Subshrubs or shrubs, green, to 25 cm, usually puberulent, sometimes glabrescent, rarely glabrous. Stems erect (branched from bases). Leaves mostly opposite; blades not lobed, linear to acerose, 10-18 mm. Peduncles 0-10 mm, puberulent or glabrous. Calyculi of 5 lance-linear bractlets, lengths ¹/2+ phyllaries. Involucres campanulate to cylindric, 5-7 mm. Phyllaries ca. 13, margins of outer distinct less than ¹/6 their lengths, abaxial faces puberulent or glabrous. Ray florets 7-8; corollas lemon-yellow, laminae 5-6 × 2-3 mm. Disc florets 18-25+; corollas pale yellow, 3-4 mm. Cypselae 3-3.5 mm; pappi of ca. 20 scales (each a fascicle of 3-5 bristles), 3-4 mm. 2n = 16, 24. Flowering through the year, mostly summer-fall. Calcareous outcrops, gypseous soils; 1000-2000+ m; Ariz., Nev., N.Mex., Tex., Utah; Mexico.

Plant: Subshrub usually <30 cm Leaves: leaves with translucent oil glands, filiform and clustered at nodes