Editing Citrus (section)

=== Taxonomy ===

{{Main|Citrus taxonomy}}

Many cultivated ''Citrus'' species are [[hybrid (biology)|natural]] or [[Hybrid speciation|artificial hybrids]] of a small number of core ancestral species, including the citron, pomelo, and mandarin. Natural and cultivated [[citrus hybrid]]s include commercially important fruit such as oranges, [[grapefruit]], lemons, limes, and some [[tangerine]]s. The multiple hybridisations have made the taxonomy of ''Citrus'' complex.<ref>{{Cite book |last1=Klein |first1=Joshua D. |volume=2 |pages=199–214 |doi=10.1007/978-94-017-9276-9_10 |series=Medicinal and Aromatic Plants of the World |year=2014 |title=Medicinal and Aromatic Plants of the Middle-East |isbn=978-94-017-9275-2 |chapter=Citron Cultivation, Production and Uses in the Mediterranean Region}}</ref><ref name="Wu Terol Ibanez 2018">{{cite journal |last1=Wu |first1=Guohong Albert |last2=Terol |first2=Javier |last3=Ibanez |first3=Victoria |last4=López-García |first4=Antonio |last5=Pérez-Román |first5=Estela |last6=Borredá |first6=Carles |last7=Domingo |first7=Concha |last8=Tadeo |first8=Francisco R. |last9=Carbonell-Caballero |first9=Jose |last10=Alonso |first10=Roberto |last11=Curk |first11=Franck |last12=Du |first12=Dongliang |last13=Ollitrault |first13=Patrick |last14=Roose |first14=Mikeal L. Roose |last15=Dopazo |first15=Joaquin |last16=Gmitter Jr |first16=Frederick G. |last17=Rokhsar |first17=Daniel |last18=Talon |first18=Manuel |display-authors=6 |title=Genomics of the origin and evolution of ''Citrus'' |journal=[[Nature (journal)|Nature]] |year=2018 |volume=554 |issue=7692 |pages=311–316 |doi=10.1038/nature25447 |pmid=29414943 |bibcode=2018Natur.554..311W |doi-access=free |hdl=20.500.11939/5741 |hdl-access=free}} and Supplement</ref>

[[File:Hybrid origins of Citrus.svg|thumb|center|upright=3|Many ''Citrus'' species are [[Hybrid (biology)|hybrids]] of [[citron]], [[Mandarin orange|mandarin]] and [[pomelo]].<ref name="Wu Terol Ibanez 2018"/>]]

Apart from these core species, [[Australian lime]]s and the recently discovered [[mangshanyegan]] are grown. [[Kumquat]]s and ''[[Clymenia (plant)|Clymenia]]'' spp. are now generally considered to belong within the genus ''Citrus''.<ref name="AGLthesis">{{cite thesis |last=García Lor |first=Andrés |title=Organización de la diversidad genética de los cítricos |language=Spanish |trans-title=Organisation of the genetic diversity of the citruses |year=2013 |url=https://riunet.upv.es/bitstream/handle/10251/31518/Versión3.Tesis%20Andrés%20García-Lor.pdf |page=79}}</ref> The false oranges, ''[[Oxanthera]]'' from [[New Caledonia]], have been transferred to the ''Citrus'' genus on [[Phylogenetics|phylogenetic]] evidence.<ref name=bayer>Bayer, R. J., et al. (2009). [https://web.archive.org/web/20150331210237/http://www.amjbot.org/content/96/3/668.full A molecular phylogeny of the orange subfamily (Rutaceae: Aurantioideae) using nine cpDNA sequences.] ''American Journal of Botany'' 96(3), 668–685.</ref><ref name="POWO_35867-1">{{cite web |title=''Oxanthera'' Montrouz |work=Plants of the World Online |publisher=[[Royal Botanic Gardens, Kew]] |url=https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:35867-1 |access-date=10 September 2021}}</ref> A recent taxonomy reincorporates the trifoliate orange (''Poncirus'') into an enlarged ''Citrus'', but recognizes that many botanists still follow Swingle in splitting it off.<ref name="citrus taxonomy" />