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| NAS - Nonindigenous Aquatic Species |
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Common Name: Moneywort
Synonyms and Other Names: Lysimachia zawadzkii Wiesner, Creeping jenny; Twopenny grass; Centimorbia; Monnoyere; Wandering Jenny; Creeping charlie
Taxonomy: available through 
Identification: Lysimachia nummularia is an herbaceous perennial. It is a low-growing, creeping ground cover which might form leafy mat. Roots where leaf nodes come in contact with the soil. This cultivar features rounded, slightly ruffled, yellow leaves (to 3/4" diameter). Profuse, cup-shaped, bright yellow flowers (to 3/4" across) appear in early summer. Stems - Repent, tp +40cm long (and sometimes much longer), herbaceous, multiple from the base, typically simple, with 4 wings from deccurent leaf tissue. Wings to .7mm broad, forming vertical grooves along the sides of the stems. Leaves - Opposite, petiolate. Petioles to +/-5mm long, glabrous, with a wide and shallow adaxial groove. Blades orbicular, to +/-2.5cm in diameter, glabrous, entire, somewhat cordate at the base, dark green above, lighter green below. Veins of the leaves impressed above, expressed below. Inflorescence - Single axillary flowers. Peduncles to +/-2cm long, erect, glabrous. Flowers - Petals typically 5 (sometimes 6), united at the very base and forming a small corolla tube. Tube to 1mm long. Free portion of petals glabrous, yellow, to +1.4cm long, 5-7mm broad, rounded at the apex, oblong-elliptic. Stamens 5(6), adnate at the base of the petals, erect, united at the base. Filaments yellow, broadest at the base and tapering to the apex, glandular puberulent, to 5mm long. Anthers yellow, to 2mm long. Ovary superior, green, glabrous, globose, 1.2mm in diameter. Style green, glabrous, 5mm long. Stigma small, purplish. Sepals 5(6), green, spreading, with the margins slightly revolute in the basal 1/2, ovate-lanceolate, acute to acuminate at the apex, to +/-7mm long, +/-5mm broad, glabrous.
It is in flower from May to August, and the seeds ripen from August to September. The flowers are hermaphrodite (have both male and female organs) and are pollinated by bees and flies. The plant is self-fertile.
Size: horizontal stems to 40cm+
Native Range:
Eurasia
Nonindigenous Occurrences:
Common in eastern United States. wide spread in: AR, CA, CO, CT, DC, GA, IL, IN, KS, KY, LA, MA, ME, MI, MN, MO, MS, NC, NH, NJ, NY, OH, OR, PA, RI, SC, TN, VA, VT, WA, WI, WV.
1st Great Lakes sighting 1882 Lake Ontario (Mills)
Ecology: Habitats include stream banks, bottoms, seeps, fens, roadsides, ditches, woodland borders, thickets, moist areas of black soil prairies, cemeteries, and edges of yards. Damp situations in pastures and by the sides of streams, avoiding acid soils. The plant prefers light (sandy), medium (loamy) and heavy (clay) soils and can grow in heavy clay soil. It can grow in semi-shade (light woodland) or no shade. Elevation: between 0-3280 feet.
Means of Introduction: Deliberate release
Status: Established
Impact of Introduction: Thrives in damp soils which will often kill off other types of ground covers. Probably it is too invasive for border fronts or areas adjacent to lawns. Edible uses: Tea is made from the leaves and flowers. Medical uses: Anti-scorbutic; Astringent; Diuretic; Vulnerary. Other uses: Ground cover
Remarks:
References
Ownbey, G.B., and T. Morley. 1991. Vascular plants of Minnesota. A checklist and atlas. University of Minnesota Press. Minneapolis
Seymour, F.C. 1969. The flora of New England. Charles E. Tuttle Company.
Rutland Smith, E.B. 1988. An atlas and annotated list of the vascular plants of Arkansas, 2d ed.
Thomas, R.D., and C.M. Allen. 1997. Atlas of the vascular flora of Louisiana, Vols. 1-3 Louisiana Department of Wildlife and Fisheries. Natural Heritage Program. Baton Rouge
Other Resources:
Illinois Plant Information Network (ILPIN). Online: http://www.fs.fed.us/ne/delaware/ilpin/ilpin
USDA/NRCS PLANTS Database
Wisconsin vascular plants. Online: http://wiscinfo.doit.wisc.edu/herbarium/
Author: Ling Cao
Contributing Agencies: 
NOAA - GLERL
Revision Date: 7/17/2008 Citation for this information:
Ling Cao. 2009. Lysimachia nummularia. USGS Nonindigenous Aquatic Species Database, Gainesville, FL.
<http://nas.er.usgs.gov/queries/factsheet.asp?SpeciesID=2680> Revision Date: 7/17/2008
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