''Ulmus parvifolia'' 'Emer II or Emerald Vase (selling name ) is a
Chinese Elm
''Ulmus parvifolia'', commonly known as the Chinese elm or lacebark elm, is a species native to eastern Asia, including China, India, Japan, Korea, and Vietnam.Fu, L., Xin, Y. & Whittemore, A. (2002)Ulmaceae in Wu, Z. & Raven, P. (eds) ''Flora of ...
cultivar
A cultivar is a type of cultivated plant that people have selected for desired traits and when propagated retain those traits. Methods used to propagate cultivars include: division, root and stem cuttings, offsets, grafting, tissue culture ...
that was cloned from a tree planted circa 1910 on the
University of Georgia
, mottoeng = "To teach, to serve, and to inquire into the nature of things.""To serve" was later added to the motto without changing the seal; the Latin motto directly translates as "To teach and to inquire into the nature of things."
, establ ...
campus at
Athens
Athens ( ; el, Αθήνα, Athína ; grc, Ἀθῆναι, Athênai (pl.) ) is both the capital and largest city of Greece. With a population close to four million, it is also the seventh largest city in the European Union. Athens dominates ...
.
Description
can reach a height of about 15 m, with a more upright crown shape than its stablemate
, 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
Dutch elm disease (DED) is caused by a member of the sac fungi (Ascomycota) affecting elm trees, and is spread by elm bark beetles. Although believed to be originally native to Asia, the disease was accidentally introduced into Americas, America ...
, and unaffected by the Elm Leaf Beetle ''
Xanthogaleruca luteola
''Xanthogaleruca luteola'', commonly known as the elm-leaf beetle, is a beetle species in the family Chrysomelidae that is native to Europe but invasive in other parts of the world.http://cisr.ucr.edu/elm_leaf_beetle.html - Center for Invasive Sp ...
''.
As with the species overall, damage caused by
Japanese Beetle
The Japanese beetle (''Popillia japonica'') is a species of scarab beetle. The adult measures in length and in width, has iridescent copper-colored elytra and a green thorax and head. It is not very destructive in Japan (where it is control ...
is relatively slight (< 8% defoliation).
[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.]
Cultivation
is reputedly drought tolerant, but in the elm trial
conducted by
Northern Arizona University at
Holbrook Holbrook may refer to:
Places
England
*Holbrook, Derbyshire, a village
* Holbrook, Somerset, a hamlet in Charlton Musgrove
* Holbrook, Sheffield, South Yorkshire, a former mining village in Mosborough ward, now known as Halfway
*Holbrook, Suffolk, ...
, Arizona, proved unsuited to the hot, arid climate and sustained over 50% mortality in its first year, as did its sibling . The tree is being evaluated in the National Elm Trial]
coordinated by Colorado State University. has been introduced to Australia and Europe , and was marketed briefly in England by the Thornhayes Nursery, Devon.
Accessions
;North America
*Bartlett Tree Experts, North Carolina, US. Acc. no. 2001-166
*Holden Arboretum, US. Acc. no. 98-26
*Brenton Arboretum, Dallas Center, Iowa, US. One tree, acquired 2009. Acc. no. not known.
*Scott Arboretum, US. Acc. no. 2000-006
*Smith College, US. Acc. nos 302, 33603
*University of Idaho arboretum, US. One tree. Acc. no. 1998010
*United States National Arboretum, U S National Arboretum]
Washington, D.C., US. Acc. no. 64442
Nurseries
;North America
(Widely available)
;Australasia
*Fleming's Nurser
Monbulk, Victoria, Australia, Victoria, Australia.
References
External links
*http://www.ces.ncsu.edu/depts/hort/consumer/factsheets/trees-new/cultivars/ulmus_parvifolia.htm ''Ulmus parvifolia'' cultivar list.
*https://web.archive.org/web/20030413074605/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.
{{DEFAULTSORT:Ulmus parvifolia 'Emer II' Allee
Chinese elm cultivar
Ulmus articles with images
Ulmus