Bigelow’s rabbitbrush

Linosyris bigelovii A. Gray in War Department [U.S.], Pacif. Railr. Rep. 4(5): 98, plate 12. 1857; Chrysothamnus nauseosus (Pallas ex Pursh) Britton subsp. bigelovii (A. Gray) H. M. Hall & Clements

Plants 15–120 cm. Stems whitish, nearly leafless at flowering, loosely tomentose. Leaves mostly grayish white; blades 1-nerved, filiform, 15–30 × 0.5–1 mm, faces tomentulose. Involucres 10.5–12.5 mm. Phyllaries 14–18(–25), apices erect, acute to acuminate, abaxial faces tomentulose. Corollas 9–11 mm, tubes glabrous or puberulent, lobes 0.8–1.5 mm, glabrous; style appendages longer than stigmatic portions. Cypselae glabrous; pappi 7.2–11 mm. 2n = 18.

Flowering late summer–fall. Dry slopes and mesas; 1300–2200 m; Ariz., Colo., N.Mex., Utah.