Page authors: Don Knoke, David Giblin
Linnaea borealis
twinflower
Specimens
Photos

Distribution: Widely distributed in forested and mountainous areas on both sides of the Cascades crest in Washington; Alaska to California, east in North America to the Atlantic Coast; circumboreal.

Habitat: Open forest, forest edges, and peatlands from low elevations to the alpine.

Flowers: May-September

Origin: Native

Conservation Status: Not of concern

Description:
General:

Creeping, evergreen herbs, the trailing stems elongate and somewhat hairy and woody, from which arise numerous, erect, leafy, flowering stems up to 10 cm. long.

Leaves:

Leaves opposite, short-petiolate, firm, broadly elliptic to sub-rotund, usually with a few shallow teeth, 7-25 mm. long and 5-15 mm. wide, glabrous to long-hairy.

Flowers:

Flowers in pairs on pedicels 1-2.5 cm. long, at the end of long, naked peduncles, nodding; calyx 5-lobed, 2-5 mm. long; corolla pinkish, funnel-shaped, 9-16 mm. long, the tube slender, the 5 lobes flaring; stamens 4, 2 shorter than the other 2; style elongate; ovary inferior.

Fruits:

Fruit small, dry, unequally 3-celled.

Accepted Name:
Linnaea borealis L.
Publication: Sp. Pl. 2: 631. 1753.

Synonyms & Misapplications:
(none provided)
Infraspecies:
ssp. longiflora – longtube twinflower    Widely distributed in forested and mountainous areas on both sides of the Cascades crest in Washington; Alaska to California, east in North America to the Atlantic Coast; circumboreal.
Additional Resources:

PNW Herbaria: Specimen records of Linnaea borealis in the Consortium of Pacific Northwest Herbaria database.

WA Flora Checklist: Linnaea borealis checklist entry.

E-Flora BC: Linnaea borealis atlas page.

CalPhotos: Linnaea borealis photos.

USDA Plants: Linnaea borealis information.

55 photographs:
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