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Hamamelidales is an order of flowering plants formerly accepted in a number of systems of plant taxonomy, including the Cronquist system published in 1968 and 1988. The order is not currently accepted in the Angiosperm Phylogeny Group III system of plant taxonomy, the most widely accepted system as molecular systematic studies have suggested that these families are not closely related to each other.^[1]^[2] The APG II system (2003) assigns them to several different orders: Hamamelidaceae and Cercidiphyllaceae to Saxifragales, Eupteleaceae to Ranunculales, Platanaceae to Proteales, and Myrothamnaceae to Gunnerales.^[2] Additional studies of the chloroplast genome have since confirmed that the families moved into the Saxigragales are closely related.^[3]

The Cronquist system (1981) included the order in subclass Hamamelidae with the circumscription:

order Hamamelidales
family Hamamelidaceae, now order Saxifragales

family Cercidiphyllaceae, now order Saxifragales

family Eupteleaceae, now order Ranunculales

family Platanaceae, now order Proteales

family Myrothamnaceae, now order Gunnerales^[4]

References

^ 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.
^ ^a ^b "An update of the Angiosperm Phylogeny Group classification for the orders and families of flowering plants: APG II". doi:10.1046/j.1095-8339.2003.t01-1-00158.x. {{cite journal}}: Cite journal requires |journal= (help)
^ Dong, Wenpan; Chao Xu; Tao Cheng; Kui Lin; Shiliang Zhou (2013). "Sequencing Angiosperm Plastid Genomes Made Easy: A Complete Set of Universal Primers and a Case Study on the Phylogeny of Saxifragales". Genome Biology and Evolution. 5 (5): 989–997. doi:10.1093/gbe/evt063. PMC 3673619. PMID 23595020. Retrieved 4 October 2013.
^ Stevens, P. F. "Angiosperm Phylogeny Website". Missouri Botanical Garden. Retrieved 4 October 2013. {{cite web}}: |archive-date= requires |archive-url= (help); Check date values in: |archivedate= (help)

External links

An integrated system of classification of flowering plants by Arthur Cronquist at Google Books

[APGIII2009-1] 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.

[APGII2003-2] "An update of the Angiosperm Phylogeny Group classification for the orders and families of flowering plants: APG II". doi:10.1046/j.1095-8339.2003.t01-1-00158.x. {{cite journal}}: Cite journal requires |journal= (help)

[Dong-3] Dong, Wenpan; Chao Xu; Tao Cheng; Kui Lin; Shiliang Zhou (2013). "Sequencing Angiosperm Plastid Genomes Made Easy: A Complete Set of Universal Primers and a Case Study on the Phylogeny of Saxifragales". Genome Biology and Evolution. 5 (5): 989–997. doi:10.1093/gbe/evt063. PMC 3673619. PMID 23595020. Retrieved 4 October 2013.

[APGWeb-4] Stevens, P. F. "Angiosperm Phylogeny Website". Missouri Botanical Garden. Retrieved 4 October 2013. {{cite web}}: |archive-date= requires |archive-url= (help); Check date values in: |archivedate= (help)

