New linear systematic sequence for vascular plants

The Western Australian Herbarium is updating its sequence and arrangement of collections as part of the move to a new Biodiversity Science Centre. The new systematic sequence is based on the work of the Angiosperm Phylogeny Group (APGIII), a large-scale collaborative ordinal classification of angiosperms based on recent molecular phylogenetic research.

For the ferns, fern allies, and gymnosperms (obviously not covered in the work of the APG) we have utilised David Mabberley's arrangement as published in the most recent edition of his Plant-Book. (Interestingly, the previous arrangement of families at the WA Herbarium was based on the Engler and Prantl sequence as published J.C. Willis' A Dictionary of the Flowering Plants and Ferns in 1919; Mabberley's Plant-Book is a direct descendent of Willis' work.) Mabberley in turn uses Smith et al. (2006) as his reference for fern phylogeny.

A small number of modifications to the globally accepted list of plant families were made for national use by the Australian Plant Census (APC) team, which base their work on Mabberley's angiosperm sequence, which is intermediate between APGII (2003) and APGIII (2009). These respective sources are indicated for each family in Table 1 below.

Many herbaria around the world are adopting the version 3 of the APG's phylogenetic arrangement of families as a means for reordering not only their Census but the physical collection. The work of Haston et al. (2009) in developing a linear sequence, based on the results of APGIII phylogeny, is significant because it is expected that, at these higher levels of the classification, the sequence will be relatively stable into the future.

NB. The linear sequence number is simply a mechanism for putting plant families into a systematic order for use in grouping and reporting. It is a number that will change as needed for the purposes of managing the WA Herbarium's information and collection - it is not a replacement for the WA Herbarium's old 'Family Number', which is now entirely deprecated. It is assigned as a real number in order to interleave new families if required without entirely changing the sequence order or its abilty to sort numerically (a widely recognised problem with the previous alphanumeric formulation of Family Number).

Our plan is to adopt a 'punctuated equilibrium model' whereby we will base our sequence on widely available collaborative syntheses such as those listed below. We do not intend to change the family sequence based on the very latest research as it appears, but rather wait for the next major synthesis to be published. In this way we can provide step-wise improvement in systematic knowledge while providing a stable documented reference.

