Ulmus parvifolia 'Emer II' = Allee
|Cultivar||'Emer II' or 'Emerald Vase' = Allee|
Allee can reach a height of about 15 m, with a more upright crown shape than its stablemate Athena, its spread approximately 13 m, with arching branches bearing medium green, glossy leaves turning orange to rust red in autumn.  The exfoliating, mottled bark has a puzzle-like pattern, and is considered 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. As with the species overall, damage caused by Japanese Beetle is relatively slight (< 8% defoliation).
Allee is reputedly drought tolerant, but in the elm trials  conducted by Northern Arizona University at Holbrook, Arizona, Allee proved unsuited to the hot, arid climate and sustained over 50% mortality in its first year, as did its sibling Athena. The tree is being evaluated in the National Elm Trial  coordinated by Colorado State University. Allee has reached Australia, but is not known to have been introduced to Europe.
- North America
- Bartlett Tree Experts, North Carolina. Acc. no. 2001-166
- Holden Arboretum. Acc. no. 98-26
- Brenton Arboretum, Dallas Center, Iowa. One tree, acquired 2009. Acc. no. not known.
- Scott Arboretum. Acc. no. 2000-006
- Smith College. Acc. nos 302, 33603
- University of Idaho arboretum. One tree. Acc. no. 1998010
- U S National Arboretum , Washington, D.C., United States. Acc. no. 64442
- North America
- 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.
- "Elm Leaf Beetle Survey". Archived from the original on 2011-07-19. Retrieved 17 July 2017.
- 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.
- 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.
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