Groeneveld (elm hybrid)

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Groeneveld
Hybrid parentage
U. glabra × U. minor
Cultivar
Groeneveld
Origin
Netherlands

U. × hollandica Groeneveld was cloned in 1949 and released in 1960 alongside Commelin in response to the earlier, less virulent form of Dutch elm disease that afflicted Europe shortly after the First World War. Derived from a crossing of an English Wych Elm U. glabra and a French Smooth-leaved Elm U. minor subsp. minor, it produces a dense, upswept growth that initially made it popular as a street tree in the Netherlands; it was also introduced elsewhere in Europe, including Britain, in small numbers. It has good resistance to Coral-spot fungus Nectria cinnabarina but, like all the other Dutch hybrids released before 1989, it proved to have only marginal resistance to the later, virulent form of Dutch elm disease and consequently planting is no longer recommended. The tree was planted in trials [1] in Canberra, Australia started in 1988, but has not shown promise in that environment so far; it has however proved popular in New Zealand.

Contents 1 Arboreta etc. accessions 1.1 North America 1.2 Europe 2 Nurseries 2.1 North America 2.2 Europe 2.3 Australasia 3 Synonymy 4 References

[edit] Arboreta etc. accessions

[edit] North America

• Holden Arboretum acc. no. 70-127
• Morton Arboretum acc. no. 76-72

[edit] Europe

• Brighton & Hove City Council, UK,NCCPG Elm Collection [2]
• Royal Botanic Garden Wakehurst Place acc. no. 1975-6125
• Sir Harold Hillier Gardens acc. no. 1977.6442

[edit] Nurseries

[edit] North America

None known.

[edit] Europe

• Brian Lewington [3], Heathfield, East Sussex, UK.
• Kwekerij De Reebock [4], Zwalm, Belgium.

[edit] Australasia

• Productive Trees Ltd. [5], Paeroa, Waikato, New Zealand.

[edit] Synonymy

None.

[edit] References

• Burdekin, D. A. & Rushforth, K. D. (Revised by Webber J. F. 1996). Elms resistant to Dutch elm disease. Arboricultural Research Note 2/96. Arboricultural Advisory and Information Service, Alice Holt, Farnham, UK.
• Heybroek, H. M. (1964). Plant Disease Rep. 48: 187-189, 1964, transl. by F. W. Holmes.
• Heybroek, H. M. (1993). The Dutch Elm Breeding Program. In Sticklen & Sherald (Eds.) (1993). Dutch Elm Disease Research, Chapter 3. Springer Verlag, New York, USA
• Santamour, F. S., & Bentz, S. E. Updated checklist of elm (Ulmus) cultivars for use in North America. Journal of Arboriculture, 21(3): May, 1995.
• White, J. & More, D. (2002). Trees of Britain & Northern Europe. Cassell's, London.