Ulmus parvifolia 'Emer I'

Infobox Cultivar | name = "Ulmus parvifolia"
cultivar = 'Emer I' or 'Emerald Isle' Athena™
origin = USAThe Chinese Elm "Ulmus parvifolia" Jacq. cultivar 'Emer I' or 'Emerald Isle' (Athena™) was cloned from a tree planted circa 1920 on the University of Georgia campus at Athens Santamour, F. S., & Bentz, S. E. Updated checklist of elm (Ulmus) cultivars for use in North America. "Journal of Arboriculture", 21(3): May, 1995. ] .

Description

'Emer 1' is a small tree rarely exceeding 6 m in height, with a slightly broader, dense and rounded crown. The leaves are a medium, glossy green, turning drab brown in autumn. The exfoliating, mottled bark is considered very attractive.

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 featured in the elm trials [http://www.for.nau.edu/cms/content/view/512/706/] conducted by Northern Arizona University at Holbrook, Arizona, but was unsuited to the hot, arid climate and sustained over 50 % mortality in its first year. It is currently being evaluated in the National Elm Trial [http://treehealth.agsci.colostate.edu/research/nationalelmtrial/NET_Cultivars.htm] coordinated by Colorado State University. 'Emer 1' was introduced to Australia in 2002 as part of the Australian Urban Street Planting Programme [http://www.austep.net.au/evaluations.asp?site_ref=37] ; it is not known to have been introduced to Europe.

ynonymy

*? 'Athena Classic' (unchecked name)

Accessions

North America

*Bartlett Tree Experts acc. nos. 96-2159, 2000-076,077,079,081,083,084, 2003-941,942, 00-064, L467, L468.
*New York Botanical Garden acc. no. 3934/95

Nurseries

;North America(Widely available);Australasia
*Fleming's Nursery [http://www.flemings.com.au/] , Monbulk, Victoria, Australia.

References

External links

*http://www.ces.ncsu.edu/depts/hort/consumer/factsheets/trees-new/cultivars/ulmus_parvifolia.htm "Ulmus parvifolia" cultivar list.
*http://fletcher.ces.state.nc.us/programs/nursery/metria/metria11/warren/elm.htm Return of the Elm - the status of elms in the nursery industry in 2000. Warren, K., J. Frank Schmidt and Co.