Plants 40-150 cm. Stems erect to spreading, green when young, fastigiately branched, glabrous, resinous. Leaves usually ascending or spreading; blades filiform to narrowly oblanceolate (terete or flattened, adaxially sulcate to concave), 12-55 × 0.5-3 mm, midnerves evident, usually not raised, apices acute to acuminate, faces glabrous or sparsely hairy, gland-dotted (in circular, deep pits), resinous; axillary fascicles of 2-15 leaves, shorter than subtending leaves. Heads usually borne singly. Peduncles 20-70 mm (mostly ebracteate). Involucres hemispheric, 8-14 × 8-18 mm. Phyllaries 24-32 in 2-3 series, green to tan, ovate to lanceolate, 4-10 × 0.5-3 mm, subequal, outer sometimes wholly herbaceous, usually mostly chartaceous, sometimes with green, medial stripes, midnerves conspicuous, raised, 1-2 collateral nerves often present, (margins membranous, minutely lacerate to fimbriate) apices acute to acuminate, abaxial faces usually glabrous, sometimes sparsely hairy, often stipitate-glandular, resinous. Ray florets 3-18; laminae elliptic to lanceolate, 7-15 × 2-5 mm. Disc florets 16-60; corollas 6-10 mm. Cypselae tan to brown, narrowly oblanceoloid, somewhat flattened, 4-5 mm (2-ribbed), sericeous to villous; pappi silvery, 5.8-7 mm. 2n = 18. Flowering spring-early summer. Rocky or sandy soils of mountainsides, dry creek beds, deserts, mesas, and interior plains; 70-2000 m; Ariz., Calif., Nev., N.Mex., Tex., Utah.

Plant: shrub, 4-15 dm, glabrous to ± puberulent Leaves: 10-55 mm, linear, acute; base narrowed, entire INFLORESCENCE: primary inflorescence a head, each resembling a flower; head radiate, 1, on ± leafless peduncles; involucre 8-14 mm, 10-18 mm diam, hemispheric; phyllaries in 2-3 series, linear to lanceolate, acuminate, stalked-glandular, center green, margin cut-ciliate, scabrous Flowers: Ray flowers 13-18; corollas 9-20 mm, generally yellow; Disk flowers many; corollas 6-10 mm, yellow Fruit: 4-5 mm, compressed, 6-8-veined, densely silky-hairy; pappus 5.5-7 mm, white Misc: Dry slopes, valleys; < 2000 m; Mar-May