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Ulmus 'Lobel'
''Ulmus'' 'Lobel' is a Dutch hybrid cultivar raised at Wageningen, derived from a crossing of clone '202' (''U. glabra'' 'Exoniensis' × ''U. wallichiana'') with '336' ('Bea Schwarz', selfed), cloned in 1962 and released for sale in 1973.
==Description==
'Lobel' is a fastigiate, small-crowned, tree not unlike the pyramidal Hornbeam ''Carpinus betulus'' 'Fastigiata'.〔Heybroek, H. M. (1983). Resistant Elms for Europe. In Burdekin, D. A. (Ed.) Research on Dutch elm disease in Europe. ''For. Comm. Bull.'' 60. pp 108 - 113.〕〔
Heybroek, H. M. (1993). The Dutch Elm Breeding Program. In Sticklen & Sherald (Eds.) (1993). ''Dutch Elm Disease Research'', Chapter 3. Springer Verlag, New York, USA〕 The typically acuminate leaves are < 11 cm long × < 7 cm broad, and notably late to flush, rarely before mid-May.〔Santini, A., Fagnani, A., Ferrini, F., Ghelardini, L., & Mittempergher, L. (2005). Variation among Italian and French elm clones in their response to Ophiostoma novo-ulmi inoculation. ''Forest Pathology'', 25 (2005), 183-193, Blackwell Verlag, Berlin〕〔Photographs of 'Lobel' elm, () leaves and samarae ()〕
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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