juss., nom. cons.
  • Marantaceae R.Br., nom. cons.
  • Costaceae Nakai
  • Zingiberaceae Martinov, nom. cons.
• Poales Small
  • Typhaceae Juss., nom. cons.
  • Bromeliaceae Juss., nom. cons.
  • Rapateaceae Dumort., nom. cons.
  • Xyridaceae C.Agardh, nom. cons.
  • Eriocaulaceae Martinov, nom. cons.
  • Mayacaceae Kunth, nom. cons.
  • Thurniaceae Engl., nom. cons.
  • Juncaceae Juss., nom. cons.
  • Cyperaceae Juss., nom. cons.
  • Restionaceae R.Br., nom. cons. * (including Anarthriaceae D.W.Cutler & Airy Shaw, Centrolepidaceae Endl., nom. cons.)
  • Flagellariaceae Dumort., nom. cons.
  • Joinvilleaceae Toml. & A.C.Sm.
  • Ecdeiocoleaceae D.W.Cutler & Airy Shaw
  • Poaceae Barnhart, nom. cons. (= Gramineae Juss., nom. cons.)

Probable sister of eudicots

• Ceratophyllales Link
  • Ceratophyllaceae Gray, nom. cons.

Eudicots

• Ranunculales Juss. ex Bercht. & J.Presl
  • Eupteleaceae K.Wilh., nom. cons.
  • Papaveraceae Juss., nom. cons.
  • Circaeasteraceae Hutch., nom. cons.
  • Lardizabalaceae R.Br., nom. cons.
  • Menispermaceae Juss., nom. cons.
  • Berberidaceae Juss., nom. cons.
  • Ranunculaceae Juss., nom. cons.
• Proteales Juss. ex Bercht. & J.Presl
  • Sabiaceae Blume, nom. cons.
  • Nelumbonaceae A.Rich., nom. cons.
  • Platanaceae T.Lestib., nom. cons.
  • Proteaceae Juss., nom. cons.
• Trochodendrales Takht. ex Cronq.
  • Trochodendraceae Eichler, nom. cons.
• Buxales Takht. ex Reveal
  • Buxaceae Dumort., nom. cons. * (including Haptanthaceae C.Nelson)

Core eudicots

• Gunnerales Takht. ex Reveal
  • Myrothamnaceae Nied., nom. cons.
  • Gunneraceae Meisn., nom. cons.
• Dilleniales DC. ex Bercht. & J.Presl †
  • Dilleniaceae Salisb., nom. cons.

Superrosids

• Saxifragales Bercht. & J.Presl
  • Peridiscaceae Kuhlm., nom. cons.
  • Paeoniaceae Raf., nom. cons.
  • Altingiaceae Lindl., nom. cons.
  • Hamamelidaceae R.Br., nom. cons.
  • Cercidiphyllaceae Engl., nom. cons.
  • Daphniphyllaceae Müll.Arg., nom. cons.
  • Iteaceae J.Agardh, nom. cons.
  • Grossulariaceae DC., nom. cons.
  • Saxifragaceae Juss., nom. cons.
  • Crassulaceae J.St.-Hil., nom. cons.
  • Aphanopetalaceae Doweld
  • Tetracarpaeaceae Nakai
  • Penthoraceae Rydb. ex Britton, nom. cons.
  • Haloragaceae R.Br., nom. cons.
  • Cynomoriaceae Endl. ex Lindl., nom. cons.

