Difference between revisions of "Crossosomatales"

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{{Automatic taxobox
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#redirect [[:Category:Crossosomatales]]
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| taxon = Crossosomatales
 
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| image = Staphylea colchica.jpg
 
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| image_caption = ''[[Staphylea colchica]]''
 
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| authority = [[Armen Takhtajan|Takht.]] ex [[James L. Reveal|Reveal]]<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=http://www3.interscience.wiley.com/journal/122630309/abstract | format= PDF |accessdate=2013-07-06 |doi=10.1111/j.1095-8339.2009.00996.x }}</ref>
 
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| subdivision_ranks = Families
 
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| subdivision =
 
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*[[Aphloiaceae]]
 
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*[[Crossosomataceae]]
 
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*[[Geissolomataceae]]
 
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*[[Guamatelaceae]]
 
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*[[Stachyuraceae]]
 
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*[[Staphyleaceae]]
 
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*[[Strasburgeriaceae]]
 
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}}
 
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The '''Crossosomatales''' are an order, newly recognized by the [[Angiosperm Phylogeny Group|APG II]], of [[flowering plant]]s, included within the [[Rosids]], which are part of the [[eudicots]].
 
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== Description ==
 
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The species assigned to the Crossosomatales have in common that the flowers are positioned solitary, with the base of the [[Sepal|calyx]], [[Petal|corolla]], and [[stamen]]s fused into a tube-shaped [[hypanthium|floral cup]], the sepals overlapping, with the outermost smaller than inner ones. The inside of the casings of the [[pollen]] grains have horizontally extended thin regions (or [[Pollen#Structure|endo-apertures]]). The [[gynoecium]] is placed on a short stalk<!---, postgenitally united carpel tips forming a compitum - unknown what a compitum in botany is--->, the [[Stigma (botany)#Structure|papillae on the stigma]] consist of two or more cells, the [[Ovary (botany)#Parts of the ovary|ovary]] [[locule]]s taper upwards, and the protective cell layer (or [[Ovule#Integuments, micropyle and chalaza|integument]]) surrounding the [[ovule]] leaves a zigzag opening (or [[Ovule#Integuments, micropyle and chalaza|micropyle]]). Some cell clusters have bundles of long yellow crystals, [[mucilage]] cells are present, and seeds have a smooth, woody seed skin.<ref>{{cite journal|author = Matthews M.R, Endress P.K |year = 2005|title = Comparative floral structure and systematics in Crossosomatales (Crossosomataceae, Stachyuraceae, Staphyleaceae, Aphloiaceae, Geissolomataceae, Ixerbaceae, Strasburgeriaceae)|journal = Botanical Journal of the Linnean Society|volume = 147|issue = 1|pages= 1–46|doi = 10.1111/j.1095-8339.2005.00347.x}}</ref>
 
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== Taxonomy ==
 
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The relationships between the orders is the Malvid clade according to the APG system is represented by the following tree.<ref name=apweb>{{cite web|author= Peter F. Stevens|date = 2001|url = http://www.mobot.org/MOBOT/Research/APweb/welcome.html|title= Angiosperm Phylogeny Website}}</ref>
 
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{{clade|style= font-size:100%;line-height:100%
 
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|label1=Malvids
 
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|1={{clade
 
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|1={{clade
 
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        |1=[[Geraniales]]
 
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        |2=[[Myrtales]]
 
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        }}
 
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      |2={{clade
 
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        |1='''Crossosomatales'''
 
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        |2={{clade
 
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            |1=[[Picramniales]]
 
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            |2={{clade
 
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              |1=[[Sapindales]]
 
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              |2={{clade
 
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                  |1=[[Huerteales]]
 
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                  |2={{clade
 
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                    |1=[[Brassicales]]
 
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                    |2=[[Malvales]]
 
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                    }}
 
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                  }}
 
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              }}
 
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            }}
 
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        }}
 
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      }}
 
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  }}
 
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Within the Crossosomatales, the [[APG III system]] of 2009 recognises the families that are represented in following tree, which is based the most recent insights in the relationships within the Crossosomatales.<ref>{{cite journal|last= Oh|first= S.H.|year= 2010|title= Phylogeny and systematics of Crossosomatales as inferred from chloroplast atpB, matK, and rbcL sequences|journal= Korean Journal of Plant Taxonomy|volume= 40|issue= 4|pages= 208–217}}</ref>
 
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{{clade|style= font-size:100%;line-height:100%
 
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|label1='''Crossosomatales'''
 
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|1={{clade
 
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  |1={{Clade
 
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      |1={{Clade
 
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        |1={{Clade
 
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            |1=[[Strasburgeriaceae]]
 
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            |2=[[Geissolomataceae]]
 
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            }}
 
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        }}
 
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      |2=[[Aphloiaceae]]
 
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      }}
 
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  |2={{Clade
 
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      |1=[[Staphyleaceae]]
 
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      |2={{Clade
 
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        |1=[[Guamatelaceae]]
 
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        |2={{Clade
 
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            |1=[[Stachyuraceae]]
 
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            |2=[[Crossosomataceae]]
 
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            }}
 
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        }}
 
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      }}
 
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  }}
 
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}}
 
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== References ==
 
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{{reflist}}
 
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* [http://www.mobot.org/MOBOT/Research/APweb/welcome.html Angiosperm Phylogeny website]
 
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[[Category:Crossosomatales| ]]
 
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[[Category:Rosid orders]]
 
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{{rosid-stub}}
 

Latest revision as of 19:53, 8 September 2017

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