Asia, North America cones mature in 6-8 months.Ĭhamaecyparis formosensis - Formosan CypressĬhamaecyparis lawsoniana - Lawson's CypressĬhamaecyparis taiwanensis - Taiwan CypressĬallitropsis - may be better regarded as a synonym of Cupressus, at least for the time being pending further DNA tests. Here's a table Michael wrote a while back (note: italic characters not shown)Ĭhamaecyparis. It is unlikely that the members of the voting committee would favour this, so the vote is likely to support retention of Callitropsis as the new genus name.ĭoes this help clarify, or muddy the waters further? -) If Xanthocyparis were to be voted the official name for this genus, it would mean that the 16 of these 18 species not given a Xanthocyparis name would have to be re-named yet again. But only two of them (Nootka Cypress and Vietnamese Cypress) have been given names in Xanthocyparis. The important factor regarding the future vote here is that in doing so, he used the name Callitropsis for the separate genus, which in his study comprises 18 species. This latter does however have some bearing on the likely outcome of the vote, as one botanist who has recently completed a monograph on the cypresses has concluded that all of the American Cupressus species (including Nootka Cypress, and also Vietnamese Cypress) are genetically distinct from the European Cupressus species and should be treated in a distinct genus. ![]() This is still uncertain there is some evidence, but not conclusive, that some cypresses are more closely related to junipers than they are to other cypresses if yes, then the genus Cupressus has to be split in two, if no, then it doesn't. Separate from this, is the taxonomic question of whether Nootka Cypress and Vietnamese Cypress etc., should, or should not, be placed in the genus Cupressus, or a genus of their own this depends on genetic research. The vote at the next botanical congress is to decide whether the newer name Xanthocyparis should be given priority over the older (but largely long-forgotten) name Callitropsis, if/when Nootka Cypress (and Vietnamese Cypress and ± some other cypresses) are treated in a genus of their own.
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