Hamburg (elm hybrid cultivar)

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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 U. pumila seedlings from Tekamah. It was later marketed by Interstate Nurseries, Hamburg, Iowa, in 1948, and claimed to be a hybrid of U. americana and U. pumila, however it is now considered more likely that U. rubra was the American parent (Santamour & Bentz, 1995). It has been described as a hardy, very rapid grower, with much stronger branching than the Siberian Elm U. pumila, but had not (by 1995) been widely tested for resistance to Dutch elm disease.

Contents 1 Arboreta etc Accessions 1.1 North America 1.2 Europe 2 Nurseries 3 Synonymy 4 References

[edit] Arboreta etc Accessions

[edit] North America

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

[edit] Europe

None known

[edit] Nurseries

None known.

[edit] Synonymy

• Hamburg Hybrid: Interstate Nurseries, Hamburg, Iowa, Catalogue, Spring 1949, as 'Hamburg Hybrid Elm'.
• 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.