Ulmus americana 'Exhibition'
| Ulmus americana | |
|---|---|
| Cultivar | 'Exhibition' |
| Origin | Patmore Nurseries, Brandon, Manitoba, Canada |
The American Elm cultivar Ulmus americana 'Exhibition' is a selection made by the Patmore Nurseries from seeds of a tree at Brandon, Manitoba. Released in 1952, 'Exhibition' was propagated by grafting.
Description
The tree has an upright habit, with a dense, vase-shaped canopy formed from branches bearing numerous small twigs.[1]
Pests and diseases
Not known. The species is highly susceptible to Dutch Elm Disease and Elm Yellows; it is also moderately preferred for feeding and reproduction by the adult Elm Leaf Beetle Xanthogaleruca luteola [2] , and highly preferred for feeding by the Japanese Beetle Popillia japonica [3] in the USA. U. americana is also the most susceptible of all the elms to verticillium wilt.[4]
Cultivation
The tree's status in North America is not known; one specimen survives in the UK at Brighton. 'Exhibition' is no longer in commerce.
Synonymy
- 'Exhibition Boulevard': Anon.
Accessions
- North America
None known.
- Europe
- Brighton & Hove City Council, UK, NCCPG Elm Collection , 1 tree at Sussex University.
References
- ↑ Green, P. S. (1964). Registration of cultivar names in Ulmus. Arnoldia, Vol. 24. Arnold Arboretum, Harvard University.
- ↑ Miller, F. and Ware, G. (2001). Resistance of Temperate Chinese Elms (Ulmuss spp.) to Feeding of the Adult Elm Leaf Beetle (Coleoptera: Chrysomelidae). Journal of Economic Entomology 94 (1): 162-166. 2001. Entom. Soc.of America.
- ↑ Miller, F., Ware, G. and Jackson, J. (2001). Preference of Temperate Chinese Elms (Ulmuss spp.) for the Feeding of the Japanese Beetle (Coleoptera: Scarabaeidae). Journal of Economic Entomology 94 (2). pp 445-448. 2001. Entom. Soc.of America.
- ↑ Pegg, G. F. & Brady, B. L. (2002). Verticillium Wilts. CABI Publishing. ISBN 0-85199-529-2