Coreopsideae





















Coreopsideae

Cosmos 001.JPG

Cosmos bipinnatus field

Scientific classification edit
Kingdom:
Plantae

Clade:
Angiosperms

Clade:
Eudicots

Clade:
Asterids
Order:
Asterales
Family:
Asteraceae
Subfamily:
Asteroideae
Supertribe:
Helianthodae
Tribe:
Coreopsideae
(Less.) Lindl., 1829
Genera

See text


Coreopsideae is a tribe of flowering plants belonging to the Asteroideae subfamily.[1] It includes widely cultivated genera such as Cosmos and Dahlia.


A similar group has been recognized since 1829, generally as part of the tribe Heliantheae (Cassini, 1819).[2] In the late 20th century, molecular studies caused a slightly redefined version of this group to be recognized as its own tribe, Coreopsideae.[2] The larger version of Heliantheae was split into tribes including Bahieae, Chaenactideae, Coreopsideae, Helenieae and, finally, Heliantheae (sensu stricto).[3] Within the tribe, the traditional definition of genera based on flower and fruit characters does not reflect evolutionary relationships as inferred through molecular phylogenetics.[4]


The tribe is characterized by shiny green bracts at the base of the flower head in two rows: an inner row of tightly spaced bracts and an outer row of a smaller number pointing downward.[5] It includes five genera that use C4 carbon fixation: Chrysanthellum, Eryngiophyllum, Glossocardia (including Guerreroia), Isostigma, and Neuractis. These genera are thought to share a common ancestor and thus a single origin of C4 carbon fixation.[6]



Genera



  • Bidens


  • Chrysanthellum (C4[6])

  • Coreocarpus

  • Coreopsis

  • Cosmos

  • Dahlia

  • Dicranocarpus

  • Ericentrodea


  • Eryngiophyllum (C4[6])

  • Fitchia

  • Glossogyne


  • Glossocardia (C4[6])

  • Goldmanella

  • Henricksonia

  • Heterosperma


  • Isostigma (C4[6])

  • Megalodonta

  • Narvalina


  • Neuractis (C4[6])

  • Oparanthus

  • Petrobium

  • Selleophytum

  • Thelesperma



References




  1. ^ Asteroideae - Taxonomy


  2. ^ ab Ryding, Olof; Bremer, Kare (1992), "Phylogeny, Distribution, and Classification of the Coreopsideae (Asteraceae)", Systematic Botany, 17 (4): 649–659, doi:10.2307/2419733, JSTOR 2419733.mw-parser-output cite.citationfont-style:inherit.mw-parser-output qquotes:"""""""'""'".mw-parser-output code.cs1-codecolor:inherit;background:inherit;border:inherit;padding:inherit.mw-parser-output .cs1-lock-free abackground:url("//upload.wikimedia.org/wikipedia/commons/thumb/6/65/Lock-green.svg/9px-Lock-green.svg.png")no-repeat;background-position:right .1em center.mw-parser-output .cs1-lock-limited a,.mw-parser-output .cs1-lock-registration abackground:url("//upload.wikimedia.org/wikipedia/commons/thumb/d/d6/Lock-gray-alt-2.svg/9px-Lock-gray-alt-2.svg.png")no-repeat;background-position:right .1em center.mw-parser-output .cs1-lock-subscription abackground:url("//upload.wikimedia.org/wikipedia/commons/thumb/a/aa/Lock-red-alt-2.svg/9px-Lock-red-alt-2.svg.png")no-repeat;background-position:right .1em center.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registrationcolor:#555.mw-parser-output .cs1-subscription span,.mw-parser-output .cs1-registration spanborder-bottom:1px dotted;cursor:help.mw-parser-output .cs1-hidden-errordisplay:none;font-size:100%.mw-parser-output .cs1-visible-errorfont-size:100%.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registration,.mw-parser-output .cs1-formatfont-size:95%.mw-parser-output .cs1-kern-left,.mw-parser-output .cs1-kern-wl-leftpadding-left:0.2em.mw-parser-output .cs1-kern-right,.mw-parser-output .cs1-kern-wl-rightpadding-right:0.2em


  3. ^ Klaus Kubitzki, Joachim W. Kadereit, Charles Jeffrey; The Families and Genera of Vascular Plants


  4. ^ Rebecca T. Kimballa, Daniel J. Crawford (2004), "Phylogeny of Coreopsideae (Asteraceae) using ITS sequences suggests lability in reproductive characters", Molecular Phylogenetics and Evolution, 33 (1): 127–139, doi:10.1016/j.ympev.2004.04.022, PMID 15324843


  5. ^ Niehaus, Theodore F.; Ripper, Charles L. (1976), Pacific States Wildflowers, New York: Houghton Mifflin, ISBN 0-395-91095-1


  6. ^ abcdef Kellogg, E.A. (1999). "Phylogenetic aspects of the evolution of C4 photosynthesis". In Sage, R.F.; Monson, R.K. C4 plant biology (PDF). San Diego, CA: Academic Press. pp. 411–444. ISBN 0126144400. Retrieved 2018-05-26.




External links


Media related to Coreopsideae at Wikimedia Commons
Data related to Coreopsideae at Wikispecies









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