Bull. Torrey Bot. Club 10: 42. 1883.
Biennials or perennials, 30–100 cm, faintly aromatic (rhizomatous). Stems 1–3, erect, reddish brown, simple (leafy), glabrous or glabrate. Leaves basal (in rosettes, petiolate) and cauline, bicolor (white and green); blades ovate, 3–7(–20) × 2–4(–6) cm, 2–3-pinnately-lobed (lobes elliptic, 2–6 mm wide; cauline sessile, smaller), faces tomentose (abaxial) or glabrous or glabrescent (adaxial), glandular. Heads (nodding, peduncles 0 or 2) in paniculiform to racemiform arrays 10–35 × 2–4 cm (often 1-sided). Involucres broadly ovate, 3–5 × 4–5(–6) mm. Phyllaries broadly ovate, sparsely hairy. Florets: pistillate 4–5(–13), (1–1.5 mm); bisexual 25–35; corollas yellow, 1.5–2 mm, glabrous. Cypselae elliptic, 0.5–0.8 mm, glabrous.
Phenology: Flowering late summer–early fall.
Habitat: Open coniferous forests, mid to upper montane
Elevation: 2200–3100 m
Ariz., Colo., N.Mex., Mexico (Chihuahua).