References

Table 1. Systematic sequence of vascular plant families occurring in Western Australia
SequenceWA FamilyOrderGroupSource
1.00LycopodiaceaeLycopodialesfern allyMabberley
2.00IsoetaceaeIsoetalesfern allyMabberley
3.00SelaginellaceaeSelaginellalesfern allyMabberley
4.00PsilotaceaePsilotalesfernMabberley
5.00OphioglossaceaeOphioglossalesfernMabberley
10.00GleicheniaceaeGleichenialesfernMabberley
13.00LygodiaceaeSchizaealesfernMabberley
15.00SchizaeaceaeSchizaealesfernMabberley
16.00MarsileaceaeSalvinialesfernMabberley
17.00SalviniaceaeSalvinialesfernMabberley
23.00CyatheaceaeCyathealesfernMabberley
26.00LindsaeaceaePolypodialesfernMabberley
28.00DennstaedtiaceaePolypodialesfernMabberley
29.00PteridaceaePolypodialesfernMabberley
30.00AspleniaceaePolypodialesfernMabberley
32.00ThelypteridaceaePolypodialesfernMabberley
33.00BlechnaceaePolypodialesfernMabberley
35.00DryopteridaceaePolypodialesfernMabberley
36.00LomariopsidaceaePolypodialesfernMabberley
40.00PolypodiaceaePolypodialesfernMabberley
41.00CycadaceaeCycadalesgymnospermMabberley
42.00ZamiaceaeCycadalesgymnospermMabberley
44.00PinaceaePinalesgymnospermMabberley
49.00PodocarpaceaePinalesgymnospermMabberley
52.00CupressaceaePinalesgymnospermMabberley
54.00HydatellaceaeNymphaealesbasal angiospermAPGIII
56.00NymphaeaceaeNymphaealesbasal angiospermAPGIII
64.00PiperaceaePiperalesmagnoliidAPGIII
67.00AristolochiaceaePiperalesmagnoliidAPGIII
68.00MyristicaceaeMagnolialesmagnoliidAPGIII
73.00AnnonaceaeMagnolialesmagnoliidAPGIII
78.00HernandiaceaeLauralesmagnoliidAPGIII
80.00LauraceaeLauralesmagnoliidAPGIII
82.00AraceaeAlismatalesmonocotsAPGIII
84.00AlismataceaeAlismatalesmonocotsAPGIII
86.00HydrocharitaceaeAlismatalesmonocotsAPGIII
88.00AponogetonaceaeAlismatalesmonocotsAPGIII
89.00JuncaginaceaeAlismatalesmonocotsAPGIII
90.00ZosteraceaeAlismatalesmonocotsAPGIII
91.00PotamogetonaceaeAlismatalesmonocotsAPGIII
92.00PosidoniaceaeAlismatalesmonocotsAPGIII
93.00RuppiaceaeAlismatalesmonocotsAPGIII
94.00CymodoceaceaeAlismatalesmonocotsAPGIII
97.00BurmanniaceaeDioscorealesmonocotsAPGIII
98.00TaccaceaeDioscorealesmonocotsAPC
99.00DioscoreaceaeDioscorealesmonocotsAPGIII
102.00StemonaceaePandanalesmonocotsAPGIII
104.00PandanaceaePandanalesmonocotsAPGIII
108.00AlstroemeriaceaeLilialesmonocotsAPGIII
109.00ColchicaceaeLilialesmonocotsAPGIII
112.00SmilacaceaeLilialesmonocotsAPGIII
115.00OrchidaceaeAsparagalesmonocotsAPGIII
116.00BoryaceaeAsparagalesmonocotsAPGIII
120.00HypoxidaceaeAsparagalesmonocotsAPGIII
121.00TecophilaeaceaeAsparagalesmonocotsAPGIII
124.00IridaceaeAsparagalesmonocotsAPGIII
126.00XanthorrhoeaceaeAsparagalesmonocotsAPGIII
127.00AmaryllidaceaeAsparagalesmonocotsAPC
128.00AsparagaceaeAsparagalesmonocotsAPGIII
129.00AsphodelaceaeAsparagalesmonocotsAPC
130.00HemerocallidaceaeAsparagalesmonocotsAPC
131.00AlliaceaeAsparagalesmonocotsAPC
132.00AgapanthaceaeAsparagalesmonocotsAPC
133.00ArecaceaeArecalescommelinidsAPGIII
135.00CommelinaceaeCommelinalescommelinidsAPGIII
136.00PhilydraceaeCommelinalescommelinidsAPGIII
137.00PontederiaceaeCommelinalescommelinidsAPGIII
138.00HaemodoraceaeCommelinalescommelinidsAPGIII
142.00MusaceaeZingiberalescommelinidsAPGIII
143.00CannaceaeZingiberalescommelinidsAPGIII
147.00DasypogonaceaeDasypogonalescommelinidsAPGIII
