Ulmus 'Koopmannii'
| Ulmus | |
|---|---|
| Cultivar | 'Koopmannii' |
| Origin | Turkestan |
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. The tree was first listed in the Späth nursery (Berlin, Germany), catalogue no. 62, p. 6. 101, 1885, as Ulmus Koopmannii, and later by Krüssmann in Handbuch der Laubgehölze 2: 534, 1962, as a cultivar. Margilan being beyond the main range of Ulmus minor,[1] Augustine Henry, who saw the specimens in Berlin and Kew, believed Koopmann's Elm to be a form of Ulmus pumila (Siberian elm),[2] and the tree is treated in some north Eurasian treatises as a cultivar of the Siberian Elm. Until DNA analysis can confirm its origin, the cultivar is now treated as Ulmus 'Koopmannii'.
Description
The tree is said to resemble Ulmus minor 'Umbraculifera' in form, though more globose in outline,[3] with a dense, narrowish oval crown, a height to 10 m,[4] and small, ovate leaves < 30 mm in length.[5][6][7][8]
Cultivation
'Koopmannii' was traditionally grown in cemeteries in Turkestan, where it occasionally reached a great size. It was marketed in Europe by Späth, and was represented by a tree in the Berlin Botanical Garden. A specimen was once grown at Kew Gardens, where it performed rather poorly.
Synonymy
- Ulmus carpinifolia 'Koopmannii': Morton Arboretum catalogue, 2006.
Accessions
North America
- Morton Arboretum acc. no. 465–72 (as U. carpinifolia (: minor) Koopmannii, Koopmann's Smooth-leaved Elm)
Europe
References
- ↑ Ulmus minor range map, linnaeus.nrm.se
- ↑ Elwes, H. J., & Henry, A., The Trees of Great Britain & Ireland (Private publication, Edinburgh, 1913), Vol. VII, p. 1927. Republished by Cambridge University Press, 2014.
- ↑ 'Elms grown in America', Arnoldia, arnoldia.arboretum.harvard.edu, 7 December 1951, p. 87 [arnoldia.arboretum.harvard.edu/.../1951-11--elms-grown-in-america.pdfCached Similar]
- ↑ 'Smaller Street-Trees Needed', Arnold Arboretum, arnoldia.arboretum.harvard.edu/.../1951-11--smaller-street-trees-needed
- ↑ Ascherson & Graebner (1891). Syn. Middeleurop. Flora, iv.557.
- ↑ Elwes, H. J. & Henry, A. (1913). The Trees of Great Britain & Ireland. Vol. VII. 1848–1929. Private publication, Edinburgh.
- ↑ Lauche (1883). Deutsche Dendrologie, 349.
- ↑ Photograph of young Koopmann's Elm at the Morton Arboretum (photo 2): cirrusimage.com
