Page authors: Ben Legler, David Giblin
Rubus lasiococcus
roughfruit berry, dwarf bramble, hairy-fruit smooth dewberry

Distribution: Occurring on both sides of the Cascades crest and in the Olympic Mountains in Washington; British Columbia to California.

Habitat: Moist to dry woods, lowlands to subalpine.

Flowers: June-August

Origin: Native

Growth Duration: Perennial

Conservation Status: Not of concern

Pollination: Apomixis, bumblebees, bees, beetles


Unarmed, pubescent, trailing perennial with stolonous, freely-rooting, herbaceous stems up to 2 m. long, the erect flowering stems up to 1 dm. long.


Leaf blades broadly cordate-reniform, 3-6 cm. broad, shallowly to deeply 3-lobed, the lobes rounded, doubly serrate; 1-3 reduced leaves on the flowering stems.


Flowers 1 or 2 on each stem; calyx puberulent, the 5 lobes lanceolate, pointed, 4-7 mm. long, reflexed; petals 5, white, 5-8 mm. long; stamens numerous, pistils 7-15.


Drupelets puberulent, juicy, semi-coherent, red, the fruit under 1 cm. broad.

Accepted Name:
Rubus lasiococcus A. Gray
Publication: Proc. Amer. Acad. Arts 17: 201. 1882.

Synonyms & Misapplications:
Comarobatia lasiococca (A. Gray) Greene
Additional Resources:

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

WA Flora Checklist: Rubus lasiococcus checklist entry.

OregonFlora: Rubus lasiococcus information.

E-Flora BC: Rubus lasiococcus atlas page.

CalPhotos: Rubus lasiococcus photos.

USDA Plants: Rubus lasiococcus information.

25 photographs:
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