Distribution: Occurring in the east end of the Columbia River Gorge in Washington; Washington to Oregon.
Habitat: Dry, open or sparsely wooded slopes at low elevations.
Flowers: August-October
Origin: Native
Growth Duration: Perennial
Conservation Status: Not of concern
Pollination: Bees, flies, beetles, wasps
Perennial herb, the herbage scabrous throughout, the stem branched at the woody base, erect, 3-6 dm. tall.
Leaves alternate, numerous, the lowermost early-deciduous, gradually reduced upward; leaves oblanceolate to oblong-lanceolate, 2-5 cm. long and 3-11 mm.wide, ascending, entire.
Heads clustered at the ends of the stems; involucre 8-11 mm.high, resinous and shining, the bracts strongly inbricate in several series, green-tipped; rays yellow, 5 or 8, 5-8 mm. long; disk flowers yellow; pappus of capillary bristles.
Achenes elongate.
PNW Herbaria: Specimen records of Columbiadoria hallii in the Consortium of Pacific Northwest Herbaria database
WA Flora Checklist: Columbiadoria hallii checklist entry
OregonFlora: Columbiadoria hallii information
E-Flora BC: Columbiadoria hallii atlas page
CalPhotos: Columbiadoria hallii photos