Coreopsideae

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Coreopsideae
Cosmos 001.JPG
Cosmos bipinnatus field
Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Eudicots
(unranked): 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]

Classification[edit]

This tribe includes genera like Cosmos and Dahlia.[2]

A similar group has been recognized since 1829, generally as part of the tribe Heliantheae (Cassini, 1819).[3] In the late 20th century, molecular studies caused a slightly redefined version of this group to be recognized as its own tribe, Coreopsideae.[3] The larger version of Heliantheae was split into tribes including Bahieae, Chaenactideae, Coreopsideae, Helenieae and, finally, Heliantheae (sensu stricto).[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]

Genera[edit]

References[edit]

  1. ^ Asteroideae - Taxonomy
  2. ^ Pyrrolizidine alkaloids from Neurolaena lobata
  3. ^ a b Ryding, Olof; Bremer, Kare (1992), "Phylogeny, Distribution, and Classification of the Coreopsideae (Asteraceae)", Systematic Botany, 17 (4): 649–659, JSTOR 2419733, doi:10.2307/2419733 
  4. ^ Klaus Kubitzki, Joachim W. Kadereit, Charles Jeffrey; The Families and Genera of Vascular Plants
  5. ^ Niehaus, Theodore F.; Ripper, Charles L. (1976), Pacific States Wildflowers, New York: Houghton Mifflin, ISBN 0-395-91095-1 

Bibliography[edit]

  • 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, PMID 15324843, doi:10.1016/j.ympev.2004.04.022 

External links[edit]

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