Page author: David Giblin
Lysimachia nummularia

Distribution: Scattered locations west of the Cascades in Washington; British Columbia south to California and Nevada; occurring in central U.S and eastern North America.

Habitat: Moist, disturbed ground along lakes, ponds, roadsides and near gardens.

Flowers: June-August

Origin: Introduced

Growth Duration: Perennial

Conservation Status: Not of concern


Prostrate, glabrous, perennial herbs, the creeping stems rooting at the nodes, covered with tiny red dots.


Leaves opposite, short-petiolate, nearly orbicular to oval, 1-3 cm. long and broad.


Flowers single in the leaf axils on pedicels 1-3 cm. long; calyx united only at the base, the 5 lobes 6-9 mm. long, cordate-lanceolate; corolla divided nearly to the base, rotate, yellow, the 5 lobes 8-12 mm. long, with glandular hairs on the margins and on the base of the upper surfaces; stamens 5, exerted, opposite the corolla lobes; filaments glandular-pubescent, several times as long as the anthers, unequal, united at the base;


Capsule opening by 5 valves.

Accepted Name:
Lysimachia nummularia L.
Publication: Sp. Pl. 1: 148. 1753. 1753.

Synonyms & Misapplications:
(none provided)
Additional Resources:

PNW Herbaria: Specimen records of Lysimachia nummularia in the Consortium of Pacific Northwest Herbaria database.

WA Flora Checklist: Lysimachia nummularia checklist entry.

E-Flora BC: Lysimachia nummularia atlas page.

CalPhotos: Lysimachia nummularia photos.

USDA Plants: Lysimachia nummularia information.

24 photographs:
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