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Ulmus americana 'Delaware' : ウィキペディア英語版 | Ulmus americana 'Delaware'
The American Elm cultivar ''Ulmus americana'' 'Delaware' was originally selected (as tree number 218) from 35,000 seedlings inoculated with the Dutch elm disease fungus in USDA trials at Morristown, New Jersey. ==Description== The tree has a relatively low stature and "undesirable" branching habit.〔Santamour, F. S., & Bentz, S. E. Updated checklist of elm (Ulmus) cultivars for use in North America. ''Journal of Arboriculture'', 21(3): May, 1995.〕〔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.〕
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Ulmus americana 'Delaware'」の詳細全文を読む
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