APG III system

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The APG III system of flowering plant classification is the third version of a modern, mostly molecular-based, system of plant taxonomy being developed by the Angiosperm Phylogeny Group (APG). Published in 2009, it was superseded in 2016 by a further revision, the APG IV system.[1][2][3]

Along with the publication outlining the new system, there were two accompanying publications in the same issue of the Botanical Journal of the Linnean Society. The first, by Chase & Reveal, was a formal phylogenetic classification of all land plants (embryophytes), compatible with the APG III classification. As the APG have chosen to eschew ranks above order, this paper was meant to fit the system into the existing Linnaean hierarchy for those that prefer such a classification. The result was that all land plants were placed in the class Equisetopsida, which was then divided into 16 subclasses and a multitude of superorders.[4] The second, by Haston et al., was a linear sequence of families following the APG III system (LAPG III).

This provided a numbered list to the 413 families of APG III. A linear sequence is of particular use to herbarium curators and those working on floristic works wishing to arrange their taxa according to APG III.[5]

Organization[]

The APG III system recognized all of the 45 orders of the previous system, as well as 14 new ones. The order Ceratophyllales was erroneously marked as a new order, as it had been recognized in both of the previous APG systems. The newly recognized orders were:

Amborellales, Nymphaeales, Chloranthales, Petrosaviales, Trochodendrales, Buxales, Vitales, Zygophyllales, Picramniales, Huerteales, Berberidopsidales, Escalloniales, Bruniales, and Paracryphiales.

The designation of alternative "bracketed families" was abandoned in APG III, because its inclusion in the previous system had been unpopular. APG III recognized 413 families, 43 fewer than in the previous system. Forty-four of the 55 "bracketed families" were discontinued, and 20 other families were discontinued as well.

The discontinued bracketed families were:

Illiciaceae, Alliaceae, Agapanthaceae, Agavaceae, Aphyllanthaceae, Hesperocallidaceae, Hyacinthaceae, Laxmanniaceae, Ruscaceae, Themidaceae, Asphodelaceae, Hemerocallidaceae, Kingdoniaceae, Fumariaceae, Pteridophyllaceae, Didymelaceae, Tetracentraceae, Pterostemonaceae, , Francoaceae, Memecylaceae, , Rhoipteleaceae, Medusagynaceae, Quiinaceae, Malesherbiaceae, Turneraceae, Bretschneideraceae, , Cochlospermaceae, , , Nyssaceae, Ternstroemiaceae, Pellicieraceae, , Donatiaceae, Lobeliaceae, Desfontainiaceae, Diervillaceae, Dipsacaceae, Linnaeaceae, Morinaceae, and Valerianaceae.

The other discontinued families were:

Limnocharitaceae, Luzuriagaceae, Sparganiaceae, Ixerbaceae, Ledocarpaceae, Heteropyxidaceae, Psiloxylaceae, Oliniaceae, Rhynchocalycaceae, Parnassiaceae, Maesaceae, Myrsinaceae, Theophrastaceae, Eremosynaceae, Polyosmaceae, Tribelaceae, Sphenostemonaceae, Aralidiaceae, Mackinlayaceae, and Melanophyllaceae.

21 families were accepted in the APG III system which had not been in the previous system, and a few families were moved to a different position. The newly recognized families are:

Cynomoriaceae, Haptanthaceae, Petermanniaceae, Schoepfiaceae, Limeaceae, Lophiocarpaceae, Montiaceae, Talinaceae, Anacampserotaceae, Centroplacaceae, Calophyllaceae, Guamatelaceae, Gerrardinaceae, Dipentodontaceae, Capparidaceae, Cleomaceae, Cytinaceae, Mitrastemonaceae, Metteniusaceae, Linderniaceae, and Thomandersiaceae.

The number of families not placed in any order was reduced from 39 to 10. Apodanthaceae and Cynomoriaceae were placed among the angiosperms, incertae sedis, that is, not in any group within the angiosperms. Eight other families were placed incertae sedis in various supra-ordinal groups within the angiosperms. The families not placed in any order were:

Apodanthaceae, Cynomoriaceae, Dasypogonaceae, Sabiaceae, Dilleniaceae, Icacinaceae, Metteniusaceae, Oncothecaceae, Vahliaceae, and Boraginaceae.

