Kuhnia eupatorioides Linnaeus var. corymbulosa Torrey & A. Gray, Fl. N. Amer. 2: 78. 1841

Plants 30–200 cm. Leaves opposite; petioles 0–10 mm; blades 1- or 3-nerved from bases, lanceolate to lance-linear, 5–90 × 2–15 mm, margins entire or coarsely dentate. Heads in paniculiform or corymbiform arrays. Peduncles 5–25 mm. Involucres 8–15 mm. Phyllaries green to stramineous, sometimes purple-tinged (lengths of outer to ¹/2 inner, apices acute to acuminate, not contorted). Florets 15–35; corollas pale yellow to pinkish lavender, 4.7–8 mm. Cypselae 2.7–5 mm. 2n = 18.

Flowering May–Oct. Open areas, wide range of soils; 200–2300 m; Ark., Colo., Ill., Ind., Iowa, Kans., Mich., Minn., Mo., Mont., Nebr., N.Mex., N.Dak., S.Dak., Tex., Wis.