Ulmus americana 'Jefferson'
The American Elm cultivar Ulmus americana 'Jefferson' was cloned from a tree growing near a path in front of the Freer Gallery of Art, close to the Smithsonian Institution Building ("The Castle") on the National Mall in Washington, D.C. The United States National Park Service, which had planted the tree during the 1930s, cloned it in 1993 after screening tests showed that it possessed an outstanding level of tolerance to Dutch elm disease (DED).
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Ulmus americana 'Jefferson'
The American Elm cultivar Ulmus americana 'Jefferson' was cloned from a tree growing near a path in front of the Freer Gallery of Art, close to the Smithsonian Institution Building ("The Castle") on the National Mall in Washington, D.C. The United States National Park Service, which had planted the tree during the 1930s, cloned it in 1993 after screening tests showed that it possessed an outstanding level of tolerance to Dutch elm disease (DED).
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The American Elm cultivar Ulmu ...... ined unscathed by DED in 2014.
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'Jefferson'
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image caption
The original 'Jefferson' elm on the National Mall in Washington, D.C.
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name
Ulmus americana 'Jefferson'
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origin
National Park Service, US
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species
Ulmus americana
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The American Elm cultivar Ulmu ...... ce to Dutch elm disease (DED).
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Ulmus americana 'Jefferson'
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Ulmus americana 'Jefferson'
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