False orange: Difference between revisions
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Though previously viewed as members of ''Citrus'', Swingle moved the false oranges into their own genus, ''Oxanthera''. He placed the genus within the Triphasiinae subtribe of [[Citreae]] based on the similar size of their fruit. However, subsequent [[Phylogenetics|phylogenetic]] analysis showed them to cluster in the Citrinae subtribe within the same clade as Swingle's genus ''[[Clymenia (plant)|Clymenia]]'' and the [[Australian lime]]s, as members of an enlarged monophyletic ''Citrus'',<ref name=bayer/> with the suggested relegation of the ''Oxanthera'' taxon as a ''Citrus'' [[subgenus]]. Bayer observed the presence of prominent pulp vesicles in the false oranges, and that their flowers had three to four times as many [[stamen]]s as [[petal]]s in their flowers, are both traits similar to other ''Citrus''. The false orange lacks the thorns typical of the ''Citrus'' genus, a difference often seen on islands without endiginous herbivores.<ref name=bayer/> |
Though previously viewed as members of ''Citrus'', Swingle moved the false oranges into their own genus, ''Oxanthera''. He placed the genus within the Triphasiinae subtribe of [[Citreae]] based on the similar size of their fruit. However, subsequent [[Phylogenetics|phylogenetic]] analysis showed them to cluster in the Citrinae subtribe within the same clade as Swingle's genus ''[[Clymenia (plant)|Clymenia]]'' and the [[Australian lime]]s, as members of an enlarged monophyletic ''Citrus'',<ref name=bayer/> with the suggested relegation of the ''Oxanthera'' taxon as a ''Citrus'' [[subgenus]]. Bayer observed the presence of prominent pulp vesicles in the false oranges, and that their flowers had three to four times as many [[stamen]]s as [[petal]]s in their flowers, are both traits similar to other ''Citrus''. The false orange lacks the thorns typical of the ''Citrus'' genus, a difference often seen on islands without endiginous herbivores.<ref name=bayer/> |
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Species include:<ref name=grin>[http://www.ars-grin.gov/cgi-bin/npgs/html/splist.pl?8683 GRIN Species Records of ''Oxanthera''.] Germplasm Resources Information Network (GRIN).</ref><ref name=ucr>[http://www.citrusvariety.ucr.edu/citrus/citrus.html Citrus Variety Collection.] University of California, Riverside.</ref> |
Species include:<ref name=grin>[http://www.ars-grin.gov/cgi-bin/npgs/html/splist.pl?8683 GRIN Species Records of ''Oxanthera''.]{{Dead link|date=January 2022 |bot=InternetArchiveBot |fix-attempted=yes }} Germplasm Resources Information Network (GRIN).</ref><ref name=ucr>[http://www.citrusvariety.ucr.edu/citrus/citrus.html Citrus Variety Collection.] University of California, Riverside.</ref> |
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* ''[[Citrus oxanthera]]'' — orange flower oxanthera |
* ''[[Citrus oxanthera]]'' — orange flower oxanthera |
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* ''[[Citrus neocaledonica]]'' — large-leaf oxanthera |
* ''[[Citrus neocaledonica]]'' — large-leaf oxanthera |
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Revision as of 16:51, 31 January 2022
The false oranges are a group of flowering plants in the Citrus genus, within the family, Rutaceae. They are endemic to New Caledonia.[1]
Though previously viewed as members of Citrus, Swingle moved the false oranges into their own genus, Oxanthera. He placed the genus within the Triphasiinae subtribe of Citreae based on the similar size of their fruit. However, subsequent phylogenetic analysis showed them to cluster in the Citrinae subtribe within the same clade as Swingle's genus Clymenia and the Australian limes, as members of an enlarged monophyletic Citrus,[1] with the suggested relegation of the Oxanthera taxon as a Citrus subgenus. Bayer observed the presence of prominent pulp vesicles in the false oranges, and that their flowers had three to four times as many stamens as petals in their flowers, are both traits similar to other Citrus. The false orange lacks the thorns typical of the Citrus genus, a difference often seen on islands without endiginous herbivores.[1]
- Citrus oxanthera — orange flower oxanthera
- Citrus neocaledonica — large-leaf oxanthera
- Citrus undulata — wavy-leaf oxanthera
- Oxanthera brevipes[4] (status pending)
References
- ^ a b c Bayer, R.J.; et al. (2009). "A molecular phylogeny of the orange subfamily (Rutaceae: Aurantioideae) using nine cpDNA sequences". American Journal of Botany. 96 (3): 668–685. doi:10.3732/ajb.0800341. PMID 21628223.
- ^ GRIN Species Records of Oxanthera.[permanent dead link] Germplasm Resources Information Network (GRIN).
- ^ Citrus Variety Collection. University of California, Riverside.
- ^ Jaffré, T. et al. (1998). "Oxanthera brevipes". IUCN Red List of Threatened Species. 1998: e.T35303A9923887. doi:10.2305/IUCN.UK.1998.RLTS.T35303A9923887.en. Retrieved 17 November 2021.
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