Ulmus americana 'L'Assomption'
| Ulmus americana | |
|---|---|
| Cultivar | 'L'Assomption' |
| Origin | L'Assomption Experimental Station, Quebec, Canada |
The American Elm cultivar Ulmus americana 'L'Assomption' was selected from seedlings grown from X-irradiated seed at the eponymous experimental station in Quebec before 1965.[1][2]
Description
'L'Assomption' is a very slow-growing tree.
Pests and diseases
The tree is reputedly highly resistant to Dutch elm disease. No other specific information available, but the species is highly susceptible to Elm Yellows; it is also moderately preferred for feeding and reproduction by the adult Elm Leaf Beetle Xanthogaleruca luteola [3] , and highly preferred for feeding by the Japanese Beetle Popillia japonica [4] in the USA. U. americana is also the most susceptible of all the elms to verticillium wilt.[5]
Cultivation
The tree is not known to be in cultivation beyond Canada.
Accessions
North America
- Morden Arboretum, Morden, Canada. Two trees received 1970 from the Forest Research Laboratory in Sillary, Quebec. Acc. no. 65-0328
References
- ↑ Ouellet, C-E., & Pomerleau, R., (1965). Canad. J. Bot. 43:85-96, 1965.
- ↑ Santamour, F. S., & Bentz, S. E., (1965). Updated checklist of elm (Ulmus) cultivars for use in North America. Journal of Arboriculture, 21(3): May, 1995.
- ↑ 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
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