The paragraph below shows the number of families in each order and the placement of those families that were not included in any order. These figures were produced by simply counting the families in the text of the paper that established APG III.[1]

ORDERS: Amborellales (1), Nymphaeales (3), Austrobaileyales (3), Chloranthales (1), Canellales (2), Piperales (5), Magnoliales (6), Laurales (7), Acorales (1), Alismatales (13), Petrosaviales (1), Dioscoreales (3), Pandanales (5), Liliales (10), Asparagales (14), Arecales (1), Poales (16), Commelinales (5), Zingiberales (8), Ceratophyllales (1), Ranunculales (7), Proteales (3), Trochodendrales (1), Buxales (2), Gunnerales (2), Saxifragales (14), Vitales (1), Zygophyllales (2), Celastrales (2), Oxalidales (7), Malpighiales (35), Fabales (4), Rosales (9), Fagales (7), Cucurbitales (7), Geraniales (3), Myrtales (9), Crossosomatales (7), Picramniales (1), Sapindales (9), Huerteales (3), Brassicales (17), Malvales (10), Berberidopsidales (2), Santalales (7), Caryophyllales (34), Cornales (6), Ericales (22), Garryales (2), Gentianales (5), Solanales (5), Lamiales (23), Aquifoliales (5), Asterales (11), Escalloniales (1), Bruniales (2), Apiales (7), Paracryphiales (1), Dipsacales (2).

SUPRA-ORDINAL GROUPS: commelinids (1), basal eudicots (1), Pentapetalae (1), lamiids incertae sedis (3), core lamiids (2), angiosperms incertae sedis (2).

The circumscription of the family Icacinaceae remains especially doubtful. Apodytes and its close relative, Rhaphiostylis, as well as Emmotum, Cassinopsis, and a few other genera were provisionally retained within it until further studies can determine whether they properly belong there.

Three genera (Gumillea, Nicobariodendron, and Petenaea) were placed within the angiosperms incertae sedis. Gumillea had been unplaced in APG II. Nicobariodendron and Petenaea were newly added to the list. The latter was later placed into its own family Petenaeaceae in the order Huerteales[6][7]

The classification is shown below in two versions. The short version goes to the level of orders and of families unplaced in an order. The detailed version shows all the families. Orders at the same level in the classification are arranged alphabetically. Note that orders may not contain the same families as in earlier versions of the APG system (APG system, APG II system). Further detail on relationships can be seen in the phylogenetic tree below.

Short version[]

  • clade angiosperms
    order Amborellales
    order Nymphaeales
    order Austrobaileyales
    order Chloranthales
    clade magnoliids
    order Canellales
    order Laurales
    order Magnoliales
    order Piperales
    clade monocots
    order Acorales
    order Alismatales
    order Asparagales
    order Dioscoreales
    order Liliales
    order Pandanales
    order Petrosaviales
    clade commelinids
    family Dasypogonaceae—unplaced in an order
    order Arecales
    order Commelinales
    order Poales
    order Zingiberales
    probable sister of eudicots
    order Ceratophyllales
    clade eudicots
    family Sabiaceae—unplaced in an order
    order Buxales
    order Proteales
    order Ranunculales
    order Trochodendrales
    clade core eudicots
    family Dilleniaceae—unplaced in an order
    order Gunnerales
    order Saxifragales
    clade rosids
    order Vitales
    clade fabids (eurosids I)
    order Celastrales
    order Cucurbitales
    order Fabales
    order Fagales
    order Malpighiales
    order Oxalidales
    order Rosales
    order Zygophyllales
    clade malvids (eurosids II)
    order Brassicales
    order Crossosomatales
    order Geraniales
    order Huerteales
    order Malvales
    order Myrtales
    order Picramniales
    order Sapindales
    (back to core eudicots)
    order Berberidopsidales
    order Caryophyllales
    order Santalales
    clade asterids
    order Cornales
    order Ericales
    clade lamiids (euasterids I)
    family Boraginaceae—unplaced in an order
    family Vahliaceae—unplaced in an order
    family Icacinaceae—unplaced in an order
    family Metteniusaceae—unplaced in an order
    family Oncothecaceae—unplaced in an order
    order Garryales
    order Gentianales
    order Lamiales
    order Solanales
    clade campanulids (euasterids II)
    order Apiales
    order Aquifoliales
    order Asterales
    order Bruniales
    order Dipsacales
    order Escalloniales
    order Paracryphiales

