Ulmus parvifolia 'Sempervirens'

Ulmus parvifolia 'Sempervirens'

Infobox Cultivar | name = "Ulmus parvifolia"
cultivar = 'Sempervirens'
origin = USA
The Chinese Elm "Ulmus parvifolia" cultivar 'Sempervirens' is an American introduction, commonly known by the synonym 'Evergreen', and may also be in synonymy for "U. parvifolia" 'Pendens'.

Description

Semi-evergreen to evergreen depending on climate, it is described as having a rounded crown and gracefully arching branches bearing deep-green foliage.

Pests and diseases

The species and its cultivars are highly resistant, but not immune, to Dutch elm disease, and unaffected by the Elm Leaf Beetle "Xanthogaleruca luteola" [http://www.sunshinenursery.com/survey.htm] .

Cultivation

The tree was first listed by Bailey & Bailey in "Hortus Second", 747, 1941 Green, P. S. (1964). Registration of cultivar names in Ulmus. "Arnoldia", Vol. 24. Arnold Arboretum, Harvard University. [http://arnoldia.arboretum.harvard.edu/pdf/articles/1605.pdf] ] , and remains in commercial cultivation in the USA. It is not known to be in cultivation in Europe or Australasia.

ynonymy

*"Ulmus parvifolia" 'Evergreen': "Plant Buyer's Guide", ed. 5, 253, 1949.
*"Ulmus parvifolia" 'Pendens', possible synonym.
*"Ulmus parvifolia sempervirens" 'True Green': Monrovia Nursery Catalogue, 1971.

Accessions

North America

*Bartlett Tree Experts, North Carolina acc. no. 1451
*Brooklyn Botanic Garden [http://www.bbg.org/cgi/bgbase/search.cgi] , New York, acc. no. X00486.

Nurseries

North America

*C J Growers, San Diego, California
*ForestFarm [http://www.forestfarm.com/search/search.asp?aPage=1&index=genus&field-keywords=ulmus&Go.x=7&Go.y=6] , Williams, Oregon (as 'Evergreen').
*Monrovia Nurseries [http://www.monrovia.com/PlantInf.nsf/08510e01e61cc962882571a9005a9153/27bfb2bac6693a018825684d00725e5a!OpenDocument&Highlight=0,ulmus] , Azusa, California

References

External links

*http://www.ces.ncsu.edu/depts/hort/consumer/factsheets/trees-new/cultivars/ulmus_parvifolia.htm "Ulmus parvifolia" cultivar list.


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