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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 'Brandon' was raised by Lacombe Nurseries Lacombe, Alberta, Canada, before 1969; it may be synonymous with another cultivar from the same source known as 'Patmore', selected and raised by R. H. Patmore from a native tree in Brandon, Manitoba.
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 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 Chinese Elm cultivar Ulmus parvifolia 'Matthew' is one of three American introductions selected for their cold hardiness.
The Chinese Elm cultivar Ulmus parvifolia 'King's Choice' is one of the early American selections best known for its winter hardiness, able to withstand temperatures of -30 deg. Celsius. 'King's Choice' was patented in 1985.
The Chinese Elm cultivar Ulmus parvifolia 'Todd' was developed by Fleming's Nurseries in Victoria, Australia, and registered in 2001.
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 '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 'L'Assomption' was selected from seedlings grown from X-irradiated seed at the eponymous experimental station in Quebec before 1965.
Ulmus parvifolia 'D. B. Cole' is a Chinese Elm cultivar that was listed in the Arborvillage Farm Nursery Holt, Missouri, Catalogue of Fall 1991–Spring 1992, p. 21.
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.
The Chinese Elm cultivar Ulmus parvifolia 'Red Fall' is an American clone selected by S. Bieberich of the Sunshine Nursery, Clinton, Oklahoma.
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 'Stone's Dwarf' was commercially released in the US in 1978.
The Chinese elm cultivar Ulmus parvifolia 'The Thinker' was selected by M. Hayman from a tree on the campus of the University of Louisville, Kentucky.
The Chinese Elm cultivar Ulmus parvifolia 'Orange Ribbon' was tested in the United States for cold-hardiness. The name is considered invalid by some, for want of fuller description.
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 Chinese Elm cultivar Ulmus parvifolia 'Jade Empress' is an American selection.
References
- ↑ "Elms". Archived from the original on 2006-11-14. Retrieved 2007-02-01.
- ↑ "Elm Leaf Beetle Survey". Archived from the original on 2011-07-19. Retrieved 17 July 2017.
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