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FNA | Family List | FNA Vol. 20 | Asteraceae | Ericameria

21u. Ericameria nauseosa (Pallas ex Pursh) G. L. Nesom & G. I. Baird var. washoensis (L. C. Anderson) G. L. Nesom & G. I. