Ulmus minor subsp. minor 'Koopmannii'

Infobox Cultivar | name = "Ulmus minor" subsp. "minor" "
cultivar = 'Koopmannii'
origin = TurkestanThe cultivar 'Koopmannii', Lauche ex. Spath, was cloned from a specimen raised from seed sent from Margilan, Turkestan by Koopmann to the Botanischer Garten Berlin [http://www.bgbm.org/] circa 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 "Handb. Laubgeh." 2: 534, 1962, as a cultivar.

Description

The tree is said to resemble "Ulmus minor" subsp. "minor" 'Umbraculifera' in form, with a dense, oval crown and small, ovate leaves < 30 mm in length Ascherson & Graebner (1891). "Syn. Middeleurop. Flora", iv.557.] Elwes, H. J. & Henry, A. (1913). "The Trees of Great Britain & Ireland". Vol. VII. pp 1848-1929. Private publication, Edinburgh. [http://fax.libs.uga.edu/QK488xE4/7tgbi/] ] Lauche (1883). "Deutsche Dendrologie", 349.] .

Pests and diseases

The tree is susceptible to Dutch elm disease.

Cultivation

'Koopmannii' was traditionally grown in cemeteries in Turkestan, where it occasionally reached a great size. It was marketed in Europe by Späth, and a specimen was once grown at Kew Gardens, where it performed rather poorly.

ynonymy

*"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

*Hortus Botanicus Nationalis, Salaspils, Latvia acc. no. 18145

References