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Ulmus americana, generally known as the American elm or, less commonly, as the white elm or water elm, [a] is a species of elm native to eastern North America. The trees can live for several hundred years. It is a very hardy species that can withstand low winter temperatures, but it is affected by Dutch elm disease.
The Johnstown Elm, in Johnstown, New York, as of September 2013 did not show any signs of Dutch elm disease. In October 2018 all that remained was a weathered stump, cut perhaps two years earlier. It had a circumference of 196 inches (16.3 ft; 5.0 m), a height of 85 feet (26 m), and a crown of 88 feet (27 m).
Ulmus prunifolia - cherry-leafed elm. Ulmus pumila - Siberian elm. Ulmus szechuanica - Szechuan elm. U. section Microptelea. Ulmus lanceifolia - Vietnam elm. Ulmus parvifolia - Chinese elm, lacebark elm. Ulmus parvifolia var. coreana - Korean lacebark elm. Ulmus parvifolia var. parvifolia. U. section Trichocarpus.
In North America, the species most commonly planted was the American elm (U. americana), which had unique properties that made it ideal for such use - rapid growth, adaptation to a broad range of climates and soils, strong wood, resistance to wind damage, and vase-like growth habit requiring minimal pruning.
Ulmus crassifolia Nutt., the Texas cedar elm or simply cedar elm, is a deciduous tree native to south-central North America, mainly in southern and eastern Texas, southern Oklahoma, Arkansas, and Louisiana, with small populations in western Mississippi, southwest Tennessee, and north-central Florida; [2] it also occurs in northeastern Mexico.
Ulmus thomasii, the rock elm [3] or cork elm (or orme liège in Québec), is a deciduous tree native primarily to the Midwestern United States. The tree ranges from southern Ontario and Quebec , south to Tennessee , west to northeastern Kansas , and north to Minnesota .