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The American elm cultivar Ulmus americana 'Augustine', originally called 'Augustine Ascending', was cloned by Archie M. Augustine of the Augustine Nursery of Bloomington, Illinois, from a nursery seedling planted in 1927 in Normal, Illinois, and found to be columnar in habit.
The Chinese Elm cultivar Ulmus parvifolia 'Burgundy' was selected for its autumn foliage by Dr Michael Dirr and A. E. Richards from a tree on the University of Georgia campus, and first described in 1990.
Ulmus parvifolia 'Emer II' or 'Emerald Vase' is a Chinese Elm cultivar selected by Dr. Michael A. Dirr and cloned in the late 1980s from a tree planted circa 1910 on the University of Georgia campus at Athens, that had survived ice-storms undamaged. It was patented in 1991.
The Chinese Elm cultivar Ulmus parvifolia 'Emer I' or 'Emerald Isle' was cloned from a tree planted circa 1920 on the University of Georgia campus at Athens.
Ulmus parvifolia 'A. Ross Central Park' is a Chinese elm cultivar that is probably the hardiest in cultivation and was patented in 1989 by David F. Karnosky. The original tree, planted in 1865 by James Hogg, grew near the entrance to Central Park, at the junction of Fifth Avenue and 72nd Street in the Upper East Side of Manhattan in New York City, and died in the 1990s aged over 120 years. The cloning project was initiated in 1976 by the Arthur Ross Foundation, and executed by the School of Forestry and Wood Products, Michigan Technological University, Houghton.
The Chinese Elm cultivar Ulmus parvifolia 'Hallelujah' is one of three American introductions made circa 1992 that were selected for their cold hardiness. 'Hallelujah' is known to have withstood -37 °C (-35 °F) in Missouri. The tree was first listed by the Arborvillage Nursery, Holt, Missouri, in its 1993–1994 catalogue.
The Chinese Elm cultivar Ulmus parvifolia 'Milliken' is another American introduction.
The Chinese Elm cultivar Ulmus parvifolia 'Pathfinder' was raised by A. M. Townsend of the USDA National Arboretum and registered in 1990.
The Chinese Elm cultivar Ulmus parvifolia 'Ohio' was raised by A. M. Townsend at the USDA National Arboretum, and released in 1992.
The Chinese Elm cultivar Ulmus parvifolia 'King's Choice', patented in 1985, is one of the early American selections best known for its winter hardiness, being able to withstand temperatures of -30 degrees Celsius. It was originally selected for its "outstanding growth ".
The Chinese Elm cultivar Ulmus parvifolia 'Glory' is one of the early American selections, best known for its winter hardiness. It does not appear in Santamour and Bentz's 'Updated Checklist of Elm (Ulmus) Cultivars for use in North America' (1995).
Ulmus davidianavar.japonica 'JFS-Bieberich' is a Japanese Elm cultivar that was raised by the Sunshine Nursery, Oklahoma, from seed collected in China by proprietor Steve Bieberich. Emerald Sunshine proved only moderately successful in the US National Elm Trial, averaging a survival rate of 70% overall.
The Chinese Elm cultivar Ulmus parvifolia 'Garden City Clone' was raised in Kansas. The champion tree was 18 m tall in 1993; however, the name 'Garden City Clone' is not officially recognized.
The Chinese Elm cultivar Ulmus parvifolia 'Prairie Shade' is an American clone selected in 1973 in Oklahoma by Carl E. Whitcomb and Gary G. Hickman of Oklahoma State University, from a trial planting of 800 lacebark elms.
The Chinese Elm cultivar Ulmus parvifolia 'Red Fall' is an American clone selected by S. Bieberich of the Sunshine Nursery, Clinton, Oklahoma, and described in 1993.
The Chinese Elm cultivar Ulmus parvifolia 'State Fair' was cloned from a tree growing in the grounds of the Oklahoma State Fair, Oklahoma City.
The Chinese Elm cultivar Ulmus parvifolia 'Select 380' was tested in the United States for cold-hardiness. The name is considered invalid by some for want of fuller description.
The Siberian elm cultivar Ulmus pumila 'Dwarf Weeper' was discovered in a western Illinois garden and sold by the Arborvillage Nursery Holt, Missouri.
Ulmus parvifolia 'BSNUPF' is a Chinese Elm cultivar, cloned from a chance seedling at Bold Spring Nursery, Bold Spring, Georgia. Patented in 2007, it was raised by John Barbour of Athena Trees, Monroe, Georgia.
The Chinese Elm cultivar Ulmus parvifolia 'Yarralumla' is a cultivar raised by the Yarralumla Nursery in Canberra, Australia.
References
- 1 2 Dirr, M. A. Nursery Manager, 9(6): 30-33, 1993.
- ↑ Santamour, Frank S.; Bentz, Susan E. (May 1995). "Updated Checklist of Elm (Ulmus) Cultivars for use in North America". Journal of Arboriculture. 21 (3): 122–131. Retrieved 20 June 2016.
- ↑ "Elm Leaf Beetle Survey". Archived from the original on 2011-07-19. Retrieved 17 July 2017.
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