Rosids

• Vitales Juss. ex Bercht. & J.Presl
  • Vitaceae Juss., nom. cons.
• Zygophyllales Link
  • Krameriaceae Dumort., nom. cons.
  • Zygophyllaceae R.Br., nom. cons.
• Fabales Bromhead
  • Quillajaceae D.Don
  • Fabaceae Lindl., nom. cons. (= Leguminosae Juss., nom. cons.)
  • Surianaceae Arn., nom. cons.
  • Polygalaceae Hoffmanns. & Link, nom. cons.
• Rosales Bercht. & J.Presl
  • Rosaceae Juss., nom. cons.
  • Barbeyaceae Rendle, nom. cons.
  • Dirachmaceae Hutch.
  • Elaeagnaceae Juss., nom. cons.
  • Rhamnaceae Juss., nom. cons.
  • Ulmaceae Mirb., nom. cons.
  • Cannabaceae Martinov, nom. cons.
  • Moraceae Gaudich., nom. cons.
  • Urticaceae Juss., nom. cons.
• Fagales Engl.
  • Nothofagaceae Kuprian.
  • Fagaceae Dumort., nom. cons.
  • Myricaceae Rich. ex Kunth, nom. cons.
  • Juglandaceae DC. ex Perleb, nom. cons.
  • Casuarinaceae R.Br., nom. cons.
  • Ticodendraceae Gomez-Laur. & L.D.Gomez
  • Betulaceae Gray, nom. cons.
• Cucurbitales Juss. ex Bercht. & J.Presl
  • Apodanthaceae Tiegh. ex Takht. *
  • Anisophylleaceae Ridl.
  • Corynocarpaceae Engl., nom. cons.
  • Coriariaceae DC., nom. cons.
  • Cucurbitaceae Juss., nom. cons.
  • Tetramelaceae Airy Shaw
  • Datiscaceae Dumort., nom. cons.
  • Begoniaceae C.Agardh, nom. cons.

COM clade; placement uncertain

• Celastrales Link
  • Lepidobotryaceae J.L eonard, nom. cons.
  • Celastraceae R.Br., nom. cons.
• Oxalidales Bercht. & J.Presl
  • Huaceae A.Chev.
  • Connaraceae R.Br., nom. cons.
  • Oxalidaceae R.Br., nom. cons.
  • Cunoniaceae R.Br., nom. cons.
  • Elaeocarpaceae Juss., nom. cons.
  • Cephalotaceae Dumort., nom. cons.
  • Brunelliaceae Engl., nom. cons.
• Malpighiales Juss. ex Bercht. & J.Presl
  • Pandaceae Engl. & Gilg, nom. cons.
  • Irvingiaceae Exell & Mendonça, nom. cons. * (including Allantospermum Forman)
  • Ctenolophonaceae Exell & Mendonça
  • Rhizophoraceae Pers., nom. cons.
  • Erythroxylaceae Kunth, nom. cons.
  • Ochnaceae DC., nom. cons.
  • Bonnetiaceae L.Beauvis. ex Nakai
  • Clusiaceae Lindl., nom. cons. (= Guttiferae Juss., nom. cons.)
  • Calophyllaceae J.Agardh
  • Podostemaceae Rich. ex Kunth, nom. cons.
  • Hypericaceae Juss., nom. cons.
  • Caryocaraceae Voigt, nom. cons.
  • Lophopyxidaceae H.Pfeiff.
  • Putranjivaceae Meisn.
  • Centroplacaceae Doweld & Reveal
  • Elatinaceae Dumort., nom. cons.
  • Malpighiaceae Juss., nom. cons.
  • Balanopaceae Benth. & Hook.f., nom. cons.
  • Trigoniaceae A.Juss., nom. cons.
  • Dichapetalaceae Baill., nom. cons.
  • Euphroniaceae Marc.-Berti
  • Chrysobalanaceae R.Br., nom. cons.
  • Humiriaceae A.Juss., nom. cons.
  • Achariaceae Harms, nom. cons.
  • Violaceae Batsch, nom. cons.
  • Goupiaceae Miers
  • Passifloraceae Juss. ex Roussel, nom. cons.
  • Lacistemataceae Mart., nom. cons.
  • Salicaceae Mirb., nom. cons.
  • Peraceae Klotzsch *
  • Rafflesiaceae Dumort., nom. cons.
  • Euphorbiaceae Juss., nom. cons. *
  • Linaceae DC. ex Perleb, nom. cons.
  • Ixonanthaceae Planch. ex Miq., nom. cons. *
  • Picrodendraceae Small, nom. cons.
  • Phyllanthaceae Martinov, nom. cons.