Detailed version[]

Legend:

* = new family placement;
= newly recognized order for the APG system;
§ = new family circumscription described in the text;
$ = families that represent the broader circumscription of options available in APG II and favoured here;
$$ = families that were in square brackets in APG II, the narrower circumscriptions favoured here.

Angiosperms[]

  • Amborellales Melikyan, A.V.Bobrov & Zaytzeva
    • Amborellaceae Pichon
  • Nymphaeales Salisb. ex Bercht. & J.Presl
    • $$Cabombaceae Rich. ex A.Rich.
    • *Hydatellaceae U.Hamann
    • $$Nymphaeaceae Salisb.
  • Austrobaileyales Takht. ex Reveal
  • Chloranthales R.Br.
    • Chloranthaceae R.Br. ex Sims

Magnoliids[]

Monocots[]

  • Acorales Link
    • Acoraceae Martinov
  • Alismatales R.Br. ex Bercht. & J.Presl
    • §Alismataceae Vent. (including Limnocharitaceae Takht. ex Cronquist)
    • Aponogetonaceae Planch.
    • Araceae Juss.
    • Butomaceae Mirb.
    • Cymodoceaceae Vines
    • Hydrocharitaceae Juss.
    • Juncaginaceae Rich.
    • Posidoniaceae Vines
    • Potamogetonaceae Bercht. & J.Presl
    • Ruppiaceae Horan.
    • Scheuchzeriaceae F.Rudolphi
    • Tofieldiaceae Takht.
    • Zosteraceae Dumort.
  • Petrosaviales Takht.
    • Petrosaviaceae Hutch.
  • Dioscoreales R.Br.
  • Pandanales R.Br. ex Bercht. & J.Presl
  • Liliales Perleb
  • Asparagales Link
    • $Amaryllidaceae J.St.-Hil. (including Agapanthaceae F.Voigt, Alliaceae Borkh.)
    • $Asparagaceae Juss. (including Agavaceae Dumort., Aphyllanthaceae Burnett, Hesperocallidaceae Traub, Hyacinthaceae Batsch ex Borkh., Laxmanniaceae Bubani, Ruscaceae M.Roem., Themidaceae Salisb.)
    • Asteliaceae Dumort.
    • Blandfordiaceae R.Dahlgren & Clifford
    • Boryaceae M.W.Chase, Rudall & Conran
    • Doryanthaceae R.Dahlgren & Clifford
    • Hypoxidaceae R.Br.
    • Iridaceae Juss.
    • Ixioliriaceae Nakai
    • Lanariaceae R.Dahlgren & A.E.van Wyk
    • Orchidaceae Juss.
    • Tecophilaeaceae Leyb.
    • $Xanthorrhoeaceae Dumort. (including Asphodelaceae Juss. and Hemerocallidaceae R.Br.)
    • Xeronemataceae M.W.Chase, Rudall & M.F.Fay

Commelinids[]

Probable sister of eudicots[]

Eudicots[]

