Distribution: Chiefly east of the Castades, southern British Columbia to California, east to Manitoba and Oklahoma.
Habitat: Dry, often alkaline places, in the valleys, plains and foothills.
Flowers: May - September
Conservation Status: Not of concern
Perennial from creeping rhizomes, 1.5-6 dm. tall, aromatic.
Leaves nearly sessile, oblong or obovate to broadly linear, entire, 1-5 cm. long
Heads numerous, on short axillary peduncles, nodding; involucre 2-4 mm. high, it 4-6 bracts attached to each other at the base; corollas all tubular, the pistillate few, greenish, 1 mm. long; staminate flowers greenish, with undivided style, the filaments attached to each other; receptacle small, chaffy throughout; pappus none.
Achenes compressed parallel to the involucral bracts.