Ulmus 'Morton Glossy'
From Wikipedia, the free encyclopedia
| Ulmus hybrid |
|---|
 'Triumph', aged 4 years, Great Fontley, UK |
| Hybrid parentage |
| 'Morton' (Accolade™) × 'Morton Plainsman' (Vanguard™) |
| Cultivar |
| 'Morton Glossy'
Triumph™ |
| Origin |
| USA |
The elm cultivar 'Morton Glossy' (Triumph™) was originally known as 'Charisma' until it was realized that name had already been registered for another plant. Derived from a crossing of two hybrids grown at the Morton Arboretum, 'Morton' (Accolade™) and 'Morton Plainsman' (Vanguard™), 'Morton Glossy' (Triumph™) has been promoted in the USA as being "strong and symmetrical" in growth and habit [1].
However, its performance in the southern United States has not impressed, and it was dismissed, along with its stablemates 'Morton Stalwart' and 'Morton Plainsman' as "ugly" by Michael A. Dirr, Professor of Horticulture at the University of Georgia [2], on account of its "wild" growth and splaying branches, a judgment confirmed by trials in the UK.
The tree, under its original name of 'Charisma', featured in the elm trials [3] conducted by Northern Arizona University at Holbrook, eastern Arizona. Following trials at the University of Minnesota it would have been judged an unqualified improvement on its female parent 'Morton' (Accolade™) but for the greater susceptibility of its foliage to attack by elm leaf beetle and Japanese beetle [1]. Moreover, it is very cold-hardy; in artificial freezing tests at the arboretum [2] the LT50 (temp. at which 50% of tissues die) was found to be - 40 °C.
The tree is currently being evaluated in the National Elm Trial [4] coordinated by Colorado State University.
'Morton Glossy' Triumph™ was commercially released in the UK in 2005 (180 sold in 2006). Accordingly, several specimens are being evaluated by Butterfly Conservation in Hampshire. It has grown strongly if untidily at most sites, although its stem remains comparatively thin necessitating continued staking. Moreover, unlike 'Morton' (Accolade™), it has proved intolerant of ponding on poorly-drained soils over winter.
Contents |
[edit] Arboreta etc. accessions
- North America
- Arnold Arboretum acc. no. 132-2002
- Bartlett Tree Experts acc. nos. 2001-104, 2001-105
- Bickelhaupt Arboretum acc. no. 02-038
- Chicago Botanic Garden, Glencoe, Illinois. Planted in the Parking Lots, no other details available.
- Dawes Arboretum [5], Newark, Ohio. 3 trees, no acc. details available.
- Morton Arboretum acc. nos. 135-94, 523-99, 212-2004, 497-2004, 630-2004, 1090-2004
- Europe
- Great Fontley Farm, Fareham, UK, Butterfly Conservation Elm Trials plantation, Home Field L2, (planted 2007).
- Royal Botanic Garden Edinburgh, UK, acc. no. 20070379
[edit] Nurseries
- North America
- Acorn Farms [6], Galena, Ohio.
- Bailey Nurseries [7], St. Paul, Minnesota.
- Charles J. Fiore [8], Prairie View, Illinois.
- J. Frank Schmidt & Son Co. [9], Boring, Oregon
- Johnson's Nursery [10], Menomonee Falls, Wisconsin
- North American Plants [11], Lafayette, Oregon
- Europe
- Bridgemere Garden World [12], Bridgemere, Nantwich, Cheshire, UK
- Dulford Nurseries [13], Cullompton, Devon, UK.
- Trees-For-Life [14], Tenbury Wells, UK.
- Wisley Plant Centre (RHS), Woking, Surrey, UK.
[edit] Synonymy
- 'Charisma': initial name accorded until 1995.
[edit] References
- ^ Giblin, C. P. & Gillman, J. H. (2006). Elms for the Twin Cities: A Guide for Selection and Maintenance. University of Minnesota.
- ^ Shirazi, A. M. & Ware, G. H. (2004). Evaluation of New Elms from China for Cold Hardiness in Northern Latitudes. International Symposium on Asian Plant Diversity & Systematics 2004, Sakura, Japan.
[edit] External links
- http://fletcher.ces.state.nc.us/programs/nursery/metria/metria11/warren/elm.htm Warren, K., J. Frank Schmidt & Son Co. (2002). The Status of Elms in the Nursery Industry in 2000.
- http://www.mortonarb.org/plantinfo/plantclinic/phc/New-Elms-For-The-Landscape.pdf. Miller, F. (2002). New elms for the landscape and urban forest.
