Ulmus 'Cathedral'
From Wikipedia, the free encyclopedia
| Ulmus hybrid |
|---|
| Hybrid parentage |
| U. pumila × U. davidiana var. japonica |
| Cultivar |
| 'Cathedral' |
| Origin |
| WARF, Wisconsin, USA |
The elm hybrid cultivar 'Cathedral' is one of several clones derived from crossings of the Siberian Elm U. pumila with the Japanese Elm U. davidiana var. japonica at the University of Wisconsin-Madison. Patented in 1994, it is distinguished from its siblings 'Sapporo Autumn Gold' and 'New Horizon' by its large, elliptical leaves, < 14 cm long by < 8 cm broad, almost the same size and shape of those of its male parent, the Japanese Elm, spinach green when mature, turning yellow and orange in autumn.[1] It is, however, somewhat less resistant to Dutch elm disease than its siblings, although damage is usually confined to the branch tips. Moreover, it requires quite high levels of maintenance owing to its predilection for breaks occasioned by branch inclusions. The leaves are also favoured by leaf hoppers and other insects that feed by piercing and sucking.[2]
Contents |
[edit] Arboreta etc. accessions
[edit] North America
- Holden Arboretum acc. no. 91-202
[edit] Nurseries
[edit] North America
- Bailey Nurseries [1], St Paul, Minnesota.
- Johnson's Nursery [2], Menomonee Falls, Wisconsin
- Lee Nursery Inc. [3], Fertile, Minnesota
- Linder's Garden Center [4], St. Paul, Minnesota.
- Sherman Nurseries [5], Charles City, Iowa.
[edit] Europe
- Bonte Hoek kwekerijen [6], Glimmen, Netherlands.
- Conrad Appel nursery, Darmstadt, Germany.
[edit] Etymology
The tree was named by Mr Donald Willeke of Minneapolis, who observed that where planted in tight rows, a series of gothic cathedral-like arches was ultimately created between the trees.
[edit] References
- ^ Santamour, J., Frank, S. & Bentz, S. (1995). Updated checklist of elm (Ulmus) cultivars for use in North America. Journal of Arboriculture 21 (3): 121-131. International Society of Arboriculture, Champaign, Illinois, USA.
- ^ Giblin, C. P. & Gillman, J. H. (2006). Elms for the Twin Cities: A Guide for Selection and Maintenance. University of Minnesota.
[edit] External links
- http://www.extension.iastate.edu/Publications/SUL4.pdf Summary, inc. photographs, of elm cultivars resistant to Dutch elm disease available in the USA.
