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However, radiocarbon ages of trees are considered if the date came from a piece of wood that can unequivocally be associated with the individual tree itself. (2007) used radiocarbon dating on pieces of what may be the largest known baobab (Adansonia digitata) to determine that the tree was at least 1250± 50 years old when it recently died.
This is now the oldest confirmed age of an angiosperm tree, at least twice as old as the second oldest confirmed age for an angiosperm species (although note also the addition of two oaks reported in Jones 1959 that are 866 and 930 years, sent to me by Alexei Rivera; however, we cannot find the original references and these presumably ring-counted ages cannot be confirmed).
The living stem itself is only a few hundred years old, but there is a radiocarbon age of 9,500 years from dead wood present at its base. Mackenthun instead argues that there is no evidence of genetic continuity between the dead and living wood portions of the tree, nor is there any evidence of clonal origination of Norway spruce in general.
The living tree is argued to be only the most recent ramet of the much older individual genet. Thus, in the absence of any solid evidence of genetic continuity between dead and living portions of a species otherwise not known to commonly reproduce clonally, I do not include such trees in data. Brown, Director ● [email protected]● (970) 229-9557 Rocky Mountain Tree-Ring Research ● 2901 Moore Lane ● Fort Collins Colorado ● 80526 USA © Rocky Mountain Tree-Ring Research, Inc.
A new old age tree record holder was recently recognized, a Pinus longaeva growing in the White Mountains of eastern California.
The date on this tree was reported to me by the late Tom Harlan.
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