Perennials, (15–)20–60(–70) cm (mat-forming), sometimes faintly aromatic (rhizomes creeping, relatively thin). Stems 1–3, erect or ascending, white, simple (stout), densely tomentose to floccose. Leaves basal and cauline (petiolate), silver-gray; blades oblanceolate, (proximalmost) 3–10 × 1–5 cm, pinnatifid (lobes relatively broad, rounded; distal leaves, on flowering stems, smaller), faces densely tomentose. Heads (erect or spreading, peduncles 0 or to 3 mm) in dense, paniculiform, racemiform, or spiciform arrays 8–20 × 2–4 cm. Involucres broadly campanulate, 5–8 × 6–7 mm. Phyllaries broadly lanceolate, tomentose. Florets: pistillate 12–16; bisexual 25–30; corollas yellow (narrow or tubular), 3.2–4 mm (unusually large), glabrous or sparsely hairy (style branches prominent, erect, blunt). Cypselae (dark brown) narrowly oblong-linear (slightly flattened, smooth), 3–4 mm, glabrous. 2n = 18.