  • Ranunculales Juss. ex Bercht. & J.Presl
    • Berberidaceae Juss.
    • $Circaeasteraceae Hutch. (including Kingdoniaceae Airy Shaw)
    • Eupteleaceae K.Wilh.
    • Lardizabalaceae R.Br.
    • Menispermaceae Juss.
    • $Papaveraceae Juss. (including Fumariaceae Marquis, Pteridophyllaceae Nakai ex Reveal & Hoogland)
    • Ranunculaceae Juss.
  • Sabiaceae Blume
  • Proteales Juss. ex Bercht. & J.Presl
  • Trochodendrales Takht. ex Cronquist
    • $Trochodendraceae Eichler (including Tetracentraceae A.C.Sm.)
  • Buxales Takht. ex Reveal
    • $Buxaceae Dumort. (including Didymelaceae Leandri)
    • *Haptanthaceae C.Nelson

Core eudicots[]

  • Gunnerales Takht. ex Reveal
  • Dilleniaceae Salisb.
  • Saxifragales Bercht. & J.Presl
    • Altingiaceae Horan.
    • Aphanopetalaceae Doweld
    • Cercidiphyllaceae Engl.
    • Crassulaceae J.St.-Hil.
    • Daphniphyllaceae Müll.-Arg.
    • Grossulariaceae DC.
    • $$Haloragaceae R.Br.
    • Hamamelidaceae R.Br.
    • $Iteaceae J.Agardh (including Pterostemonaceae Small)
    • Paeoniaceae Raf.
    • $$Penthoraceae Rydb. ex Britt.
    • Peridiscaceae Kuhlm. (including Medusandraceae Brenan, Soyauxia Oliver)
    • Saxifragaceae Juss.
    • $$Tetracarpaeaceae Nakai
  • Berberidopsidales Doweld
    • Aextoxicaceae Engl. & Gilg
    • Berberidopsidaceae Takht.
  • Santalales R.Br. ex Bercht. & J.Presl
    • *Balanophoraceae Rich.
    • Loranthaceae Juss.
    • Misodendraceae J.Agardh
    • Santalaceae R.Br.
    • Olacaceae R.Br.
    • Opiliaceae Valeton
    • *Schoepfiaceae Blume
  • Caryophyllales Juss. ex Bercht. & J.Presl
    • Achatocarpaceae Heimerl
    • Aizoaceae Martinov
    • Amaranthaceae Juss.
    • *Anacampserotaceae Eggli & Nyffeler
    • Ancistrocladaceae Planch. ex Walp.
    • Asteropeiaceae Takht. ex Reveal & Hoogland
    • Barbeuiaceae Nakai
    • Basellaceae Raf.
    • Cactaceae Juss.
    • Caryophyllaceae Juss.
    • §Didiereaceae Radlk.
    • Dioncophyllaceae Airy Shaw
    • Droseraceae Salisb.
    • Drosophyllaceae Chrtek, Slavíková & Studnicka
    • Frankeniaceae Desv.
    • Gisekiaceae Nakai
    • Halophytaceae A.Soriano
    • *Limeaceae Shipunov ex Reveal
    • *Lophiocarpaceae Doweld & Reveal
    • §Molluginaceae Bartl.
    • *Montiaceae Raf.
    • Nepenthaceae Dumort.
    • Nyctaginaceae Juss.
    • Physenaceae Takht.
    • Phytolaccaceae R.Br.
    • Plumbaginaceae Juss.
    • Polygonaceae Juss.
    • §Portulacaceae Juss.
    • Rhabdodendraceae Prance
    • Sarcobataceae Behnke
    • Simmondsiaceae Tiegh.
    • Stegnospermataceae Nakai
    • *Talinaceae Doweld
    • Tamaricaceae Link

Rosids[]

  • Vitales Juss. ex Bercht. & J.Presl
    • Vitaceae Juss.

