Chinese elm USDA PLANTS Symbol: ULPA
U.S. Nativity: Exotic
Habit: Hardwood Trees
Ulmus parvifolia Jacq.

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Taxonomic Rank: Magnoliopsida: Urticales: Ulmaceae
Synonym(s): lacebark elm
Native Range: N. & C. China, Korea, Japan (REHD);

Appearance
Ulmus parvifolia is an erect tree from 30-60 ft. tall with a slender trunk and crown. The bark is exfoliating and flakey with colors ranging from gray, green, orange, and tan to red-brown.
Foliage
The small, elliptical, leaves are from 0.8-2 in. long, to 0.5-1 in. wide. The lea margins are single-toothed with a few double-toothed. The leaf base is unequal.
Flowers
The small, tight green inflorescence arises from the leaf axil. It blooms from August through September.
Fruit
Fruits are samaras, lime green when immature, and then maturing to a deep russet about October. The seed is notched at the tip and nearly fills the samara when mature.
Ecological Threat
Ulmus parvifolia can be found in a variety of different habitat types such as meadow, prairie, and landscaping. It prefers full to partial sun, and well drained soils.

Identification, Biology, Control and Management Resources

Selected Images from Invasive.orgView All Images at Invasive.org


Fruit(s); Ulmus parvifolia; lacebark elm
Richard Webb, , Bugwood.org
Additional Resolutions & Image Usage

Bark; Ulmus parvifolia; lacebark elm
Richard Webb, , Bugwood.org
Additional Resolutions & Image Usage

Tree(s); Ulmus parvifolia; lacebark elm
Richard Webb, , Bugwood.org
Additional Resolutions & Image Usage

Bark;
Karan A. Rawlins, University of Georgia, Bugwood.org
Additional Resolutions & Image Usage

Bark;
Karan A. Rawlins, University of Georgia, Bugwood.org
Additional Resolutions & Image Usage

Foliage;
Karan A. Rawlins, University of Georgia, Bugwood.org
Additional Resolutions & Image Usage

Stem(s);
Karan A. Rawlins, University of Georgia, Bugwood.org
Additional Resolutions & Image Usage

Foliage; fruit; branching
Karan A. Rawlins, University of Georgia, Bugwood.org
Additional Resolutions & Image Usage

Foliage; leaf margins crenate
Karan A. Rawlins, University of Georgia, Bugwood.org
Additional Resolutions & Image Usage

Foliage; leaf attachment
Karan A. Rawlins, University of Georgia, Bugwood.org
Additional Resolutions & Image Usage

Fruit(s); mature
Franklin Bonner, USFS (ret.), Bugwood.org
Additional Resolutions & Image Usage

Bark;
Vern Wilkins, Indiana University, Bugwood.org
Additional Resolutions & Image Usage

EDDMapS Distribution:
This map is incomplete and is based only on current site and county level reports made by experts and records obtained from USDA Plants Database. For more information, visit www.eddmaps.org
 


State(s) Where Reported invasive.
Based on state level agency and organization lists of invasive plants from WeedUS database.

U.S. National Parks where reported invasive:
Rock Creek National Park (Washington, D.C.)



Invasive Listing Sources:
Faith Campbell, 1998
Hoffman, R. & K. Kearns, Eds. 1997. Wisconsin manual of control recommendations for ecologically invasive plants. Wisconsin Dept. Natural Resources, Bureau of Endangered Resources. Madison, Wisconsin. 102pp.
Jil M. Swearingen, Survey of invasive plants occurring on National Park Service lands, 2000-2007
Mid-Atlantic Exotic Pest Plant Council, 2005
New Jersey Department of Agriculture, Division of Plant Industry, 2004