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	'''Hamamelidales''' is an order of [[flowering plants]] formerly accepted in a number of [[Plant taxonomy#Classification systems\|systems of plant taxonomy]], including the [[Cronquist system]] published in 1968 and 1988. The order is not currently accepted in the [[APG III system\|Angiosperm Phylogeny Group III system]] of plant taxonomy, the most widely accepted system as molecular systematic studies have suggested that these families are not closely related to each other.<ref name=APGIII2009>{{Cite journal \|last=Angiosperm Phylogeny Group \|year=2009 \|title=An update of the Angiosperm Phylogeny Group classification for the orders and families of flowering plants: APG III \|journal=Botanical Journal of the Linnean Society \|volume=161 \|issue=2 \|pages=105–121 \|url=\|doi=10.1111/j.1095-8339.2009.00996.x }}</ref><ref name=APGII2003>{{cite journal\|doi=10.1046/j.1095-8339.2003.t01-1-00158.x\|title=An update of the Angiosperm Phylogeny Group classification for the orders and families of flowering plants: APG II }}</ref> The [[APG II system]] (2003) assigns them to several different orders: Hamamelidaceae and Cercidiphyllaceae to [[Saxifragales]], Eupteleaceae to [[Ranunculales]], Platanaceae to [[Proteales]], and Myrothamnaceae to [[Gunnerales]].<ref name=APGII2003/> Additional studies of the [[chloroplast]] genome have since confirmed that the families moved into the Saxigragales are closely related.<ref name=Dong>{{cite journal\|last=Dong\|first=Wenpan \|author2=Chao Xu \|author3=Tao Cheng \|author4=Kui Lin \|author5=Shiliang Zhou\|title=Sequencing Angiosperm Plastid Genomes Made Easy: A Complete Set of Universal Primers and a Case Study on the Phylogeny of Saxifragales\|journal=Genome Biology and Evolution\|year=2013\|volume=5\|issue=5\|pages=989–997\|url=http://gbe.oxfordjournals.org/content/5/5/989.full.pdf+html\|accessdate=4 October 2013\|doi=10.1093/gbe/evt063\|pmid=23595020 \|pmc=3673619 }}</ref>		'''Hamamelidales''' is an order of [[flowering plants]] formerly accepted in a number of [[Plant taxonomy#Classification systems\|systems of plant taxonomy]], including the [[Cronquist system]] published in 1968 and 1988. The order is not currently accepted in the [[APG III system\|Angiosperm Phylogeny Group III system]] of plant taxonomy, the most widely accepted system as molecular systematic studies have suggested that these families are not closely related to each other.<ref name=APGIII2009>{{Cite journal \|last=Angiosperm Phylogeny Group \|year=2009 \|title=An update of the Angiosperm Phylogeny Group classification for the orders and families of flowering plants: APG III \|journal=Botanical Journal of the Linnean Society \|volume=161 \|issue=2 \|pages=105–121 \|url=\|doi=10.1111/j.1095-8339.2009.00996.x \|doi-access=free }}</ref><ref name=APGII2003>{{cite journal\|doi=10.1046/j.1095-8339.2003.t01-1-00158.x\|title=An update of the Angiosperm Phylogeny Group classification for the orders and families of flowering plants: APG II \|doi-access=free}}</ref> The [[APG II system]] (2003) assigns them to several different orders: Hamamelidaceae and Cercidiphyllaceae to [[Saxifragales]], Eupteleaceae to [[Ranunculales]], Platanaceae to [[Proteales]], and Myrothamnaceae to [[Gunnerales]].<ref name=APGII2003/> Additional studies of the [[chloroplast]] genome have since confirmed that the families moved into the Saxigragales are closely related.<ref name=Dong>{{cite journal\|last=Dong\|first=Wenpan \|author2=Chao Xu \|author3=Tao Cheng \|author4=Kui Lin \|author5=Shiliang Zhou\|title=Sequencing Angiosperm Plastid Genomes Made Easy: A Complete Set of Universal Primers and a Case Study on the Phylogeny of Saxifragales\|journal=Genome Biology and Evolution\|year=2013\|volume=5\|issue=5\|pages=989–997\|url=http://gbe.oxfordjournals.org/content/5/5/989.full.pdf+html\|accessdate=4 October 2013\|doi=10.1093/gbe/evt063\|pmid=23595020 \|pmc=3673619 }}</ref>

	The [[Cronquist system]] (1981) included the order in subclass [[Hamamelidae]] with the [[wiktionary:circumscription\|circumscription]]:		The [[Cronquist system]] (1981) included the order in subclass [[Hamamelidae]] with the [[wiktionary:circumscription\|circumscription]]: