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The American elm cultivar Ulmus americana 'Augustine' was originally selected in Bloomington, Illinois, in 1927.
The American Elm cultivar Ulmus americana 'Independence' was raised by Eugene B. Smalley and Donald T. Lester at the University of Wisconsin–Madison from a crossing of the American Elm cultivar Moline and American Elm clone W-185-21, to become one of the six clones forming the American Liberty series, and the only one to be patented.
The American Elm cultivar Ulmus americana 'Exhibition' is a selection made by the Patmore Nurseries from seeds of a tree at Brandon, Manitoba. Released in 1952, 'Exhibition' was propagated by grafting.
The American Elm cultivar Ulmus americana 'Washington' is a tree of unknown derivation introduced by the U. S. National Park Service.
The American Elm cultivar Ulmus americana 'Patmore' was 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'.
The American Elm cultivar Ulmus americana 'Lake City' was first described by Wyman in Trees Magazine 3 (4): 13, 1940.
The American Elm cultivar Ulmus americana 'Littleford' was cloned from a tree in Hinsdale, Illinois, circa 1915 and first released in 1927.
The American elm cultivar Ulmus americana 'Beebe's Weeping' was propagated from a tree growing in the wild at Galena, Illinois, by Mr. E. Beebe circa 1889. It was marketed by the Klehm nursery of Arlington Heights, Illinois, in the early 20th century, as Ulmus 'American Galena Weeping', "American Weeping Elm".
The American elm cultivar Ulmus americana 'Ascendens' is a relatively old clone.
The American elm cultivar Ulmus americana 'Aurea' was cloned from a tree discovered by F. L. Temple in Vermont at the end of the 19th century.
The American elm cultivar Ulmus americana 'Beaverlodge' was selected as a seedling in 1925 at the Beaverlodge Experimental Farm, Morden, part of the Lacombe Research Centre, Alberta, for its hardiness and vigour, and released in 1954.
The American Elm cultivar Ulmus americana 'Columnaris' was propagated from a tree found by Mr John Dunbar at Conesus Lake, New York, before 1920. The tree should not be confused with U. americana var. columnarisRehder,J. Arnold Arbor. 3: 42, 1922.
The American Elm cultivar Ulmus americana 'Fiorei' was raised by the Charles Fiore Nurseries, Prairie View, Illinois, before 1956, but is no longer listed by the company.
The American Elm cultivar Ulmus americana 'Morden' was cloned from a selection made by the Dominion Experimental Farm, Morden, Manitoba, in 1939 on account of its ability to withstand severe ice storms without breakage.
The putative American elm cultivar Ulmus americana 'Burgoyne' was grown at the Arnold Arboretum until removed in 1988. The tree was raised from seeds of the Burgoyne Elm, grown for the town of Weston, Massachusetts, in 1965. The name of the tree was first noted in records of the Plant Sciences Data Center of the American Horticultural Society, but is not formally recognized as a valid cultivar.
The American Elm cultivar Ulmus americana 'Iowa State' was cloned from a tree discovered by Professor Alexander (Sandy) McNabb of Iowa State University as the sole survivor in 40 acres (16 ha) of diseased elm at Burlington.
The American Elm cultivar Ulmus americana 'Jackson' was cloned from a selection made at Wichita, Kansas, which had reputedly shewn no signs of Dutch elm disease damage at >50 years of age.
The American Elm cultivar Ulmus americana 'Flick's Spreader' was cloned from a tree discovered by John T. Flick on a farm near Hammon, Oklahoma. Cuttings were given to the Sunshine Nursery, Clinton, Oklahoma, in 1997, which later marketed the tree as 'Flick's Spreader'.
The American Elm cultivar Ulmus americana 'Creole Queen' was cloned from a tree growing outside New Orleans and was released in 2008.
The American Elm cultivar Ulmus americana 'Miller Park' is a selection made by the University of Minnesota. Originally identified as MNT-0365, it was cloned from an old elm surviving in Hennepin County, Minnesota. 'Miller Park' is currently (2016) being researched but no data have yet been published. The tree is named for the eponymous park in Eden Prairie, in the environs of Minneapolis.
References
- 1 2 Ouellet, C-E., & Pomerleau, R., (1965). Can. J. Bot. 1965; 43:85-96
- ↑ 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.
- ↑ Miller, Fredric; Ware, George (2001-02-01). "Resistance of Temperate Chinese Elms (Ulmus spp.) to Feeding by the Adult Elm Leaf Beetle (Coleoptera: Chrysomelidae)". Journal of Economic Entomology. Oxford University Press (OUP). 94 (1): 162–166. doi:10.1603/0022-0493-94.1.162. ISSN 0022-0493. PMID 11233108. S2CID 42980569.
- ↑ Miller, Fredric; Ware, George; Jackson, Jennifer (2001-04-01). "Preference of Temperate Chinese Elms ( Ulmus spp.) for the Adult Japanese Beetle (Coleoptera: Scarabaeidae)". Journal of Economic Entomology. Oxford University Press (OUP). 94 (2): 445–448. doi:10.1603/0022-0493-94.2.445. ISSN 0022-0493. PMID 11332837. S2CID 7520439.
- 1 2 "Elm Leaf Beetle Survey". Archived from the original on 2011-07-19. Retrieved 17 July 2017.
- ↑ Pegg, G. F. & Brady, B. L. (2002). Verticillium Wilts. CABI Publishing. ISBN 0-85199-529-2
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