Pungent rabbitbrush

Chrysocoma graveolens Nuttall, Gen. N. Amer. Pl. 2: 136. 1818; Chrysothamnus nauseosus (Pallas ex Pursh) Britton subsp. graveolens (Nuttall) H. M. Hall & Clements; C. nauseosus var. graveolens (Nuttall) H. M. Hall; Ericameria nauseosa var. glabrata (A. Gray) G. L. Nesom & G. I. Baird

Plants 50–160 cm. Stems yellowish green to nearly white, leafy, compactly, smoothly tomentose. Leaves greenish; blades 3-nerved, broadly linear, 30–90 × 1–3 mm, faces often tomentulose. Involucres 6–8 mm. Phyllaries 14–18, apices erect, acute, abaxial faces usually glabrous, outer sometimes sparsely hairy. Corollas 7–9+ mm, tubes puberulent or glabrous, lobes 0.6–1.5, glabrous; style appendages longer than stigmatic portions. Cypselae densely hairy; pappi 4.9–6.5 mm. 2n = 18.

Flowering late summer–fall. On plains in slightly alkaline soils; 200–2000 m; Sask.; Ariz., Colo., Idaho, Kans., Mont., Nebr., Nev., N.Mex., N.Dak., Okla., S.Dak., Tex., Utah, Wyo.