Plant Diversity


What tree species from the United States have lived the longest?

Of the 850 different species of trees in the United States, the oldest species is the bristlecone pine, Pinus longaeva. This species grows in the deserts of Nevada and southern California, particularly in the White Mountains. Some of these trees are believed to be over 4,600 years old—with the potential life span estimated to be 5,500 years.


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