White rabbitbrush

Bigelowia graveolens Nuttall var. hololeuca A. Gray, Proc. Amer. Acad. Arts 8: 645. 1873 (as Bigelovia); Chrysothamnus nauseosus (Pallas ex Pursh) Britton var. hololeucus (A. Gray) H. M. Hall

Plants 40–120 cm (pleasantly fragrant). Stems whitish, leafy, densely to loosely tomentose. Leaves whitish; blades 1-nerved, filiform to linear, 10–35 × 1–2 mm, faces tomentose. Involucres 7–9 mm. Phyllarie 14–16, apices erect, obtuse, abaxial faces tomentose. Corollas 7–9.5 mm, tubes puberulent to cobwebby, lobes 0.5–1 mm, glabrous; style appendages shorter than stigmatic portions. Cypselae densely hairy; pappi 5.2–7.2 mm. 2n = 18.

Flowering late summer–fall. Well-drained, gravelly or sandy slopes; 100–2500 m; Ariz., Calif., Idaho, Nev., N.Mex., Oreg., Utah.