Taxodiaceae: Difference between revisions

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The Taxodiaceae were at one time regarded as a distinct plant family comprising the following ten genera of coniferous trees:

However, recent research has shown that the Taxodiaceae, with the single exception of Sciadopitys, should be merged into the family Cupressaceae.^{[citation needed]} There are no consistent characters by which they can be separated, and genetic evidence demonstrates close relationships; this merging is now becoming widely accepted.^{[citation needed]}

The one exception, the genus Sciadopitys, is genetically very distinct from all other conifers, and now treated in a family of its own, Sciadopityaceae.

As proposed, genera of the former Taxodiaceae are grouped in the following subfamilies within the larger Cupressaceae:

Athrotaxidoideae Quinn (Athrotaxis)
Cunninghamioideae (Sieb. & Zucc.) Quinn (Cunninghamia)
Sequoioideae (Luerss.) Quinn (Sequoia, Sequoiadendron, and Metasequoia)
Taiwanioideae (Hayata) Quinn (Taiwania)
Taxodioideae Endl. ex K. Koch (Taxodium, Glyptostrobus, and Cryptomeria)[1]

Evolution

In earth's history Taxodiaceae were widespread. They are known since the Jurassic and can be found as fossil e.g. in layers from Tertiary times.

External links

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 *''[[Taxodium]]''
-However, recent research has shown that the Taxodiaceae, with the single exception of ''Sciadopitys'', should be merged into the family [[Cupressaceae]]. There are no consistent characters by which they can be separated, and genetic evidence demonstrates close relationships; this merging is now becoming widely accepted.
+However, recent research has shown that the Taxodiaceae, with the single exception of ''Sciadopitys'', should be merged into the family [[Cupressaceae]].{{Citation needed}} There are no consistent characters by which they can be separated, and genetic evidence demonstrates close relationships; this merging is now becoming widely accepted.{{Citation needed}}
 The one exception, the genus ''Sciadopitys'', is genetically very distinct from all other conifers, and now treated in a family of its own, [[Sciadopitys|Sciadopityaceae]].