Ulmus parvifolia 'Emer II'
Encyclopedia
The Chinese Elm Ulmus parvifolia Jacq. cultivar 'Emer II' or 'Emerald Vase' (Allee) was cloned from a tree planted circa 1910 on the University of Georgia
campus at Athens
.
, its spread approximately 13 m, with arching branches bearing medium green, glossy leaves turning orange to rust red in autumn http://www.ncsu.edu/jcraulstonarboretum/photography/raulston_slides/raulston_slides_results.php?fullsearch=&box=&slide=&date=&photographer=&country=&usstate=&city=&location=campus&keywords=&othernotes=&plantnames=&commonnames=&families=&digitized=&plantnameID=. The exfoliating, mottled bark has a puzzle-like pattern, and is considered outstandingly attractive .
, and unaffected by the Elm Leaf Beetle Xanthogaleruca luteola
http://www.sunshinenursery.com/survey.htm. As with the species overall, damage caused by Japanese Beetle
is relatively slight (< 8% defoliation) .
at Holbrook
, Arizona
, 'Emer II' (Allee) proved unsuited to the hot, arid climate and sustained over 50% mortality in its first year, as did its sibling 'Emer I' (Athena). The tree 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 II' is not known to have been introduced to Europe
.
(Widely available)
Australasia
University of Georgia
The University of Georgia is a public research university located in Athens, Georgia, United States. Founded in 1785, it is the oldest and largest of the state's institutions of higher learning and is one of multiple schools to claim the title of the oldest public university in the United States...
campus at Athens
Athens, Georgia
Athens-Clarke County is a consolidated city–county in U.S. state of Georgia, in the northeastern part of the state, comprising the former City of Athens proper and Clarke County. The University of Georgia is located in this college town and is responsible for the initial growth of the city...
.
Description
The tree can reach a height of about 15 m, with a more upright crown shape than 'Emer I', (Athena)Ulmus parvifolia 'Emer I'
The Chinese Elm Ulmus parvifolia Jacq. cultivar Emer I or Emerald Isle was cloned from a tree planted circa 1920 on the University of Georgia campus at Athens .-Description:...
, its spread approximately 13 m, with arching branches bearing medium green, glossy leaves turning orange to rust red in autumn http://www.ncsu.edu/jcraulstonarboretum/photography/raulston_slides/raulston_slides_results.php?fullsearch=&box=&slide=&date=&photographer=&country=&usstate=&city=&location=campus&keywords=&othernotes=&plantnames=&commonnames=&families=&digitized=&plantnameID=. The exfoliating, mottled bark has a puzzle-like pattern, and is considered outstandingly attractive .
Pests and diseases
The species and its cultivars are highly resistant, but not immune, to Dutch elm diseaseDutch elm disease
Dutch elm disease is a disease caused by a member of the sac fungi category, affecting elm trees which is spread by the elm bark beetle. Although believed to be originally native to Asia, the disease has been accidentally introduced into America and Europe, where it has devastated native...
, and unaffected by the Elm Leaf Beetle Xanthogaleruca luteola
Xanthogaleruca luteola
Xanthogaleruca luteola, commonly known as the Elm Leaf Beetle, is a serious pest of the elm. Indigenous to Europe, it was accidentally introduced to North America. Both the imagines and larvae feed on the emergent leaves of the elm...
http://www.sunshinenursery.com/survey.htm. As with the species overall, damage caused by Japanese Beetle
Japanese beetle
The beetle species Popillia japonica is commonly known as the Japanese beetle. It is about long and wide, with iridescent copper-colored elytra and green thorax and head...
is relatively slight (< 8% defoliation) .
Cultivation
The tree is reputedly drought tolerant, but in the elm trials http://www.for.nau.edu/cms/content/view/512/706/ conducted by Northern Arizona UniversityNorthern Arizona University
Northern Arizona University is a public university located in Flagstaff, Arizona, United States. It is accredited by the North Central Association of Colleges and Schools, and has 39 satellite campuses in the state of Arizona. The university offers both undergraduate and graduate degrees.As of...
at Holbrook
Holbrook, Arizona
-Historical events:*During 1881 & 1882, railroad tracks were laid down and a railroad station was built. The community was then named Holbrook after the first engineer of the Atlantic and Pacific Railroad...
