Page authors: Don Knoke, David Giblin
Rubus arcticus

Distribution: Occurring east of the Cascades crest in north-central Washington; Alaska to Oregon, east to the Rocky Mountains, and east across Canada to the Great Lakes Region and the northern Atlantic Coast.

Habitat: Montane meadows, bogs, and woodlands to alpine tundra.

Flowers: June-August

Origin: Native

Growth Duration: Perennial

Conservation Status: Threatened in Washington (WANHP)


Strongly rhizomatous perennial with erect, herbaceous, soft-hairy, annual flowering stems 2-15 cm. tall.


Leaves 2-5 per stem, with conspicuous ovate-lanceolate, entire stipules; leaf blades trifoliate, the leaflets ovate to obovate, 1.5-3 cm. long, serrate to bi-serrate.


Flowers terminal, usually single, rarely 2; calyx finely pubescent, the 5 lobes narrowly lanceolate, reflexed, 8-11 mm. long; petals 5, erect, pink to crimson or rose, spatulate-obovate, 10-16 mm. long; stamens 30-40; pistils 20-30, the style enlarged upward.


Drupelets coherent, coming free of the receptacle, the fruit reddish, globose, 1 cm. broad.

Accepted Name:
Rubus arcticus L.

Synonyms & Misapplications:
Cylactis arctica (L.) Raf. ex B.D. Jacks. ssp. acaulis (Michx.) W.A. Weber
Manteia acaulis Raf.
Rubus acaulis Michx. [HC]
Rubus arcticus L. ssp. acaulis (Michx.) Focke [IFBC]
Rubus arcticus L. var. acaulis (Michx.) B. Boivin
Additional Resources:

PNW Herbaria: Specimen records of Rubus arcticus in the Consortium of Pacific Northwest Herbaria database.

WA Flora Checklist: Rubus arcticus checklist entry.

E-Flora BC: Rubus arcticus atlas page.

CalPhotos: Rubus arcticus photos.

USDA Plants: Rubus arcticus information.

2 photographs:
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