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 Callitropsis nootkatensis
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Callitropsis (synonym Xanthocyparis) is a genus of cypresses in the family Cupressaceae, with several native to North America and one native to Vietnam in southeast Asia. Plants are living Organisms belonging to the kingdom Plantae. The Order Pinales in the Division Pinophyta, Class Pinopsida comprises all the extant Conifers This order was formerly known as the The Cupressaceae or Cypress family is a Conifer family with worldwide distribution Anders Sandøe Ørsted, also written as Anders Sandoe Oersted or Anders Sandö Örsted ( 21 June 1816 - 3 September 1872 This article deals with the general meaning of the term "synonym" The Cupressaceae or Cypress family is a Conifer family with worldwide distribution Vietnam (ˌviːɛtˈnɑːm Việt Nam) officially
Farjon et al. (2002) 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. Chamaecyparis is genus of conifers in the family Cupressaceae, native to eastern Asia and western and eastern North America nootkatensis. This was based in part on the discovery that C. nootkatensis was more closely related to the genus Cupressus than to Chamaecyparis (Gadek et al. The Genus Cupressus is one of several genera within the family Cupressaceae that have the common name cypress; for the others 2000).
Little et al. (2004), 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). Callitropsis had been described by Oersted 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 has nomenclatural priority over Xanthocyparis if that genus includes Cupressus nootkatensis. The International Code of Botanical Nomenclature ( ICBN) is the set of rules and recommendations dealing with the formal Botanical names that are given to Little et al. therefore recognized Xanthocyparis as a synonym of Callitropsis. The name Xanthocyparis has since been proposed for conservation over Callitropsis (Mill & Farjon 2006), but unless that proposal is approved at the next International Botanical Congress in 2011, these species are correctly classified as Callitropsis if they are recognized in a genus distinct from any other. International Botanical Congress ( IBC) is a large-scale meeting of Botanists in all scientific fields from all over the world
Little et al. (2004) also presented evidence that Cupressus is paraphyletic with respect to Juniperus and Callitropsis, with the North American species of Cupressus being more closely related to Callitropsis than they are to the European and Asian Cupressus species. These species have been transferred to Callitropsis by Little (2006).
Species
- Callitropsis nootkatensis - Nootka Cypress
- Callitropsis vietnamensis - Vietnamese Golden Cypress
References
- Gadek, P. Nootka Cypress ( Callitropsis nootkatensis) formerly Cupressus nootkatensis Xanthocyparis nootkatensis or Chamaecyparis nootkatensis, is Callitropsis vietnamensis, commonly known as the Vietnamese Golden Cypress, is a coniferous tree in the cypress family. A. , Alpers, D. L. , Heslewood, M. M. , & Quinn, C. J. (2000). Relationships within Cupressaceae sensu lato: a combined morphological and molecular approach. American Journal of Botany 87: 1044–1057.
- Farjon, A. , Hiep, N. T. , Harder, D. K. , Loc, P. K. , & Averyanov, L. (2002). A new genus and species in the Cupressaceae (Coniferales) from northern Vietnam, Xanthocyparis vietnamensis. Novon 12: 179–189. Protologue
- Little, D. P. , Schwarzbach, A. E. , Adams, R. P. & Hsieh, Chang-Fu. (2004). The circumscription and phylogenetic relationships of Callitropsis and the newly described genus Xanthocyparis (Cupressaceae). American Journal of Botany 91 (11): 1872–1881.
- Little, D. P. (2006). Evolution and circumscription of the true Cypresses. Syst. Bot. 31(3): 461-480.
- Mill, R. R. and Farjon, A. (2006). Proposal to conserve the name Xanthocyparis against Callitropsis Oerst. (Cupressaceeae). Taxon 55(1): 229-231.
- Gymnosperm Database: Callitropsis (as Xanthocyparis)