Subshrubs, 100–350 cm, mildly aromatic. Stems usually 1–15, erect, brown, simple (wandlike, brittle, bases woody), glabrous. Leaves cauline (petiolate), bicolor (gray-green and dark green); blades broadly lanceolate, 3.5–12(–15) × 0.2–10 cm, relatively deeply and coarsely pinnately lobed (lobes 3–7+), faces canescent (abaxial) or glabrous or sparsely hairy (adaxial). Heads (erect or nodding, peduncles relatively slender) in open, paniculiform arrays, 15–40 × 3–10 cm (widely branched). Involucres globose, 2.5–3.5 × 2–5 mm. Phyllaries (pale green to stramineous) broadly ovate, glabrous or sparsely hairy (receptacles paleate). Florets: pistillate 0; bisexual 8–30; corollas pale yellow, 1.5–2.2 mm, resinous-glandular (style branches exsert, truncate, erose). Cypselae (light brown, shiny) ellipsoid, 1–1.2 mm, (4-angled), glabrous or glandular. 2n = 18.
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