Plants 30-100 cm . Stems erect to ascending, green when young, fastigiately branched, glabrous, gland-dotted, resinous. Leaf blades ascending, sometimes spreading when older, filiform to narrowly oblanceolate (adaxially sulcate to concave), 10-20 × 1-2 mm, midnerves not evident, apices acute, sometimes apiculate, faces glabrous, regularly gland-dotted (in circular, deep pits), resinous; axillary leaf fascicles sometimes present, shorter than subtending leaves. Heads in irregular cymiform arrays (to 7 cm wide). Peduncles 3-15 mm (bracts 3-20+, mostly leaflike, distal scalelike). Involucres turbinate, 3-5 × 3-5 mm. Phyllaries 12-20 in 3-4 series, tan, linear to lanceolate, 1-3.5 × 0.5-1 mm, unequal, mostly chartaceous, sometimes herbaceous-tipped, erect, midnerves raised, somewhat expanded apically, subapical resin ducts usually present, (margins scarious to narrowly membranous, glabrous or ciliate) apices erect, acute, sometimes apiculate, abaxial faces glabrous. Ray florets 3-6; laminae 4-5 × 1-2 mm. Disc florets 6-16; corollas 5-6 mm. Cypselae tan to brown, turbinate to narrowly oblanceolate, 3.5-4 mm (ribs ca. 5), villous; pappi off-white to brown, 3.5-5 mm. 2n = 18. Flowering fall. Rocky, desert mountains on slopes, mesas, canyons, and rock walls; 1000-2000 m; Ariz., Calif., Nev., N.Mex., Tex., Utah; Mexico (Chihuahua).

Plant: shrub, 3-10 dm, glabrous, aromatic Leaves: 10-30 mm, generally subcylindric, ± acute, entire INFLORESCENCE: primary inflorescence a head, each resembling a flower; heads radiate, in cymes; involucre 3-5 mm, 3-5 mm diam, obconic; phyllaries 12-20 in 3-4 series, ± linear, acute, glabrous, midrib a brownish to yellowish gland Flowers: Ray flowers 3-11; corollas 8-11 mm, generally yellow; Disk flowers 10-18; corollas 5.5-6.5 mm, yellow Fruit: 3.5-4 mm, narrowly obconic, obscurely 4-ribbed, densely white-soft-hairy; pappus 5-8 mm, tan Misc: Rocky canyons, pinyon/juniper woodland, creosote-bush scrub; 1000-2000 m.; Sep-Oct