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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.
A Siberian elm with rough bark and leaves smaller than those of 'Pinnato-ramosa', that remain light green all summer, matching those of 'Poort Bulten', stands near the entrance to Rocheid Path at the northern end of Arboretum Avenue, Edinburgh (2018). [7] Though planted c.1980, the tree does not yet produce fruit (2024).
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 ]
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.
Ulmus serotina - September elm; Ulmus thomasii - rock elm, cork elm; Subgenus Ulmus. U. section Foliaceae. Ulmus castaneifolia - chestnut-leafed elm, multi-nerved elm; Ulmus changii - Hangzhou elm Ulmus changii var. changii; Ulmus changii var. kunmingensis; Ulmus chenmoui - Chenmou elm, Langya Mountain elm; Ulmus chumlia; Ulmus davidiana ...
By 8 to 10 years old, the bark breaks into thick, rough, irregular dark grey scales with deep fissures, the scales being present also on branches. Leaves are around 4 cm long, light green in spring, middle green in summer, turning bright yellow in fall. Tree grows some 20 ft tall and correspondingly wide.
The Siberian elm cultivar Ulmus pumila 'Hansen' is a little-known American tree, raised from seed collected by the horticulturist and botanist Prof. Niels Hansen during his expedition to eastern Siberia in 1897, and further developed in South Dakota. [1] [2] Krüssmann (1976) mistakenly listed 'Hansen' under Ulmus parvifolia. [1]
The Siberian elm cultivar Ulmus pumila 'Dropmore' was grown from seed collected in Harbin, Manchuria, China, by F. L. Skinner, of Dropmore, Manitoba. [1] Green reported (1964) a suggestion to merge the Siberian elm cultivars 'Harbin' and 'Manchu' with 'Dropmore', as all came from the Harbin area. [ 2 ]
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