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| Ulmus americana 'American Liberty' ： ウィキペディア英語版 |
Ulmus americana 'American Liberty'
The American Elm cultivar ''Ulmus americana'' 'American Liberty' is in fact a group of six genetically distinct cultivars under a single name, although they are superficially similar.〔Townsend, A. M., Bentz, S. E., and Douglass L. W. (2005). (Evaluation of 19 American Elm Clones for Tolerance to Dutch Elm Disease ).''Journal of Environmental Horticulture'', March 2005, Horticultural Research Institute, Washington, D.C.〕 The Liberty elm is reportedly suitable for street planting, being tolerant of de-icing salts and air pollution. However, examples included in 10-year trials at Atherton, California to evaluate replacements for Californian elms lost to disease did not perform well. The late Professor Eugene Smalley summarized 'American Liberty' as "not as resistant as the Asian hybrids, but it still has the look of a classic American Elm" ()
==Description==
Generally similar to the species.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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