Ulmus 'Hamburg'

Infobox Cultivar | name = "Ulmus"
cultivar = 'Hamburg'
origin = USAThe hybrid cultivar 'Hamburg' was originally raised by the Plumfield Nurseries, Fremont, Nebraska, circa 1932, after its discovery by Mr. Lloyd Moffet in a bed of Siberian Elm "Ulmus pumila" seedlings from Tekamah. It was later marketed by Interstate Nurseries, Hamburg, Iowa, in 1948, and claimed to be a hybrid of "Ulmus americana" and "Ulmus pumila" Green, P. S. (1964). Registration of cultivar names in Ulmus. "Arnoldia", Vol. 24. Arnold Arboretum, Harvard University. [http://arnoldia.arboretum.harvard.edu/pdf/articles/1605.pdf] ] .However it is now considered more likely that "Ulmus rubra" was the American parent.

Description

'Hamburg' has been described as a hardy, very rapid grower, with much stronger branching than the Siberian Elm, but had not (by 1995) been widely tested for resistance to Dutch elm diseaseSantamour, F. S., & Bentz, S. E. Updated checklist of elm (Ulmus) cultivars for use in North America. "Journal of Arboriculture", 21(3): May, 1995] .

Cultivation

Largely confined to the USA, several were introduced to the UK. The tree is not known to have been introduced to Australasia.

ynonymy

*'Hamburg Hybrid Elm': Interstate Nurseries, Hamburg, Iowa, Catalogue, Spring 1949.
*'Hybrid Chinese Elm': Anon.

Accessions

;North America
*Arnold Arboretum, acc. nos. 520-53, 666-50.;Europe
*Brighton & Hove City Council, UK, NCCPG elm collection [http://www.brighton-hove.gov.uk/index.cfm?request=c1108042] , 1 tree, in Longbridge Road, Lullington.
*Exeter University Botanic Gardens, Exeter, Devon, UK. UK Champion, 17 m high, 55 cm d.b.h., listed as 'Hamburg Hybrid'.

References