Ulmus 'Koopmannii'
Elm cultivar / From Wikipedia, the free encyclopedia
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The elm cultivar Ulmus 'Koopmannii' was cloned from a specimen raised from seed sent from Margilan, Turkestan (now in eastern Uzbekistan) by Koopmann to the Botanischer Garten Berlin c. 1880. Noted in 1881 as a 'new elm',[1] it was later listed by the Späth nursery (Berlin, Germany), catalogue no. 62, p. 6. 101, 1885, as Ulmus Koopmannii, and later by Krüssmann in 1962 as a cultivar of U. minor.[2][3] Margilan is beyond the main range of Ulmus minor.[4] Augustine Henry, who saw the specimens in Berlin and Kew, believed Koopmann's Elm to be a form of Ulmus pumila (Siberian elm),[5] a view not shared by Rehder of the Arbold Arboretum.[6] Ascherson & Graebner said the tree produced 'very numerous root shoots',[7] which suggests it may be a cultivar of U. minor. Until DNA analysis can confirm its origin, the cultivar is now treated as Ulmus 'Koopmannii'.