Fabids (eurosids I)[]

  • Zygophyllales Link
    • $$Krameriaceae Dumort.
    • $$Zygophyllaceae R.Br.
  • Celastrales Link
  • Oxalidales Bercht. & J.Presl
  • Malpighiales Juss. ex Bercht. & J.Presl
    • Achariaceae Harms
    • Balanopaceae Benth. & Hook.f.
    • Bonnetiaceae L.Beauvis. ex Nakai
    • *Calophyllaceae J.Agardh
    • Caryocaraceae Voigt
    • *Centroplacaceae Doweld & Reveal
    • $$Chrysobalanaceae R.Br.
    • §Clusiaceae Lindl.
    • Ctenolophonaceae Exell & Mendonça
    • $$Dichapetalaceae Baill.
    • Elatinaceae Dumort.
    • $$§Erythroxylaceae Kunth (including Aneulophus Benth.)
    • Euphorbiaceae Juss.
    • $$Euphroniaceae Marc.-Berti
    • Goupiaceae Miers
    • Humiriaceae A.Juss.
    • Hypericaceae Juss.
    • Irvingiaceae Exell & Mendonça
    • Ixonanthaceae Planch. ex Miq.
    • Lacistemataceae Mart.
    • Linaceae DC. ex Perleb
    • Lophopyxidaceae H.Pfeiff.
    • Malpighiaceae Juss.
    • $Ochnaceae DC. (including Medusagynaceae Engl. & Gilg, Quiinaceae Choisy)
    • Pandaceae Engl. & Gilg
    • $Passifloraceae Juss. ex Roussel (including Malesherbiaceae D.Don, Turneraceae Kunth ex DC.)
    • Phyllanthaceae Martinov
    • Picrodendraceae Small
    • Podostemaceae Rich. ex Kunth
    • Putranjivaceae Meisn.
    • *Rafflesiaceae Dumort.
    • $$Rhizophoraceae Pers.
    • Salicaceae Mirb.
    • $$Trigoniaceae A.Juss.
    • Violaceae Batsch
  • Cucurbitales Juss. ex Bercht. & J.Presl
    • Anisophylleaceae Ridl.
    • Begoniaceae C.Agardh
    • Coriariaceae DC.
    • Corynocarpaceae Engl.
    • Cucurbitaceae Juss.
    • Datiscaceae Dumort.
    • Tetramelaceae Airy Shaw
  • Fabales Bromhead
  • Fagales Engl.
    • Betulaceae Gray
    • Casuarinaceae R.Br.
    • Fagaceae Dumort.
    • §Juglandaceae DC. ex Perleb (including Rhoipteleaceae Hand.-Mazz.)
    • Myricaceae A.Rich. ex Kunth
    • Nothofagaceae Kuprian
    • Ticodendraceae Gómez-Laur. & L.D.Gómez
  • Rosales Bercht. & J.Presl
    • Barbeyaceae Rendle
    • Cannabaceae Martinov
    • Dirachmaceae Hutch.
    • Elaeagnaceae Juss.
    • Moraceae Gaudich.
    • Rhamnaceae Juss.
    • Rosaceae Juss.
    • Ulmaceae Mirb.
    • Urticaceae Juss.

malvids (eurosids II)[]

  • Geraniales Juss. ex Bercht. & J.Presl
  • Myrtales Juss. ex Bercht. & J.Presl
    • Alzateaceae S.A.Graham
    • Combretaceae R.Br.
    • Crypteroniaceae A.DC.
    • Lythraceae J.St.-Hil.
    • $Melastomataceae Juss. (including Memecylaceae DC.)
    • §Myrtaceae Juss. (including Heteropyxidaceae Engl. & Gilg, Psiloxylaceae Croizat)
    • Onagraceae Juss.
    • §Penaeaceae Sweet ex Guill. (including Oliniaceae Arn., Rhynchocalycaceae L.A.S.Johnson & B.G.Briggs)
    • Vochysiaceae A.St.-Hil.
  • Crossosomatales Takht. ex Reveal
    • *Aphloiaceae Takht.
    • Crossosomataceae Engl.
    • *Geissolomataceae A.DC.
    • *Guamatelaceae S.Oh & D.Potter
    • Stachyuraceae J.Agardh
    • Staphyleaceae Martinov
    • Strasburgeriaceae Soler. (including Ixerbaceae Griseb. ex Doweld & Reveal)
  • Picramniales Doweld
    • *Picramniaceae Fernando & Quinn
  • Huerteales Doweld
    • *Dipentodontaceae Merr.
    • *Gerrardinaceae Alford
    • Tapisciaceae Takht.
  • Brassicales Bromhead
    • $Akaniaceae Stapf (including Bretschneideraceae Engl. & Gilg)
    • Bataceae Mart. ex Perleb
    • §Brassicaceae Burnett
    • *Capparaceae Juss.
    • Caricaceae Dumort.
    • *Cleomaceae Bercht. & J.Presl
    • Emblingiaceae J.Agardh
    • Gyrostemonaceae A.Juss.
    • Koeberliniaceae Engl.
    • Limnanthaceae R.Br.
    • Moringaceae Martinov
    • Pentadiplandraceae Hutch. & Dalziel
    • Resedaceae Martinov
    • Salvadoraceae Lindl.
    • Setchellanthaceae Iltis
    • Tovariaceae Pax
    • Tropaeolaceae Juss. ex DC.
  • Malvales Juss. ex Bercht. & J.Presl
  • Sapindales Juss. ex Bercht. & J.Presl
    • Anacardiaceae R.Br.
    • Biebersteiniaceae Schnizl.
    • Burseraceae Kunth
    • Kirkiaceae Takht.
    • Meliaceae Juss.
    • $Nitrariaceae Lindl. (including Tiegh. ex Takht., Takht.)
    • Rutaceae Juss.
    • Sapindaceae Juss.
    • Simaroubaceae DC.

