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)
Pollination: Apomixis, bumblebees, bees, beetles
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.
Manteia acaulis Raf.
Rubus acaulis Michx. [HC]
Rubus arcticus L. ssp. acaulis (Michx.) Focke [IFBC]
Rubus arcticus L. var. acaulis (Michx.) B. Boivin
PNW Herbaria: Specimen records of Rubus arcticus in the Consortium of Pacific Northwest Herbaria database.
WA Flora Checklist: Rubus arcticus checklist entry.
OregonFlora: Rubus arcticus information.
E-Flora BC: Rubus arcticus atlas page.
CalPhotos: Rubus arcticus photos.
USDA Plants: Rubus arcticus information.