148.00TyphaceaePoalescommelinidsAPGIII
151.00XyridaceaePoalescommelinidsAPGIII
152.00EriocaulaceaePoalescommelinidsAPGIII
155.00JuncaceaePoalescommelinidsAPGIII
156.00CyperaceaePoalescommelinidsAPGIII
157.00AnarthriaceaePoalescommelinidsAPGIII
158.00CentrolepidaceaePoalescommelinidsAPGIII
159.00RestionaceaePoalescommelinidsAPGIII
160.00FlagellariaceaePoalescommelinidsAPGIII
162.00EcdeiocoleaceaePoalescommelinidsAPGIII
163.00PoaceaePoalescommelinidsAPGIII
164.00CeratophyllaceaeCeratophyllaleseudicotAPGIII
166.00PapaveraceaeRanunculaleseudicotAPGIII
169.00MenispermaceaeRanunculaleseudicotAPGIII
171.00RanunculaceaeRanunculaleseudicotAPGIII
174.00PlatanaceaeProtealeseudicotAPGIII
175.00ProteaceaeProtealeseudicotAPGIII
181.00DilleniaceaeDillenialescore eudicotAPGIII
192.00CrassulaceaeSaxifragalescore eudicotAPGIII
193.00AphanopetalaceaeSaxifragalescore eudicotAPGIII
196.00HaloragaceaeSaxifragalescore eudicotAPGIII
197.00VitaceaeVitalesrosidAPGIII
199.00ZygophyllaceaeZygophyllaleseurosids IAPGIII
201.00FabaceaeFabaleseurosids IAPGIII
202.00SurianaceaeFabaleseurosids IAPGIII
203.00PolygalaceaeFabaleseurosids IAPGIII
204.00RosaceaeRosaleseurosids IAPGIII
208.00RhamnaceaeRosaleseurosids IAPGIII
210.00CannabaceaeRosaleseurosids IAPGIII
211.00MoraceaeRosaleseurosids IAPGIII
212.00UrticaceaeRosaleseurosids IAPGIII
217.00CasuarinaceaeFagaleseurosids IAPGIII
220.00ApodanthaceaeCucurbitaleseurosids IAPGIII
224.00CucurbitaceaeCucurbitaleseurosids IAPGIII
229.00CelastraceaeCelastraleseurosids IAPGIII
232.00OxalidaceaeOxalidaleseurosids IAPGIII
234.00ElaeocarpaceaeOxalidaleseurosids IAPGIII
235.00CephalotaceaeOxalidaleseurosids IAPGIII
238.00RhizophoraceaeMalpighialeseurosids IAPGIII
239.00ErythroxylaceaeMalpighialeseurosids IAPGIII
242.00EuphorbiaceaeMalpighialeseurosids IAPGIII
246.00PicrodendraceaeMalpighialeseurosids IAPGIII
247.00PhyllanthaceaeMalpighialeseurosids IAPGIII
248.00ElatinaceaeMalpighialeseurosids IAPGIII
254.00ChrysobalanaceaeMalpighialeseurosids IAPGIII
256.00PutranjivaceaeMalpighialeseurosids IAPGIII
257.00PassifloraceaeMalpighialeseurosids IAPGIII
258.00TurneraceaeMalpighialeseurosids IAPC
260.00SalicaceaeMalpighialeseurosids IAPGIII
261.00ViolaceaeMalpighialeseurosids IAPGIII
267.00LinaceaeMalpighialeseurosids IAPGIII
270.00ClusiaceaeMalpighialeseurosids IAPGIII
272.00PodostemaceaeMalpighialeseurosids IAPGIII
273.00HypericaceaeMalpighialeseurosids IAPGIII
274.00GeraniaceaeGeranialesrosidAPGIII
276.00MelianthaceaeGeranialesrosidAPGIII
277.00CombretaceaeMyrtalesrosidAPGIII
278.00LythraceaeMyrtalesrosidAPGIII
279.00OnagraceaeMyrtalesrosidAPGIII
281.00MyrtaceaeMyrtalesrosidAPGIII
282.00MelastomataceaeMyrtalesrosidAPGIII
295.00NitrariaceaeSapindaleseurosids IIAPGIII
297.00BurseraceaeSapindaleseurosids IIAPGIII
298.00AnacardiaceaeSapindaleseurosids IIAPGIII
299.00SapindaceaeSapindaleseurosids IIAPGIII
300.00RutaceaeSapindaleseurosids IIAPGIII
301.00SimaroubaceaeSapindaleseurosids IIAPGIII
302.00MeliaceaeSapindaleseurosids IIAPGIII
309.00MalvaceaeMalvaleseurosids IIAPGIII
311.00ThymelaeaceaeMalvaleseurosids IIAPGIII
312.00BixaceaeMalvaleseurosids IIAPGIII
317.00TropaeolaceaeBrassicaleseurosids IIAPGIII
318.00MoringaceaeBrassicaleseurosids IIAPGIII
