Moneywort

(Lysimachia nummularia or L. nummelaria)

Creeping, low-growing perennial with round, opposite leaves and yellow flowers.

Other names for this plant include:

• Common names: Creeping Jenny, creeping Joan, running Jenny, wandering Jenny, wandering sailor
• Scientific names: None.

Ecological threat:

• Invades moist forests, woodland edges, floodplain forests, swamps, wet meadows, fens, stream borders, lawns, roadside ditches and grasslands.
• Moneywort has been known to choke small springs and seeps in rich woods due to its rapid spread and ability to form dense layers.
• This species is capable of rapid vegetative spread that can form dense, low-growing mats.
• This species forms a dense ground cover layer, thereby altering the plant community structure and reducing the population size of some native species in the herb layer.
• Noted as an invasive species throughout much of the United States.