Asterids[]

  • Cornales Link.
    • Cornaceae Bercht. & J.Presl (including Nyssaceae Juss. ex Dumort.)
    • Curtisiaceae Takht.
    • Grubbiaceae Endl. ex Meisn.
    • Hydrangeaceae Dumort.
    • Hydrostachyaceae Engl.
    • Loasaceae Juss.
  • Ericales Bercht. & J.Presl
    • Actinidiaceae Engl. & Gilg.
    • Balsaminaceae A.Rich.
    • Clethraceae Klotzsch
    • Cyrillaceae Lindl.
    • Diapensiaceae Lindl.
    • Ebenaceae Gürke
    • Ericaceae Juss.
    • Fouquieriaceae DC.
    • Lecythidaceae A.Rich.
    • Marcgraviaceae Bercht. & J.Presl
    • *Mitrastemonaceae Makino
    • $Pentaphylacaceae Engl. (including Ternstroemiaceae Mirb. ex DC.)
    • Polemoniaceae Juss.
    • §Primulaceae Batsch ex Borkh. (including Maesaceae Anderb., B.Ståhl & Källersjö, Myrsinaceae R.Br., Theophrastaceae G.Don)
    • Roridulaceae Martinov
    • Sapotaceae Juss.
    • Sarraceniaceae Dumort.
    • $$Sladeniaceae Airy Shaw
    • Styracaceae DC. & Spreng.
    • Symplocaceae Desf.
    • $Tetrameristaceae Hutch. (including Pellicieraceae L.Beauvis.)
    • Theaceae Mirb. ex Ker Gawl.

lamiids (euasterids I)[]

  • §*Boraginaceae Juss. (including Hoplestigmataceae Gilg)
  • Vahliaceae Dandy
  • Icacinaceae Miers
  • Metteniusaceae H.Karst. ex Schnizl.
  • Oncothecaceae Kobuski ex Airy Shaw
  • Garryales Lindl.
    • Eucommiaceae Engl.
    • $Garryaceae Lindl. (including Bercht. & J.Presl)
  • Gentianales Juss. ex Bercht. & J.Presl
  • Lamiales Bromhead
    • §Acanthaceae Juss.
    • Bignoniaceae Juss.
    • Byblidaceae Domin
    • Calceolariaceae Olmstead
    • Carlemanniaceae Airy Shaw
    • Gesneriaceae Rich. & Juss.
    • Lamiaceae Martinov
    • *Linderniaceae Borsch, K.Müll., & Eb.Fisch.
    • Lentibulariaceae Rich.
    • Martyniaceae Horan.
    • Oleaceae Hoffmanns. & Link
    • Orobanchaceae Vent.
    • Paulowniaceae Nakai
    • Pedaliaceae R.Br.
    • Phrymaceae Schauer
    • §Plantaginaceae Juss.
    • Plocospermataceae Hutch.
    • Schlegeliaceae Reveal
    • Scrophulariaceae Juss.
    • Stilbaceae Kunth
    • Tetrachondraceae Wettst.
    • *Thomandersiaceae Sreem.
    • Verbenaceae J.St.-Hil.
  • Solanales Juss. ex Bercht. & J.Presl
    • Convolvulaceae Juss.
    • Hydroleaceae R.Br. ex Edwards
    • Montiniaceae Nakai
    • Solanaceae Juss.
    • Sphenocleaceae T.Baskerv.

