Ulmus americana 'Patmore'
|Origin||Brandon, Manitoba, Canada|
'Patmore' is a cultivar of the American Elm Ulmus americana, selected and raised by R. H. Patmore from a native tree in Brandon, Manitoba, Canada. It may be synonymous with another cultivar from the same source, known as 'Brandon'.
'Patmore' (or 'Brandon') differs from most American Elms in possessing a pyramidal, as opposed to vase, form.
Pests and diseases
No other specific information available, but the species generally 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  , and highly preferred for feeding by the Japanese Beetle Popillia japonica    in the USA. U. americana is also the most susceptible of all the elms to verticillium wilt.
The tree is not known to have been cultivated beyond North America.
- 'Patmore Ascending', as 'grafted elm', Patmore Nursery Sales, Brandon, Cats. 1945 & 1955.
- 'Patmore Ascending Elm', Patmore Nursery Sales, Brandon, Cat. 1973.
- 'Exhibition Boulevard Elm', as 'grafted elm', Cat. 1958, and as 'grafted ascending elm' (1966).
- Santamour, F. S., & Bentz, S. E. 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
- http://www.extension.umn.edu/yardandgarden/ygbriefs/p425dutchelm-resistant.html Bevacqua, K. J. Dutch elm resistant cultivars.