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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 '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 Chinese Elm cultivar Ulmus parvifolia 'Burgundy' is a small American development.
The Chinese Elm cultivar Ulmus parvifolia 'Golden Rey' is an American clone patented by B. Rey in 1990.
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 'Milliken' is another American introduction.
The Chinese Elm cultivar Ulmus parvifolia 'Pathfinder' is another development by A. M. Townsend of the USDA National Arboretum registered in 1990.
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 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 Chinese Elm cultivar Ulmus parvifolia 'D. B. Cole' was listed in the Arborvillage Farm Nursery Holt, Missouri, Catalogue of Fall 1991–Spring 1992, p.21.
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 '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 'Ed Wood' is intended for bonsai, or even model train set landscaping. It is however reputedly hardy to −23 °C (−10 °F).
The Chinese Elm cultivar Ulmus parvifolia 'Lois Hole' is a dwarf variety cloned from 'Frosty'.
References
- ↑ "Elm Leaf Beetle Survey". Archived from the original on 2011-07-19. Retrieved 17 July 2017.
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