Rosids continued

• Geraniales Juss. ex Bercht. & J.Presl
  • Geraniaceae Juss., nom. cons.
  • Francoaceae A.Juss., nom. cons. * (including Bersamaceae Doweld, Greyiaceae Hutch., nom. cons., Ledocarpaceae Meyen, Melianthaceae Horan., nom. cons., Rhynchothecaceae A.Juss., Vivianiaceae Klotzsch, nom. cons.)
• Myrtales Juss. ex Bercht. & J.Presl
  • Combretaceae R.Br., nom. cons.
  • Lythraceae J.St.-Hil., nom. cons.
  • Onagraceae Juss., nom. cons.
  • Vochysiaceae A.St.-Hil., nom. cons.
  • Myrtaceae Juss., nom. cons.
  • Melastomataceae Juss., nom. cons.
  • Crypteroniaceae A.DC., nom. cons.
  • Alzateaceae S.A.Graham
  • Penaeaceae Sweet ex Guill., nom. cons.
• Crossosomatales Takht. ex Reveal
  • Aphloiaceae Takht.
  • Geissolomataceae A.DC., nom. cons.
  • Strasburgeriaceae Tiegh., nom. cons.
  • Staphyleaceae Martinov, nom. cons.
  • Guamatelaceae S.H.Oh & D.Potter
  • Stachyuraceae J.Agardh, nom. cons.
  • Crossosomataceae Engl., nom. cons.
• Picramniales Doweld
  • Picramniaceae Fernando & Quinn
• Huerteales Doweld
  • Gerrardinaceae M.H.Alford
  • Petenaeaceae Christenh. et al. *
  • Tapisciaceae Takht.
  • Dipentodontaceae Merr., nom. cons.
• Sapindales Juss. ex Bercht. & J.Presl
  • Biebersteiniaceae Schnizl.
  • Nitrariaceae Lindl.
  • Kirkiaceae Takht.
  • Burseraceae Kunth, nom. cons.
  • Anacardiaceae R.Br., nom. cons.
  • Sapindaceae Juss., nom. cons. (including Xanthocerataceae Buerki et al., as 'Xanthoceraceae')
  • Rutaceae Juss., nom. cons.
  • Simaroubaceae DC., nom. cons.
  • Meliaceae Juss., nom. cons.
• Malvales Juss. ex Bercht. & J.Presl
  • Cytinaceae A.Rich.
  • Muntingiaceae C.Bayer et al.
  • Neuradaceae Kostel., nom. cons.
  • Malvaceae Juss., nom. cons.
  • Sphaerosepalaceae Bullock
  • Thymelaeaceae Juss., nom. cons.
  • Bixaceae Kunth, nom. cons.
  • Cistaceae Juss., nom. cons. * (including Pakaraimaea Maguire & P.S.Ashton)
  • Sarcolaenaceae Caruel, nom. cons.
  • Dipterocarpaceae Blume, nom. cons. *
• Brassicales Bromhead
  • Akaniaceae Stapf, nom. cons.
  • Tropaeolaceae Juss. ex DC., nom. cons.
  • Moringaceae Martinov, nom. cons.
  • Caricaceae Dumort., nom. cons.
  • Limnanthaceae R.Br., nom. cons.
  • Setchellanthaceae Iltis
  • Koeberliniaceae Engl., nom. cons.
  • Bataceae Mart. ex Perleb, nom. cons.
  • Salvadoraceae Lindl., nom. cons.
  • Emblingiaceae Airy Shaw
  • Tovariaceae Pax, nom. cons.
  • Pentadiplandraceae Hutch. & Dalziel
  • Gyrostemonaceae A.Juss., nom. cons.
  • Resedaceae Martinov, nom. cons. * (including Borthwickiaceae J.X.Su et al., Stixidaceae Doweld as 'Stixaceae', Forchhammeria Liebm.)
  • Capparaceae Juss., nom. cons. *
  • Cleomaceae Bercht. & J.Presl
  • Brassicaceae Burnett, nom. cons. (= Cruciferae Juss., nom. cons.)

