Page authors: Don Knoke, David Giblin
Lysimachia ciliata
fringed yellow-loosestrife

Distribution: Occurring chiefly east of the Cascades crest in Washington; British Columbia to Oregon, east across most of North America to the Atlantic Coast.

Habitat: Riparian zones, wet meadows, marshes, shores, springs, and moist forest.

Flowers: June-August

Origin: Native

Growth Duration: Perennial

Conservation Status: Not of concern


Glabrous perennial herbs from slender rhizomes, the stems erect., 2-13 dm. tall, usually simple.


Leaves opposite, on petioles 0.5-6 mm. long with marginal hairs; leaf blade broadly lanceolate to ovate-lanceolate, 4-15 cm. long and 1.5-6.5 cm. wide, entire, glabrous, the tip pointed.


Flowers solitary in the upper leaf axils; pedicles 1.5-7 cm. long, usually glandular; sepals 5, 2.5-9 mm. long, lanceolate; petals 5, widely spreading, yellow, sometimes with a reddish base, 5-12 mm. long, the tip with a short spine, with stalked glands on the lower surface; stamens 5, the filaments united at the base.


Capsules 5-7 mm. long, glabrous.

Accepted Name:
Lysimachia ciliata L.
Publication: Sp. Pl. 1: 147. 1753.

Synonyms & Misapplications:
Lysimachia greeneana Hand.-Mazz.
Lysimachia longipedicellata (Lunell) Hand.-Mazz.
Lysimachia membrenacea (Greene) Hand.-Mazz.
Nummularia ciliata (L.) Kuntze
Steironema ciliata (L.) Baudo
Steironema longipedicellatum (Lunell) Lunell
Steironema membranaceum Greene
Steironema pumilum Greene
Additional Resources:

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

WA Flora Checklist: Lysimachia ciliata checklist entry.

E-Flora BC: Lysimachia ciliata atlas page.

CalPhotos: Lysimachia ciliata photos.

USDA Plants: Lysimachia ciliata information.

22 photographs:
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