Distribution: Occurring west of the Cascades crest and east in the Columbia River Gorge in Washington; southern British Columbia to California.
Habitat: Thickets, stream banks, and swampy places at lower elevations.
Growth Duration: Perennial
Conservation Status: Not of concern
Deciduous shrub 1-2 m. tall, prickly to nearly unarmed, the prickles straight, the stem not bristly.
Leaves alternate, pinnate, puberulent on the lower surface, not glandular; leaflets 5-9, elliptic to ovate, 1.5-4 cm. long and 0.7-2 cm. wide, finely serrate.
Flowers small, in flat-topped cymes terminating the branches of the season, seldom solitary; calyx lobes 5, 1-1.5 cm. long and 2.5-3.5 mm. wide at the base, constricted in the middle, with coarse, stalked glands on the back; the calyx tube glabrous and bluish-glaucous, 3-5 mm. thick; petals 5, 1.2-2 cm. long, pink; stamens and pistils numerous.
Hips purplish, globose or ellipsoid, 6-12 mm. long and thick, the achenes numerous, 3 mm. long, stiffly long-hairy along one side.
PNW Herbaria: Specimen records of Rosa pisocarpa in the Consortium of Pacific Northwest Herbaria database.
WA Flora Checklist: Rosa pisocarpa checklist entry.
OregonFlora: Rosa pisocarpa information.
E-Flora BC: Rosa pisocarpa atlas page.
CalPhotos: Rosa pisocarpa photos.
USDA Plants: Rosa pisocarpa information.