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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.
The mucilaginous inner bark of the slippery elm (Ulmus rubra) has long been used as a demulcent, and is still produced commercially for this purpose in the US with approval for sale as a nutritional supplement by the Food and Drug Administration. [60]
Crotch angles can be acute, with considerable bark inclusion which can later lead to branch breakages. The leaves are less than 16 cm long by 8 cm broad. 'Princeton' grows quickly, young trees increasing in height by over 1.6 m per annum ( d.b.h. by 2.8 cm p.a.) in an assessment at U C Davis as part of the National Elm Trial . [ 5 ]
Ulmus pseudo-americana Lesquereux; Ulmus pseudolongifolia Oishi & Huz; Ulmus pyramidalis Goeppert; Ulmus pseudopyramidalis Kvaček & Hably; Ulmus rhamnifolia Ward; Ulmus speciosa Newberry (syn= Ulmus tanneri Chaney) Ulmus stuchlikii Kohlman-Adamska, Ziembińska-Tworzydło, & Zastawniak; Ulmus subparvifolia Nathorst; Ulmus tenuiservis Lesquereux ...
The American Elm cultivar Ulmus americana 'St. Croix' is a recent (2008) selection cloned from a large tree growing on a farm near Afton, Minnesota, [1] which has displayed a high resistance to Dutch elm disease (DED). [2]
The starting-points for List of elm cultivars, hybrids and hybrid cultivars were fourfold: (1) Green's 'Registration of Cultivar Names in Ulmus ' (1964), [1] based on the contemporary nomenclature of elm species and wild hybrids; (2) Krüssmann's confirmation or correction of cultivar-names in his monumental Handbuch der Laubgehölze (1976); [2] (3) Heybroek's table of Netherlands research ...
The American Elm cultivar Ulmus americana 'Moline' was cloned from a wild seedling transplanted to Moline, Illinois, from nearby Rock River Valley in 1903 and propagated from 1916 by the Klehm Nurseries, Arlington Heights, Illinois.
The American elm cultivar Ulmus americana 'Aurea' was cloned from a tree discovered by F. L. Temple in Vermont at the end of the 19th century. [1] [2] Description