Annuals, 8-40+ cm. Stems mostly erect. Leaves all or mostly alternate (proximal sometimes opposite); blades simple or 1-2-ternately lobed, lobes filiform to linear, 5-12(-25+) × 0.5-1.5(-3+) mm, faces sparsely scabrellous, usually gland-dotted as well. Involucres 3-4+ × 6-9+ mm. Ray florets 8-13+; corolla laminae 3-4(-10+) mm. Disc florets 30-60+; corollas 2.5-3.5 mm. Cypselae 2-3+ mm, faces ± hirtellous; pappi of (outer cypselae) ± ovate to quadrate, apically ± muticous scales 0.5-1 mm or (innermost cypselae) lanceolate to lance-subulate, apically ± aristate scales 1-2.5 mm. Flowering (May-)Sep-Oct. Granite outcrops; 1200-1600 m; Ariz., N.Mex.