Strongly rhizomatous. Stems erect, simple, 40–100 cm, sometimes clustered. Herbage glabrous; the inflorescence puberulent. Leaves cauline, sessile, short-petiolate; blades lanceolate, serrate, 4–12 cm long, gradually reduced upward. Inflorescence pyramidal; heads secund on arching branches. Involucres campanulate, 3–4 mm high; phyllaries linear-lanceolate, ciliate. Rays 9 to 15; ligules 2–3 mm long. Disk flowers 7 to 12; corollas 3–5 mm long. Achenes 1–1.5 mm long, sparsely strigose
(Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).