Superasterids

• Berberidopsidales Doweld
  • Aextoxicaceae Engl. & Gilg, nom. cons.
  • Berberidopsidaceae Takht.
• Santalales R.Br. ex Bercht. & J.Presl
  • Olacaceae R.Br., nom. cons. (not monophyletic; including Aptandraceae Miers, Coulaceae Tiegh., Erythropalaceae Planch. ex Miq., nom. cons., Octoknemaceae Soler. nom. cons., Strombosiaceae Tiegh., Ximeniaceae Horan.)
  • Opiliaceae Valeton, nom. cons.
  • Balanophoraceae Rich., nom. cons.
  • Santalaceae R.Br., nom. cons. (not monophyletic if Balanophoraceae are embedded; including Amphorogynaceae Nickrent & Der, Cervantesiaceae Nickrent & Der, Comandraceae Nickrent & Der, Nanodeaceae Nickrent & Der, Thesiaceae Vest, Viscaceae Batsch)
  • Misodendraceae J.Agardh, nom. cons.
  • Schoepfiaceae Blume
  • Loranthaceae Juss., nom. cons.
• Caryophyllales Juss. ex Bercht. & J.Presl
  • Frankeniaceae Desv., nom. cons.
  • Tamaricaceae Link, nom. cons.
  • Plumbaginaceae Juss., nom. cons.
  • Polygonaceae Juss., nom. cons.
  • Droseraceae Salisb., nom. cons.
  • Nepenthaceae Dumort, nom. cons.
  • Drosophyllaceae Chrtek et al.
  • Dioncophyllaceae Airy Shaw, nom. cons.
  • Ancistrocladaceae Planch. ex Walp., nom. cons.
  • Rhabdodendraceae Prance
  • Simmondsiaceae Tiegh.
  • Physenaceae Takht.
  • Asteropeiaceae Takht. ex Reveal & Hoogland
  • Macarthuriaceae Christenh. *
  • Microteaceae Schäferhoff & Borsch *
  • Caryophyllaceae Juss., nom. cons.
  • Achatocarpaceae Heimerl, nom. cons.
  • Amaranthaceae Juss., nom. cons.
  • Stegnospermataceae Nakai
  • Limeaceae Shipunov ex Reveal *
  • Lophiocarpaceae Doweld & Reveal
  • Kewaceae Christenh. *
  • Barbeuiaceae Nakai
  • Gisekiaceae Nakai
  • Aizoaceae Martinov, nom. cons.
  • Phytolaccaceae R.Br., nom. cons. *
  • Petiveriaceae C.Agardh * (including Rivinaceae C.Agardh)
  • Sarcobataceae Behnke
  • Nyctaginaceae Juss., nom. cons.
  • Molluginaceae Bartl., nom. cons. *
  • Montiaceae Raf.
  • Didiereaceae Radlk., nom. cons.
  • Basellaceae Raf., nom. cons.
  • Halophytaceae S.Soriano
  • Talinaceae Doweld
  • Portulacaceae Juss., nom. cons.
  • Anacampserotaceae Eggli & Nyffeler
  • Cactaceae Juss., nom. cons.

