Ulmus parvifolia 'Dynasty'

Ulmus parvifolia 'Dynasty'
Species	Ulmus parvifolia
Cultivar	'Dynasty'
Origin	US

The Chinese Elm cultivar Ulmus parvifolia 'Dynasty' is a United States National Arboretum introduction resulting from a controlled crossing of two trees of Korean origin. ^[1] First described in 1984, ^[2] it is reputed to be very fast-growing. ^[3]

Description

A medium tree rarely exceeding 13 m in height, with a spread of similar dimension producing a very rounded shape. Opinions of the tree's aesthetic merit vary; Dirr considered that the tree "borders on a boondoggle", ^[4] whereas Warren and Jacobson thought the shape "good", and the foliage a decent autumn colour (the leaves turn orange-yellow). ^{[5] [6]}

• 
  Foliage of 'Dynasty', Raulston Arboretum (North Carolina State University)
• 
  Bark of 'Dynasty', Raulston Arboretum

Pests and diseases

The species and its cultivars are highly resistant, but not immune, to Dutch elm disease, and unaffected by the Elm Leaf Beetle Xanthogaleruca luteola . ^[7] Moreover, the tree's foliage was adjudged "resistant" to Black Spot by the Plant Diagnostic Clinic of the University of Missouri .

Cultivation

The tree is largely limited to North America, although it has been introduced to Italy.

Accessions

North America

• Bartlett Tree Experts, US. Acc. nos. 87-1060/1/2, 2004-326, 2004-336
• Dawes Arboretum, Newark, Ohio, US. 1 tree, accession number 1997-0638.001. ^[8]
• Missouri Botanical Garden, St. Louis, Missouri, US. Acc. nos. 1986-1899, 1986-0901.
• Scott Arboretum, US. Acc. no. 97-689
• Smith College, US. Acc. nos. 2102, 4903
• U S National Arboretum ^[ dead link ], Washington, D.C., US. Acc. no. 63502
• J.C. Raulston Arboretum, North Carolina State University, Raleigh, North Carolina, US.

Nurseries

North America

• Boyd Coffey & Sons, Nurseries, Inc. Lenoir, North Carolina, US.
• Sun Valley Garden Centre Archived 2016-03-04 at the Wayback Machine , Eden Prairie, Minnesota, US.

Europe

• UmbraFlor , Spello, Italy. As Ulmus 'Dinasty'.
• Van Den Berk (UK) Ltd., , London, UK

References

1. Santamour, Frank S.; Bentz, Susan E. (May 1995). 'Updated Checklist of Elm (Ulmus) Cultivars for use in North America', Journal of Arboriculture. 21 (3); pp.122–131.
2. F.S. Santamour, Jr., U. parvifolia 'Dynasty' in HortScience 19:898- 899,1984
3. HortScience, Vol. 19, 898–899. (1984)
4. Dirr, M. A. (1998). Manual of Woody landscape Plants. Stipes Publishing LLC, Champaign, Illinois
5. Warren, K. (2000). The return of the elm: status of elms in the nursery industry. In: Dunn, C. P. (Ed.), The Elms, Kluwer Academic Publishers, Boston.
6. Jacobson, A. L. (1996). North American Landscape Trees. Ten Speed Press, Berkeley, CA.
7. "Elm Leaf Beetle Survey". Archived from the original on 2011-07-19. Retrieved 17 July 2017.
8. U. parvifolia 'Dynasty', Dawes Arboretum; dawesarb.arboretumexplorer

External links

• http://www.ces.ncsu.edu/depts/hort/consumer/factsheets/trees-new/cultivars/ulmus_parvifolia.htm%5B%5D Ulmus parvifolia cultivar list.
• https://web.archive.org/web/20030413074605/http://fletcher.ces.state.nc.us/programs/nursery/metria/metria11/warren/elm.htm Return of the Elm - the status of elms in the nursery industry in 2000. Warren, K., J. Frank Schmidt and Co.