, Arizona
Arizona
Arizona ; is a state located in the southwestern region of the United States. It is also part of the western United States and the mountain west. The capital and largest city is Phoenix...
, 'Emer II' (Allee) proved unsuited to the hot, arid climate and sustained over 50% mortality in its first year, as did its sibling 'Emer I' (Athena). The tree is currently being evaluated in the National Elm Trial
National Elm Trial
The National Elm Trial is an American volunteer effort to evaluate a range of newly developed elm cultivars as replacements for elms destroyed by Dutch elm disease...
http://treehealth.agsci.colostate.edu/research/nationalelmtrial/NET_Cultivars.htm coordinated by Colorado State University. 'Emer II' is not known to have been introduced to Europe
Europe
Europe is, by convention, one of the world's seven continents. Comprising the westernmost peninsula of Eurasia, Europe is generally 'divided' from Asia to its east by the watershed divides of the Ural and Caucasus Mountains, the Ural River, the Caspian and Black Seas, and the waterways connecting...
.
Accessions
North America- Bartlett Tree Experts, North CarolinaNorth CarolinaNorth Carolina is a state located in the southeastern United States. The state borders South Carolina and Georgia to the south, Tennessee to the west and Virginia to the north. North Carolina contains 100 counties. Its capital is Raleigh, and its largest city is Charlotte...
. Acc. no. 2001-166 - Holden ArboretumHolden ArboretumThe Holden Arboretum, in Kirtland, Ohio, USA, is one of the largest arboretums and botanical gardens in the United States, with over 3,500 acres , 600 acres of which are devoted to collections and gardens. Diverse natural areas and ecologically sensitive habitats make up the rest of the holdings...
. Acc. no. 98-26 - Brenton ArboretumBrenton ArboretumThe Brenton Arboretum 121 acres is a new arboretum and botanical garden in early stages of development, located at 2629 Palo Circle, Dallas Center, Iowa, USA. The Arboretum aims to display all Iowa native trees and shrubs suitable to the site, as well as many other tree species which can grow in...
, Dallas Center, IowaIowaIowa is a state located in the Midwestern United States, an area often referred to as the "American Heartland". It derives its name from the Ioway people, one of the many American Indian tribes that occupied the state at the time of European exploration. Iowa was a part of the French colony of New...
. One tree, acquired 2009. Acc. no. not known. - Scott ArboretumScott ArboretumScott Arboretum is an arboretum located across the campus of Swarthmore College, 500 College Avenue, Swarthmore, Pennsylvania. It is open to the public daily without charge....
. Acc. no. 2000-006 - Smith CollegeSmith CollegeSmith College is a private, independent women's liberal arts college located in Northampton, Massachusetts. It is the largest member of the Seven Sisters...
. Acc. nos 302, 33603 - University of IdahoUniversity of IdahoThe University of Idaho is the State of Idaho's flagship and oldest public university, located in the rural city of Moscow in Latah County in the northern portion of the state...
arboretum. One tree. Acc. no. 1998010 - U S National ArboretumUnited States National ArboretumThe United States National Arboretum is an arboretum in Washington, D.C., operated by the United States Department of Agriculture's Agricultural Research Service as a division of the Henry A. Wallace Beltsville Agricultural Research Center...
http://www.usna.usda.gov/index.htm, Washington, D.C.Washington, D.C.Washington, D.C., formally the District of Columbia and commonly referred to as Washington, "the District", or simply D.C., is the capital of the United States. On July 16, 1790, the United States Congress approved the creation of a permanent national capital as permitted by the U.S. Constitution....
, USA. Acc. no. 64442
Nurseries
North America(Widely available)
Australasia
- Fleming's Nursery http://www.flemings.com.au/, Monbulk, Victoria, AustraliaAustraliaAustralia , officially the Commonwealth of Australia, is a country in the Southern Hemisphere comprising the mainland of the Australian continent, the island of Tasmania, and numerous smaller islands in the Indian and Pacific Oceans. It is the world's sixth-largest country by total area...
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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.