Asterids

• Cornales Link
  • Nyssaceae Juss. ex Dumort., nom. cons.
  • Hydrostachyaceae Engl., nom. cons.
  • Hydrangeaceae Dumort., nom. cons.
  • Loasaceae Juss., nom. cons.
  • Curtisiaceae Takht.
  • Grubbiaceae Endl. ex Meisn., nom. cons.
  • Cornaceae Bercht. & J.Presl, nom. cons.
• Ericales Bercht. & J.Presl
  • Balsaminaceae A.Rich., nom. cons.
  • Marcgraviaceae Bercht. & J.Presl, nom. cons.
  • Tetrameristaceae Hutch.
  • Fouquieriaceae DC., nom. cons.
  • Polemoniaceae Juss., nom. cons.
  • Lecythidaceae A.Rich., nom. cons.
  • Sladeniaceae Airy Shaw
  • Pentaphylacaceae Engl., nom. cons.
  • Sapotaceae Juss., nom. cons.
  • Ebenaceae Gürke, nom. cons.
  • Primulaceae Batsch ex Borkh., nom. cons.
  • Theaceae Mirb., nom. cons.
  • Symplocaceae Desf., nom. cons.
  • Diapensiaceae Lindl., nom. cons.
  • Styracaceae DC. & Spreng., nom. cons.
  • Sarraceniaceae Dumort., nom. cons.
  • Roridulaceae Martinov, nom. cons.
  • Actinidiaceae Gilg & Werderm., nom. cons.
  • Clethraceae Klotzsch, nom. cons.
  • Cyrillaceae Lindl., nom. cons.
  • Ericaceae Juss., nom. cons.
  • Mitrastemonaceae Makino, nom. cons. (placement in order unclear)
• Icacinales Tiegh. †
  • Oncothecaceae Kobuski ex Airy Shaw
  • Icacinaceae Miers, nom. cons. *
• Metteniusales Takht. †
  • Metteniusaceae H.Karst. ex Schnizl. *
• Garryales Mart.
  • Eucommiaceae Engl., nom. cons.
  • Garryaceae Lindl., nom. cons.
• Gentianales Juss. ex Bercht. & J.Presl
  • Rubiaceae Juss., nom. cons.
  • Gentianaceae Juss., nom. cons.
  • Loganiaceae R.Br. ex Mart., nom. cons.
  • Gelsemiaceae L.Struwe & V.A.Albert * (including Pteleocarpaceae Brummitt)
  • Apocynaceae Juss., nom. cons.
• Boraginales Juss. ex Bercht. & J.Presl †
  • Boraginaceae Juss., nom. cons. (including Codonaceae Weigend & Hilger)
• Vahliales Doweld †
  • Vahliaceae Dandy
• Solanales Juss. ex Bercht. & J.Presl
  • Convolvulaceae Juss., nom. cons.
  • Solanaceae Juss., nom. cons.
  • Montiniaceae Nakai, nom. cons.
  • Sphenocleaceae T.Baskerv., nom. cons.
  • Hydroleaceae R.Br.
• Lamiales Bromhead
  • Plocospermataceae Hutch.
  • Carlemanniaceae Airy Shaw
  • Oleaceae Hoffmanns. & Link, nom. cons.
  • Tetrachondraceae Wettst.
  • Calceolariaceae Olmstead
  • Gesneriaceae Rich. & Juss., nom. cons. * (the position of Peltanthera Benth. is problematic and here considered unplaced to family)
  • Plantaginaceae Juss., nom. cons.
  • Scrophulariaceae Juss., nom. cons.
  • Stilbaceae Kunth, nom. cons.
  • Linderniaceae Borsch et al.
  • Byblidaceae Domin, nom. cons.
  • Martyniaceae Horan., nom. cons.
  • Pedaliaceae R.Br., nom. cons.
  • Acanthaceae Juss., nom. cons.
  • Bignoniaceae Juss., nom. cons.
  • Lentibulariaceae Rich., nom. cons.
  • Schlegeliaceae Reveal
  • Thomandersiaceae Sreem.
  • Verbenaceae J.St.Hil., nom. cons.
  • Lamiaceae Martinov, nom. cons. (= Labiatae Juss., nom. cons.)
  • Mazaceae Reveal
  • Phrymaceae Schauer, nom. cons. *
  • Paulowniaceae Nakai
  • Orobanchaceae Vent., nom. cons. * (including Lindenbergiaceae Doweld, Rehmanniaceae Reveal)
• Aquifoliales Senft
  • Stemonuraceae Kårehed
  • Cardiopteridaceae Blume, nom. cons.
  • Phyllonomaceae Small
  • Helwingiaceae Decne.
  • Aquifoliaceae Bercht. & J.Presl, nom. cons.
• Asterales Link
  • Rousseaceae DC.
  • Campanulaceae Juss., nom. cons.
  • Pentaphragmataceae J.Agardh, nom. cons.
  • Stylidiaceae R.Br., nom. cons.
  • Alseuosmiaceae Airy Shaw
  • Phellinaceae Takht.
  • Argophyllaceae Takht.
  • Menyanthaceae Dumort., nom. cons.
  • Goodeniaceae R.Br., nom. cons.
  • Calyceraceae R.Br. ex Rich., nom. cons.
  • Asteraceae Bercht. & J.Presl, nom. cons. (= Compositae Giseke, nom. cons.)
• Escalloniales Link
  • Escalloniaceae R.Br. ex Dumort., nom. cons.
• Bruniales Dumort.
  • Columelliaceae D.Don, nom. cons.
  • Bruniaceae R.Br. ex DC., nom. cons.
• Paracryphiales Takht. ex Reveal
  • Paracryphiaceae Airy Shaw
• Dipsacales Juss. ex Bercht. & J.Presl
  • Adoxaceae E.Mey., nom. cons. (= Viburnaceae Raf., nom. cons. prop.)
  • Caprifoliaceae Juss., nom. cons.
• Apiales Nakai
  • Pennantiaceae J.Agardh
  • Torricelliaceae Hu
  • Griseliniaceae Takht., nom. cons. prop.
  • Pittosporaceae R.Br., nom. cons.
  • Araliaceae Juss., nom. cons.
  • Myodocarpaceae Doweld
  • Apiaceae Lindl., nom. cons. (= Umbelliferae Juss., nom. cons.)

