Page author: David Giblin
Lysimachia europaea
arctic starflower, northern starflower

Distribution: Both side of the Cascades in Washington; Alaska south to California, east to Alberta and Idaho.

Habitat: Bogs and swamps, low to mid-elevations in the mountains.

Flowers: May-August

Origin: Native

Growth Duration: Perennial

Conservation Status: Not of concern


Perennial herbs from slender rootstocks and tubers, the tubers short and horizontal; flowering stems 5-20 cm. tall.


Main leaves 3-8 in a terminal whorl, elliptic to obovate, 1.5-5 cm. long, petiolate; cauline leaves few, smaller and reduced downward, sessile.


Flowers axillary from 1 or more leaf axils, on long, slender, curved pedicels; calyx parted to near the base, the 6 or 7 lobes linear-lanceolate; corolla usually white, 12-16 mm. broad, rotate, the lobes divided nearly to the base and the same number as the calyx, lance-ovate; stamens opposite the corolla lobes, exerted, the filaments glabrous, slender, considerably longer than the anthers.


Capsule opening by valves.

Identification Notes:

Trientalis europaea has a few stem leaves; Trientalis borealis has none.

Accepted Name:
Lysimachia europaea (L.) U. Manns & Anderb.

Synonyms & Misapplications:
Trientalis arctica Fisch. ex Hook. [HC]
Trientalis europaea L. [FNA8]
Trientalis europaea L. ssp. arctica (Fisch. ex Hook.) Hultén [ILBC]
Trientalis europaea L. var. aleutica Tatewaki & Kobayashi
Trientalis europaea L. var. arctica (Fisch. ex Hook.) Ledeb.
Additional Resources:

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

WA Flora Checklist: Lysimachia europaea checklist entry.

E-Flora BC: Lysimachia europaea atlas page.

CalPhotos: Lysimachia europaea photos.

USDA Plants: Lysimachia europaea information.

32 photographs:
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