Ulmus parvifolia 'Emer I'
| Ulmus parvifolia | |
|---|---|
| Cultivar | 'Emer I' or 'Emerald Isle' = Athena™ |
| Origin | USA |
The Chinese Elm cultivar Ulmus parvifolia 'Emer I' or 'Emerald Isle' (selling name Athena™) was cloned from a tree planted circa 1920 on the University of Georgia campus at Athens.[1]
Description
Athena is a small tree rarely exceeding 6 m in height, with a slightly broader, dense and rounded crown [1]. The leaves are a medium, glossy green, turning drab brown in autumn. The exfoliating, mottled bark is considered very attractive.[2]
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 [3]. As with the species overall, damage caused by Japanese Beetle is relatively slight.[2]
Cultivation
Athena featured in the elm trials [4] 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 [5] coordinated by Colorado State University. Athena was introduced to Australia in 2002 as part of the Australian Urban Street Planting Programme [6]; it is not known to have been introduced to Europe.
Synonymy
- ? '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
- University of Idaho arboretum. One tree. Acc. no. 1998011
- U S National Arboretum [7], Washington, D.C., USA. Acc. no. 69142.
Nurseries
- North America
(Widely available)
- Australasia
References
- ^ Santamour, F. S., & Bentz, S. E. Updated checklist of elm (Ulmus) cultivars for use in North America. Journal of Arboriculture, 21(3): May, 1995.
- ^ Brady, C., Condra, J., & Potter, D. (2008) Resistance of Landscape-suitable Elm (Ulmus spp.) Cultivars to Japanese Beetle, Leaf Miners, and Gall Makers. 2008 Research Report, Nursery & Landscape Program, pp 15, 16. University of Kentucky.
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.