Phylogeny

Like the earlier APG systems, the APG IV revision is based on a phylogenetic tree for the angiosperms, as shown below.^[4]

References

Bibliography

List of systems of plant taxonomy
Pre-Linnaean	John Ray system (1686–1704) A discourse on the seeds of plants Methodus plantarum nova De Variis Plantarum Methodis Dissertatio Brevis Methodus plantarum emendata et aucta
Pre-Darwinian	Linnaean system (1735–51) Systema Naturae Species Plantarum Genera Plantarum Philosophia Botanica Adanson system (1763) Familles naturelles des plantes De Jussieu system (1789) Genera Plantarum, secundum ordines naturales disposita juxta methodum in Horto Regio Parisiensi exaratam De Candolle system (1819–24) Théorie élémentaire de la botanique, ou exposition des principes de la classification naturelle et de l'art de décrire et d'etudier les végétaux Prodromus systemati naturalis regni vegetabilis sive enumeratio contracta ordinum, generum specierumque plantarum huc usque cognitarum, juxta methodi naturalis normas digesta Berchtold and Presl system (1820–1823) O Prirozenosti Rostlin Agardh system (1825) Classes Plantarum Gray system (1821) The Natural Arrangement of British Plants Dumortier system (1829) Analyse des familles des plantes Lindley system (1830–45) An Introduction to the Natural System of Botany The Vegetable Kingdom Don system (1834) General History of Dichlamydious Plants. Bentham & Hooker system (1862–83) Genera plantarum ad exemplaria imprimis in herbariis kewensibus servata definita. Baillon system (1867–94) Histoire des plantes
Post-Darwinian (Phyletic)	Nineteenth century Eichler system (1875–1886) Blüthendiagramme: construirt und erläutert Syllabus der Vorlesungen über Phanerogamenkunde Engler system (1886–1924) Führer durch den Königlich botanischen Garten der Universität zu Breslau Die Natürlichen Pflanzenfamilien Syllabus der Pflanzenfamilien Das Pflanzenreich van Tieghem system (1891) Traité de botanique Twentieth century Dalla Torre & Harms system (1900–07) Genera Siphonogamarum, ad systema Englerianum conscripta Warming system (1912) Haandbog i den systematiske botanik Hallier system (1912) L'origine et le système phylétique des angiospermes Bessey system (1915) The phylogenetic taxonomy of flowering plants Wettstein system (1901–35) Handbuch der systematischen Botanik Lotsy system (1907–11) Vorträge über botanische Stammesgeschichte, gehalten an der Reichsuniversität zu Leiden. Ein Lehrbuch der Pflanzensystematik. Hutchinson system (1926–73) The families of flowering plants, arranged according to a new system based on their probable phylogeny Calestani system (1933) Le origini e la classificazione delle Angiosperme Kimura system (1956) Système et phylogénie des monocotyledones Emberger system (1960) Traité de Botanique systématique Melchior system (1964) Syllabus der Pflanzenfamilien Takhtajan system (1966–97) A system and phylogeny of the flowering plants Flowering plants: origin and dispersal Diversity and classification of flowering plants Cronquist system (1968–81) The evolution and classification of flowering plants An integrated system of classification of flowering plants Goldberg system (1986–89 Classification, Evolution and Phylogeny of the Families of Dicotyledons Dahlgren system (1975–85) The families of the monocotyledons: structure, evolution, and taxonomy Thorne system (1968–2000) An updated phylogenetic classification of the flowering plants Kubitzki system (1990–) The Families and Genera of Vascular Plants Reveal system (1999) Reveal System of Angiosperm Classification
Angiosperm Phylogeny Group System (1998–2009)	An ordinal classification for the families of flowering plants (APG I) An update of the Angiosperm Phylogeny Group classification for the orders and families of flowering plants: APG II An update of the Angiosperm Phylogeny Group classification for the orders and families of flowering plants: APG III An update of the Angiosperm Phylogeny Group classification for the orders and families of flowering plants: APG IV Angiosperm Phylogeny Website
See also	Plantae at Wikispecies

Note: This is a selected list of the more influential systems. There are many other systems, for instance a review of earlier systems, published by Lindley in his 1853 edition, and Dahlgren (1982). Examples include the works of Scopoli, Batsch and Grisebach.