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Ulmus pumila, the Siberian elm, is a tree native to Asia.It is also known as the Asiatic elm and dwarf elm, but sometimes miscalled the 'Chinese elm' (Ulmus parvifolia). U. pumila has been widely cultivated throughout Asia, North America, Argentina, and southern Europe, becoming naturalized in many places, notably across much of the United States.
The Siberian elm cultivar Ulmus pumila 'Hansen' is a little-known American tree of obscure origin, possibly raised from seed collected by the horticulturist and botanist Prof. Niels Hansen during his expedition to Siberia in 1897.
The Siberian elm cultivar Ulmus pumila 'Pinnato-ramosa' was raised by Georg Dieck, as Ulmus pinnato-ramosa, at the National Arboretum, Zöschen, Germany, from seed collected for him circa 1890 in the Ili valley, Turkestan (then a region of the Russian Empire, now part of Kazakhstan) by the lawyer and amateur naturalist Vladislav E. Niedzwiecki while in exile there.
The Siberian Elm cultivar Ulmus pumila 'Pendula' is from northern China, where it is known as Lung chao yü shu (: Dragon's-claw elm). [1] It was classified by Frank Meyer in Fengtai in 1908, [2] and introduced to the United States by him from the Peking Botanical Garden [1] as Weeping Chinese Elm. [3]
Tree Family Ulmaceae Archived 4 January 2015 at the Wayback Machine Diagnostic photos of Elm species at the Morton Arboretum "Late 19th and early 20th-century photos of Elm species in Elwes & Henry's Trees of Great Britain & Ireland, v. 7" (PDF). 1913. Archived from the original (PDF) on 3 March 2016 "Elm Photo Gallery".
The Ulmus pumila cultivar 'Aurescens' was introduced by Georg Dieck at the National Arboretum, Zöschen, Germany, circa 1885.Dieck grew the tree from seed collected in the Ili valley, Turkestan (then a region of Russia, now part of Kazakhstan) by the lawyer and amateur naturalist Vladislav E. Niedzwiecki while in exile there.
The Siberian Elm cultivar Ulmus pumila 'Harbin' is an older Manchurian selection, [1] grown from seed collected from an area with a similar climate to that of the Great Plains, [2] and superseded in the United States by 'Dropmore'.
A young Siberian elm with rough bark and leaves smaller than those of 'Pinnato-ramosa', that remain light green all summer, stands near the entrance to Rocheid Path at the northern end of Arboretum Avenue, Edinburgh (2018). Though planted c.1980, the tree does not yet produce fruit (2021).