campanulids (euasterids II)[]

  • Aquifoliales Senft
    • Aquifoliaceae Bercht. & J.Presl
    • §Cardiopteridaceae Blume (including Tiegh.)
    • Helwingiaceae Decne.
    • Phyllonomaceae Small
    • Stemonuraceae Kårehed
  • Asterales Link
    • Alseuosmiaceae Airy Shaw
    • Argophyllaceae Takht.
    • Asteraceae Bercht. & J.Presl
    • Calyceraceae R.Br. ex Rich.
    • $Campanulaceae Juss. (including Lobeliaceae Juss.)
    • Goodeniaceae R.Br.
    • Menyanthaceae Dumort.
    • Pentaphragmataceae J.Agardh
    • Phellinaceae Takht.
    • Rousseaceae DC.
    • $Stylidiaceae R.Br. (including Donatiaceae B.Chandler)
  • Escalloniales R.Br.
    • §Escalloniaceae R.Br. ex Dumort. (including Eremosynaceae Dandy, Polyosmaceae Blume, Tribelaceae Airy Shaw)
  • Bruniales Dumort.
  • Paracryphiales Takht. ex Reveal
    • §Paracryphiaceae Airy Shaw (including * Doweld, Sphenostemonaceae P.Royen & Airy Shaw)
  • Dipsacales Juss. ex Bercht. & J.Presl
    • Adoxaceae E.Mey.
    • §Caprifoliaceae Juss. (including Diervillaceae Pyck, Dipsacaceae Juss., Linnaeaceae Backlund, Morinaceae Raf., Valerianaceae Batsch)
  • Apiales Nakai
    • Apiaceae Lindl. (including Mackinlayaceae)
    • Araliaceae Juss.
    • Griseliniaceae J.R.Forst. & G.Forst. ex A.Cunn.
    • Myodocarpaceae Doweld
    • Pennantiaceae J.Agardh
    • Pittosporaceae R.Br.
    • §Torricelliaceae Hu (including Aralidiaceae Philipson & B.C.Stone, Melanophyllaceae Takht. ex Airy Shaw)

Taxa of uncertain position[]

Phylogeny[]

The APG III system was based on a phylogenetic tree for the angiosperms which included all of the 59 orders and 4 of the unplaced families. The systematic positions of the other 6 unplaced families was so uncertain that they could not be placed in any of the polytomies in the tree. They are shown in the classification table entitled "Detailed version" above, 4 in Euasterids I and 2 in Taxa of uncertain position.

The phylogenetic tree shown below was published with the APG III system,[1] but without some of the labels that are added here.

angiosperms 

Amborellales

Nymphaeales

Austrobaileyales

Chloranthales

magnoliids 

Canellales

Piperales

Magnoliales

Laurales

monocots 

Acorales

Alismatales

Petrosaviales

Dioscoreales

Pandanales

Liliales

Asparagales

commelinids 

Dasypogonaceae

Arecales

Poales

Commelinales

Zingiberales

Ceratophyllales

eudicots 

Ranunculales

Sabiaceae

Proteales

Trochodendrales

Buxales

core eudicots 

Gunnerales

Dilleniaceae

Saxifragales

rosids 

Vitales

eurosids 
fabids 

Zygophyllales

Celastrales

Oxalidales

Malpighiales

Fabales

Rosales

Fagales

Cucurbitales

malvids 

Geraniales

Myrtales

Crossosomatales

Picramniales

Sapindales

Huerteales

Brassicales

Malvales

Berberidopsidales

Santalales

Caryophyllales

asterids 

Cornales

Ericales

euasterids 
lamiids 

Garryales

Boraginaceae

Gentianales

Solanales

Lamiales

campanulids 

Aquifoliales

Asterales

Escalloniales

Bruniales

Apiales

Paracryphiales

Dipsacales

Subfamilies replacing discontinued families[]

