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.
| Coreopsideae | |
|---|---|
| |
| Cosmos bipinnatus field | |
Scientific classification 
| |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Asterids |
| Order: | Asterales |
| Family: | Asteraceae |
| Subfamily: | Asteroideae |
| Tribe: | Coreopsideae (Less.) Lindl. |
| Genera | |
|
See text | |
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
editThe 26 Coreopsideae genera recognized by the Global Compositae Database as of April 2022:[7]
- Bidens L.
- Chrysanthellum Rich.
- Coreopsis L. – Electranthera was subsequently split off[8]
- 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
References
edit- ^ Asteroideae - Taxonomy
- ^ a b 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
- ^ Klaus Kubitzki, Joachim W. Kadereit, Charles Jeffrey; The Families and Genera of Vascular Plants
- ^ 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
- ^ Niehaus, Theodore F.; Ripper, Charles L. (1976), Pacific States Wildflowers, New York: Houghton Mifflin, ISBN 0-395-91095-1
- ^ Kellogg, E.A. (1999). "Phylogenetic aspects of the evolution of C4 photosynthesis". In Sage, R.F.; Monson, R.K. (eds.). C4 plant biology (PDF). San Diego, CA: Academic Press. pp. 411–444. ISBN 0126144400. Retrieved 2018-05-26.
- ^ "Coreopsideae Lindl". Global Compositae Database. Compositae Working Group (CWG). Retrieved 2022-04-04.
- ^ Pruski, J.F.; Tadesse, Mesfin & Crawford, D.J. (2015), "Studies of Neotropical Compositae–XI. The new generic name Electranthera (Coreopsideae)" (PDF), Phytoneuron, 2015–68: 1–17, retrieved 2024-05-13
External links
edit
Media related to Coreopsideae at Wikimedia Commons
Data related to Coreopsideae at Wikispecies
