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From Wikipedia, the free encyclopedia

Commelinids
Dactylis glomerata bluete2.jpeg
Cock's-foot grass (Dactylis glomerata)
Scientific classification e
Kingdom: Plantae
Clade: Angiosperms
Clade: Monocots
Clade: Commelinids
Orders
Diversity[citation needed]
About 1,420 genera

In plant taxonomy, commelinids (originally commelinoids[1][2]) (plural, not capitalised) is a name used by the APG IV system for a clade within the monocots, which in its turn is a clade within the angiosperms. The commelinids are the only clade that the APG has informally named within the monocots. The remaining monocots are a paraphyletic unit. Also known as the commelinid monocots it forms one of three groupings within the monocots, and the final branch, the other two groups being the alismatid monocots and the lilioid monocots.

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Transcription

Contents

Description

Members of the commelinid clade have cell walls containing UV-fluorescent ferulic acid.[3][4]

Taxonomy

The commelinids were first recognized as a formal group in 1967 by Armen Takhtajan, who named them the Commelinidae and assigned them to a subclass of the monocots.[5] However, by the release of his 1980 system of classification, he had merged this subclass into a larger one no longer considered to be a clade.

The commelinids constitute a well-supported clade within the monocots,[6] and this clade has been recognized in all four APG classification systems.

Cladogram 1: The phylogenetic composition of the monocots[7]
monocots 131


          

 Acorales 




 Alismatales 


122
          

 Petrosaviales 



120

 Dioscoreales 115 



 Pandanales 91 





 Liliales 121 


121

 Asparagales 120 


commelinids 118
          

 Arecales



 Poales



          

 Zingiberales



 Commelinales












Alismatid monocots

Subdivision

The commelinids of APG II (2003) and APG III (2009) contain essentially the same plants as the commelinoids of the earlier APG system (1998).[6] In APG IV (2016) the family Dasypogonaceae is no longer directly placed under commelinids but instead a family of order Arecales.[7]

clade monocots :
  • clade commelinids:
commelinids

Arecales



Poales





Zingiberales



Commelinales





The current phylogeny and composition of the commelinids.[8]

References

  1. ^ APG (1998). "An ordinal classification for the families of flowering plants". Annals of the Missouri Botanical Garden. 85 (4): 531–553. JSTOR 2992015. doi:10.2307/2992015. 
  2. ^ APG II (2003). "An Update of the Angiosperm Phylogeny Group Classification for the orders and families of flowering plants: APG II". Botanical Journal of the Linnean Society. 141 (4): 399–436. doi:10.1046/j.1095-8339.2003.t01-1-00158.x. 
  3. ^ Harris & Hartley 1976.
  4. ^ Dahlgren, R. M. T.; Rassmussen, F. (1983). "Monocotyledon evolution. Characters and phylogenetic estimation". Evol. Biol. 16: 255–395. 
  5. ^ Takhtajan, A. (1967). Система и филогения цветкорых растений (Systema et Phylogenia Magnoliophytorum). Moscow: Nauka. 
  6. ^ a b Cantino, Philip D.; James A. Doyle; Sean W. Graham; Walter S. Judd; Richard G. Olmstead; Douglas E. Soltis; Pamela S. Soltis; Michael J. Donoghue (2007). "Towards a phylogenetic nomenclature of Tracheophyta". Taxon. 56 (3): E1–E44. doi:10.2307/25065865. 
  7. ^ a b APG IV 2016.
  8. ^ "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: 105–121. 2009. doi:10.1111/j.1095-8339.2009.00996.x. 

Bibliography

External links

Media related to Commelinids at Wikimedia Commons

This page was last edited on 30 August 2017, at 18:03.
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