Plants 30-150 cm. Heads (25-)100-350+. Phyllaries: outer 3-4, basally connate ³/4 their lengths, 4-6 mm, apices rounded to usually obtuse to sometimes acute; inner 3-4, 3.2-4 mm, apices rounded or obtuse to weakly acute or mucronate. Ray florets 3-4; corollas 4.5-6 × 2-2.5 mm. Disc florets 6-13. Cypselae 3-3.5 mm, hairs strongly wavy; pappi 0 or of 2-4 scales 1-2 mm. 2n = 30. Flowering Jun-Oct. Savannas, oak-juniper woodlands, pine forests; of conservation concern; 1500-2300 m; Ariz. Variety floribunda is known from the Chiricahua, Dos Cabezas, Dragoon, Little Dragoon, and Mule mountains.