Coreopsideae
| Coreopsideae | |
|---|---|
| File:Cosmos 001.JPG | |
| Cosmos bipinnatus field | |
| Scientific classification Edit this classification | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Asterids |
| Order: | Asterales |
| Family: | Asteraceae |
| Subfamily: | Asteroideae |
| Tribe: | Coreopsideae (Less.) Lindl. |
| Genera | |
|
See text | |
Coreopsideae is a tribe of flowering plants belonging to the Asteroideae subfamily.[1] It includes widely cultivated genera such as Coreopsis, after which the tribe is named, as well 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
[edit | edit source]The 27 Coreopsideae genera recognized by the Global Compositae Database as of March 2025:[7]
- Bidens L.
- Chrysanthellum Rich.
- Coreocarpus Benth.
- Coreopsis L.
- Cosmos Cav.
- Cyathomone S.F.Blake
- Dahlia Cav.
- Dicranocarpus A.Gray
- Diodontium F.Muell.
- Ericentrodea S.F.Blake
- Fitchia Hook.f.
- Glossocardia Cass.
- Goldmanella Greenm.
- Henricksonia B.L.Turner
- Heterosperma Cav.
- Hidalgoa La Llave
- Isostigma Less.
- Koehneola Urb.
- Moonia Arn.
- Narvalina Cass.
- Oparanthus Sherff
- Petrobium R.Br.
- Pinillosia Ossa ex DC.
- Selleophytum Urb.
- Tetraperone Urb.
- Thelesperma Less.
- Trioncinia (F.Muell.) Veldkamp
Plants of the World Online accepts the genera Anacis Schrank,[8]Electranthera Mesfin, D.J.Crawford & Pruski,[9][10] Epilepis Benth.,[11] Leptosyne DC.,[12] and Silphidium (Torr. & A.Gray) Mesfin & D.J.Crawford,[13] and treats Selleophytum as a synonym of Coreopsis.[14]
References
[edit | edit source]- ^ Asteroideae - Taxonomy
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- ^ Klaus Kubitzki, Joachim W. Kadereit, Charles Jeffrey; The Families and Genera of Vascular Plants
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External links
[edit | edit source]- Error creating thumbnail: File missing Media related to Lua error in Module:Commons_link at line 62: attempt to index field 'wikibase' (a nil value). at Wikimedia Commons
- File:Wikispecies-logo.svg Data related to Coreopsideae at Wikispecies
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