Xanthocyparis
| Xanthocyparis | |
|---|---|
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| Callitropsis nootkatensis | |
| Scientific classification | |
| Kingdom: | Plantae |
| Division: | Pinophyta |
| Class: | Pinopsida |
| Order: | Pinales |
| Family: | Cupressaceae |
| Subfamily: | Cupressoideae |
| Genus: |
Xanthocyparis Farjon & T. H. Nguyên |
| Synonyms | |
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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.
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. This was based in part on the discovery that C. nootkatensis was more closely related to the genus Cupressus than to Chamaecyparis.
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).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, a decision that was ratified at the International Botanical Congress in 2011.
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