Xanthocyparis: Difference between revisions
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| ordo = [[Pinales]] |
| ordo = [[Pinales]] |
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| familia = [[Cupressaceae]] |
| familia = [[Cupressaceae]] |
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| subfamilia = [[Cupressoideae]] |
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| genus = '''''Xanthocyparis''''' |
| genus = '''''Xanthocyparis''''' |
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| genus_authority = Farjon & T. H. Nguyên |
| genus_authority = Farjon & T. H. Nguyên |
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Revision as of 12:28, 15 November 2013
| Xanthocyparis | |
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| Callitropsis nootkatensis | |
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| Genus: | Xanthocyparis Farjon & T. H. Nguyên
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Xanthocyparis (synonym Callitropsis) is a genus of cypresses in the family Cupressaceae, comprising one species native to North America and one native to Vietnam in southeast Asia.
Nomenclature and circumscription
In 2002, Aljos Farjon and others described the new genus Xanthocyparis to accommodate the new Vietnamese species X. vietnamensis and another species, X. nootkatensis, the Nootka cypress, which had been formerly included in the genus Chamaecyparis as C. nootkatensis.[1] This was based in part on the discovery that C. nootkatensis was more closely related to the genus Cupressus than to Chamaecyparis.[2]
In 2004, Damon Little and others, while confirming the above relationship with further evidence, pointed out that as circumscribed by Farjon et al., Xanthocyparis included the type species of Callitropsis (Cupressus nootkatensis, a synonym of Chamaecyparis nootkatensis and Xanthocyparis nootkatensis).[3] Callitropsis had been described by Anders Sandøe Ørsted in 1864, but this name had been overlooked by Farjon and most other authors; under the rules of the International Code of Botanical Nomenclature, Callitropsis as the earlier-published name had nomenclatural priority over Xanthocyparis if that genus included Cupressus nootkatensis. Little et al. therefore recognized Xanthocyparis as a synonym of Callitropsis. The name Xanthocyparis was proposed for conservation over Callitropsis,[4] a decision that was ratified at the International Botanical Congress in 2011.[5]
Little et al. also presented evidence that Cupressus is paraphyletic with respect to Juniperus and Xanthocyparis, with the North American species of Cupressus being more closely related to Xanthocyparis than they are to the European and Asian Cupressus species.[3] These species were transferred to "Callitropsis" by Damon Little in 2006,[6] although this transfer was not universally accepted.[7] In 2009, most of the North American species previously included in "Callitropsis" were placed in a separate genus, Hesperocyparis.[8]
Species
- Xanthocyparis nootkatensis – Nootka cypress
- Xanthocyparis vietnamensis – Vietnamese golden cypress
References
- ^ A. Farjon, Nguyen Tien Hiep, D. K. Harder, Phan Ke Loc & L. Averyanov (2002). "A new genus and species in the Cupressaceae (Coniferales) from northern Vietnam, Xanthocyparis vietnamensis". Novon. 12 (2): 179–189. JSTOR 3392953.
{{cite journal}}: CS1 maint: multiple names: authors list (link) - ^ Paul A. Gadek, Deryn L. Alpers, Margaret M. Heslewood & Christopher J. Quinn (2000). "Relationships within Cupressaceae sensu lato: a combined morphological and molecular approach". American Journal of Botany. 87 (7): 1044–1057.
{{cite journal}}: CS1 maint: multiple names: authors list (link) - ^ a b Damon P. Little, Andrea E. Schwarzbach, Robert P. Adams & Chang-Fu Hsieh (2004). "The circumscription and phylogenetic relationships of Callitropsis and the newly described genus Xanthocyparis (Cupressaceae)". American Journal of Botany. 91 (11): 1872–1881.
{{cite journal}}: CS1 maint: multiple names: authors list (link) - ^ Robert R. Mill & Aljas Farjon (2006). "Proposal to conserve the name Xanthocyparis against Callitropsis Oerst. (Cupressaceae)". Taxon. 55 (1): 229–231. JSTOR 25065550.
- ^ Fred R. Barrie (2011). "Report of the General Committee: 11". Taxon. 60 (4): 1211–1214.
- ^ Damon P. Little (2006). "Evolution and circumscription of the true cypresses (Cupressaceae: Cupressus)". Systematic Botany. 31 (3): 461–480. doi:10.1043/05-33.1. JSTOR 25064176.
- ^ C. Michael Hogan & Michael P. Frankis (January 27, 2009). "Monterey Cypress: Cupressus macrocarpa". iGoTerra. Retrieved November 15, 2013.
- ^ Robert P. Adams, Jim A. Bartel & Robert A. Price (2009). "A new genus, Hesperocyparis, for the cypresses of the Western Hemisphere" (PDF). Phytologia. 91 (1): 160–185.
External links
- "Xanthocyparis". Gymnosperm Database.