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.