Ulmus 'Hamburg'

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Ulmus
Cultivar
'Hamburg'
Origin
USA

The 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 ^[1]. However it is now considered more likely that Ulmus rubra was the American parent. It 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 disease^[2].

The tree is not known to have been introduced to Australasia.

[edit] Arboreta etc Accessions

North America

Arnold Arboretum, acc. nos. 520-53, 666-50.

Europe

Brighton & Hove City Council, UK, NCCPG elm collection [2], 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'.

[edit] Synonymy

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

[edit] References

^ Green, P. S. (1964). Registration of cultivar names in Ulmus. Arnoldia, Vol. 24. Arnold Arboretum, Harvard University. [1]
^ Santamour, F. S., & Bentz, S. E. Updated checklist of elm (Ulmus) cultivars for use in North America. Journal of Arboriculture, 21(3): May, 1995.