A number of subfamilies have been proposed to replace some of the families which were optional (i.e. bracketed) in APG II, but have been discontinued in APG III.[8] These are shown in the table below.

Subfamilies replacing APG II bracketed families
APG II bracketed family APG III family: subfamily
Agapanthaceae Amaryllidaceae: Agapanthoideae
Agavaceae Asparagaceae: Agavoideae
Alliaceae Amaryllidaceae: Allioideae
Amaryllidaceae Amaryllidaceae: Amaryllidoideae
Aphyllanthaceae Asparagaceae: Aphyllanthoideae
Asparagaceae Asparagaceae: Asparagoideae
Asphodelaceae Xanthorrhoeaceae: Asphodeloideae
Hemerocallidaceae Xanthorrhoeaceae: Hemerocallidoideae
Hesperocallidaceae Asparagaceae: Agavoideae
Hyacinthaceae Asparagaceae: Scilloideae
Laxmanniaceae Asparagaceae: Lomandroideae
Ruscaceae Asparagaceae: Nolinoideae
Themidaceae Asparagaceae: Brodiaeoideae
Xanthorrhoeaceae Xanthorrhoeaceae: Xanthorrhoeoideae

References[]

  1. ^ a b c Angiosperm Phylogeny Group (2009), "An update of the Angiosperm Phylogeny Group classification for the orders and families of flowering plants: APG III", Botanical Journal of the Linnean Society, 161 (2): 105–121, doi:10.1111/j.1095-8339.2009.00996.x
  2. ^ As easy as APG III - Scientists revise the system of classifying flowering plants, The Linnean Society of London, 2009-10-08, retrieved 2009-10-29
  3. ^ APG III tidies up plant family tree, Horticulture Week, 2009-10-08, retrieved 2009-10-29
  4. ^ Chase, Mark W. & Reveal, James L. (2009), "A phylogenetic classification of the land plants to accompany APG III", Botanical Journal of the Linnean Society, 161 (2): 122–127, doi:10.1111/j.1095-8339.2009.01002.x
  5. ^ Haston, E., Richardson, J.E., Stevens, P.F., Chase, M.W., Harris, D.J. (2009) The Linear Angiosperm Phylogeny Group (LAPG) III: a linear sequence of the families in APG III. Botanical Journal of the Linnean Society 161, 128–131.
  6. ^ Christenhusz, M. J. M., M. F. Fay, J. J. Clarkson, P. Gasson, J. Morales Can, J. B. Jimenez Barrios & M. W. Chase (2010). Petenaeaceae, a new angiosperm family in Huerteales with a distant relationship to Gerrardina (Gerrardinaceae), Botanical Journal of the Linnean Society 164: 16-25. http://onlinelibrary.wiley.com/doi/10.1111/j.1095-8339.2010.01074.x/abstract
  7. ^ Christenhusz, M. J. M., M. W. Chase, & M.F.Fay (2011). Preface to "Linear sequence, classification, synonymy, and bibliography of vascular plants: Lycophytes, ferns, gymnosperms and angiosperms", Phytotaxa 19: 4–6. http://www.mapress.com/phytotaxa/content/2011/f/pt00019p006.pdf
  8. ^ Chase, M.W.; Reveal, J.L. & Fay, M.F. (2009), "A subfamilial classification for the expanded asparagalean families Amaryllidaceae, Asparagaceae and Xanthorrhoeaceae", Botanical Journal of the Linnean Society, 161 (2): 132–136, doi:10.1111/j.1095-8339.2009.00999.x

External links[]

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