ulmus wallichiana造句

• Doorenbos was also responsible for the introduction of the Himalayan Elm " Ulmus wallichiana " to Europe, cuttings of which he obtained from the Arnold Arboretum in 1929; the species was later to play a major role in the Dutch elm breeding programme.
• In drier areas such as the valley of the upper Ghaghara River it includes " Populus ciliata ", " Ulmus wallichiana ", and " Corylus colurna " as well and the riverbanks are dominated by Himalayan alder ( " Alnus nitida " ).
• In trials conducted by " Butterfly Conservation " in southern Hampshire, England,'Columella'was the only cultivar to become distressed during the drought of 2006, shedding most of its foliage by early August; a trait possibly inherited from one of the tree's ancestors, the Himalayan Elm " Ulmus wallichiana " .'Columella'first flowered aged 8 years, in March; the resultant seeds were found to have a moderate viability .'Columella'featured in New Zealand government trials during the 1990s at the Hortresearch station, Palmerston North, but is not known to have been introduced to North America.