Distribution: Occurring chiefly east of the Cascades crest in Washington; southern British Columbia south to California, east to Idaho, Utah, Arizona and New Mexico.
Habitat: Dry, open places in the deserts and foothills.
Conservation Status: Not of concern
Branching annual, 0.5-4 dm. tall, with spreading hairs and stalked glands, especially above.
Leaves 1-6 cm. long, narrow, the lower pinnatifid to toothed, the upper entire, chiefly alternate.
Heads terminating the branches; involucre 6-9 mm. high, glandular and hairy, herbaceous, flattened on the back below, with thin margins folded around the achene; rays 4-15 mm. long, broad, white and 3-toothed, pistillate and fertile; disk flowers yellow, perfect and fertile; receptacle broad and flat, with a series of thin, chaffy bracts between the ray and disk flowers; ray flowers without pappus, disk flowers with about 10 white pappus bristles on the achene.