Related Research Articles
Ulmus 'Morton Plainsman' is a hybrid cultivar raised by the Morton Arboretum from a crossing of Siberian Elm and a Japanese Elm grown from openly pollinated seed donated by the Agriculture Canada Research Station at Morden, Manitoba. Tested in the US National Elm Trial coordinated by Colorado State University, Vanguard averaged a survival rate of 78% after 10 years.
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 '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 Japanese Elm cultivar Ulmus davidianavar.japonica 'Mitsui Centennial' is a cold-resistant selection raised at the Morden Experimental Station, Manitoba, Canada, in the 1970s.
The Chinese Elm cultivar Ulmus parvifolia 'Emer II' or 'Emerald Vase' was cloned from a tree planted circa 1910 on the University of Georgia campus at Athens.
The Chinese Elm cultivar Ulmus parvifolia 'Drake' was marketed by the Monrovia Nursery of Azusa, California from 1952–53.
The Chinese Elm cultivar Ulmus parvifolia 'Zettler' is one of three recent American introductions selected for their cold hardiness.
The Chinese Elm cultivar Ulmus parvifolia 'Matthew' is one of three American introductions selected for their cold hardiness.
The Siberian elm cultivar Ulmus pumila 'Dropmore' was grown from seed collected by F. L. Skinner, of Dropmore, Manitoba, in Harbin, China.
The Siberian Elm cultivar Ulmus pumila 'Park Royal' is a cold-hardy selection raised by the Sheridan Nursery, Toronto, Ontario, Canada.
The Japanese Elm cultivar Ulmus davidianavar.japonica 'JFS-Bieberich' 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 '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 elm cultivar Ulmus 'Rugosa' [:'wrinkled', the leaves], was first listed in Audibert's Tonelle (1817), as "U. campestris Linn. 'Rugosa' = orme d'Avignon [Avignon elm] ", but without description. A description followed in the Revue horticole, 1829. Green (1964) identified this cultivar with one listed by Hartwig and Rümpler in Illustrirtes Gehölzbuch (1875) as Ulmus montana var. rugosaHort.. A cultivar of the same name appeared in Loddiges' catalogue of 1836 and was identified by Loudon in Arboretum et Fruticetum Britannicum (1838) as Ulmus montana var. rugosaMasters, Masters naming the tree maple-bark elm. Ulmus montana was used at the time both for wych cultivars and for some cultivars of the Ulmus × hollandica group.
The possible hybrid cultivar Ulmus 'Kansas Hybrid' was raised by the Kansas Nursery Co., Salina, Kansas in the 1920s from a seedling exhibiting hybrid characteristics, and maintained by grafting. The inclusion of the word "hybrid" is considered to render the cultivar name invalid.
The American Elm cultivar Ulmus americana 'Hines' was listed in the accessions of the Morden Arboretum (1970), apparently sourced from the Hines Nursery, Souris, Manitoba in 1940. The tree was not recognized as a valid cultivar by some authorities.
The Chinese Elm cultivar Ulmus parvifolia 'Prairie Shade' is an American clone selected in 1973 in Oklahoma.
The Chinese Elm cultivar Ulmus parvifolia 'Burnley Select' was grown from seed taken from a tree at the Burnley (horticultural) College, University of Melbourne and selected by Dr Peter May.
The Japanese Elm cultivar Ulmus davidianavar.japonica 'Reseda' is an American cultivar raised by the Wisconsin Alumni Research Foundation (WARF) as clone no. 43-8. 'Reseda' was grown from seed sent from Hokkaido, Japan, in the late 1950s. Although not released in its own right, it was destined to become the female parent of the highly successful hybrid cultivars 'New Horizon' and 'Rebona'.
References
- ↑ 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.