creeping yellow loosestrife, creeping Jenney USDA PLANTS Symbol: LYNU
U.S. Nativity: Exotic
Habit: Forbs/Herbs
Lysimachia nummularia L.

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Taxonomic Rank: Magnoliopsida: Primulales: Primulaceae
Synonym(s): creeping jenny, moneywort
Native Range: Europe (BAIL);

Appearance
Lysimachia nummularia is an herbaceous, low-growing, perennial plant in the primrose family. The smooth creeping stems branch frequently and can grow up to 2 ft (m) long and 2-4 in (5.1-10.2 cm) tall. It is native to temperate Asia and to Europe.
Foliage
The leaves are opposite, simple and broadly ovate 0.25-1.5 in (0.6-3.8 cm) long with entire margins. The leaves are obtuse at both ends, resembling coins and giving it the common name, moneywort.
Flowers
This plant often does not flower at all. But when it does the flowers are yellow with small dark red spots. The flowers arise from the leaf axils and have pedicels about 0.25-1.5 in (0.6-3.8 cm) long. It blooms from June to August.
Fruit
Fruit are capsules which contain 1-5 seeds each. The seeds are small.
Ecological Threat
Lysimachia nummularia can be found in a variety of different habitat types; however, it grows most vigorously and poses the biggest threat in moist areas such as wet meadows, swamps, floodplain forests, stream banks, bottoms, ditches, roadsides and along the banks of small water bodies. It can form a mat-like growth capable of excluding more desirable native plant species. It is now found across the United States and Canada.

Identification, Biology, Control and Management Resources

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


Foliage;
Chris Evans, University of Illinois, Bugwood.org
Additional Resolutions & Image Usage

Flower(s); Leaves and flowers
John M. Randall, The Nature Conservancy, Bugwood.org
Additional Resolutions & Image Usage

Flower(s);
Leslie J. Mehrhoff, University of Connecticut, Bugwood.org
Additional Resolutions & Image Usage

Flower(s);
Leslie J. Mehrhoff, University of Connecticut, Bugwood.org
Additional Resolutions & Image Usage

Flower(s);
Leslie J. Mehrhoff, University of Connecticut, Bugwood.org
Additional Resolutions & Image Usage

Flower(s);
Leslie J. Mehrhoff, University of Connecticut, Bugwood.org
Additional Resolutions & Image Usage

Flower(s);
Leslie J. Mehrhoff, University of Connecticut, Bugwood.org
Additional Resolutions & Image Usage

Foliage;
Leslie J. Mehrhoff, University of Connecticut, Bugwood.org
Additional Resolutions & Image Usage

Flower(s);
Leslie J. Mehrhoff, University of Connecticut, 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:
Antietam National Battlefield (Maryland)
Chesapeake and Ohio Canal National Historical Park (Maryland, Washington, D.C., and West Virginia)
Colonial National Historical Park (Virginia)
Harpers Ferry National Historical Park (West Virginia)
Monocacy National Battlefield Park (Maryland)



Invasive Listing Sources:
City of Ann Arbor Michigan Parks and Recreation
Connecticut Invasive Plant Working Group
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.
Indiana Native Plant and Wildflower Society
Jil M. Swearingen, Survey of invasive plants occurring on National Park Service lands, 2000-2007
John Randall, The Nature Conservancy, Survey of TNC Preserves, 1995.
Maryland Department of Natural Resources, 1994
Mid-Atlantic Exotic Pest Plant Council, 2005
Missouri Department of Conservation,
Native Plant Society of Oregon, 2008
New Jersey Department of Agriculture, Division of Plant Industry, 2004
Tatyana Livschultz, Pennsylvania survey of invasive plants,
Tennessee Exotic Pest Plant Council
Virginia Invasive Plant Species List