323.00BataceaeBrassicaleseurosids IIAPGIII
325.00EmblingiaceaeBrassicaleseurosids IIAPGIII
328.00GyrostemonaceaeBrassicaleseurosids IIAPGIII
329.00ResedaceaeBrassicaleseurosids IIAPGIII
330.00CapparaceaeBrassicaleseurosids IIAPGIII
331.00CleomaceaeBrassicaleseurosids IIAPGIII
332.00BrassicaceaeBrassicaleseurosids IIAPGIII
336.00OlacaceaeSantalalescore eudicotAPGIII
337.00OpiliaceaeSantalalescore eudicotAPGIII
338.00SantalaceaeSantalalescore eudicotAPGIII
339.00LoranthaceaeSantalalescore eudicotAPGIII
342.00FrankeniaceaeCaryophyllalescore eudicotAPGIII
343.00TamaricaceaeCaryophyllalescore eudicotAPGIII
344.00PlumbaginaceaeCaryophyllalescore eudicotAPGIII
345.00PolygonaceaeCaryophyllalescore eudicotAPGIII
346.00DroseraceaeCaryophyllalescore eudicotAPGIII
355.00CaryophyllaceaeCaryophyllalescore eudicotAPGIII
357.00AmaranthaceaeCaryophyllalescore eudicotAPGIII
358.00ChenopodiaceaeCaryophyllalescore eudicotAPC
364.00AizoaceaeCaryophyllalescore eudicotAPGIII
365.00PhytolaccaceaeCaryophyllalescore eudicotAPGIII
367.00NyctaginaceaeCaryophyllalescore eudicotAPGIII
368.00MolluginaceaeCaryophyllalescore eudicotAPGIII
371.00BasellaceaeCaryophyllalescore eudicotAPGIII
374.00PortulacaceaeCaryophyllalescore eudicotAPGIII
375.00CactaceaeCaryophyllalescore eudicotAPGIII
382.00BalsaminaceaeEricalesasteridsAPGIII
386.00PolemoniaceaeEricalesasteridsAPGIII
387.00LecythidaceaeEricalesasteridsAPGIII
390.00SapotaceaeEricalesasteridsAPGIII
391.00EbenaceaeEricalesasteridsAPGIII
392.00PrimulaceaeEricalesasteridsAPGIII
403.00EricaceaeEricalesasteridsAPGIII
409.00RubiaceaeGentianaleseuasterids IAPGIII
410.00GentianaceaeGentianaleseuasterids IAPGIII
411.00LoganiaceaeGentianaleseuasterids IAPGIII
413.00ApocynaceaeGentianaleseuasterids IAPGIII
415.00BoraginaceaeEuasterids Ieuasterids IAPGIII
416.00ConvolvulaceaeSolanaleseuasterids IAPGIII
417.00SolanaceaeSolanaleseuasterids IAPGIII
419.00SphenocleaceaeSolanaleseuasterids IAPGIII
420.00HydroleaceaeSolanaleseuasterids IAPGIII
423.00OleaceaeLamialeseuasterids IAPGIII
427.00PlantaginaceaeLamialeseuasterids IAPGIII
428.00ScrophulariaceaeLamialeseuasterids IAPGIII
430.00LinderniaceaeLamialeseuasterids IAPGIII
431.00PedaliaceaeLamialeseuasterids IAPGIII
432.00LamiaceaeLamialeseuasterids IAPGIII
433.00PhrymaceaeLamialeseuasterids IAPGIII
435.00OrobanchaceaeLamialeseuasterids IAPGIII
436.00LentibulariaceaeLamialeseuasterids IAPGIII
437.00AcanthaceaeLamialeseuasterids IAPGIII
438.00BignoniaceaeLamialeseuasterids IAPGIII
441.00VerbenaceaeLamialeseuasterids IAPGIII
442.00ByblidaceaeLamialeseuasterids IAPGIII
443.00MartyniaceaeLamialeseuasterids IAPGIII
448.00AquifoliaceaeAquifolialeseuasterids IIAPGIII
450.00CampanulaceaeAsteraleseuasterids IIAPGIII
452.00StylidiaceaeAsteraleseuasterids IIAPGIII
457.00MenyanthaceaeAsteraleseuasterids IIAPGIII
458.00GoodeniaceaeAsteraleseuasterids IIAPGIII
460.00AsteraceaeAsteraleseuasterids IIAPGIII
462.00EremosynaceaeEscallonialeseuasterids IIAPC
467.00CaprifoliaceaeDipsacaleseuasterids IIAPGIII
471.00PittosporaceaeApialeseuasterids IIAPGIII
472.00AraliaceaeApialeseuasterids IIAPGIII
474.00ApiaceaeApialeseuasterids IIAPGIII

Written by Alex Chapman, Cheryl Parker and Louise Biggs; 16 April 2010.

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