Distribution: From the Cascade Mountains west in Washington; Washington south to Oregon.
Habitat: Moist woods and meadows, from sea level to 5000 feet in the mountains.
Flowers: June-August
Origin: Native
Conservation Status: Not of concern
Perennial herbs from slender, creeping rhizomes, the stems arising singly, erect, 1-4 dm. tall, glabrous.
Leaves in 5-8 whorls of 4, with coarse, firm hairs on the margins and 3 main veins, elliptic to elliptic-ovate, 1.5-5 cm. long and 1/3 to 2/3 as wide.
Inflorescence of several peduncles from the axils of terminal and often sub-terminal whorls of leaves, with many flowers; calyx obsolete; corolla rotate, white, about 3 mm. wide, the 4 lobes much longer than the tube, pointed; ovary 2-celled, inferior.
Fruit dry, 2 mm. high, with numerous well-developed, hooked bristles
PNW Herbaria: Specimen records of Galium oreganum in the Consortium of Pacific Northwest Herbaria database.
WA Flora Checklist: Galium oreganum checklist entry.
E-Flora BC: Galium oreganum atlas page.
CalPhotos: Galium oreganum photos.
USDA Plants: Galium oreganum information.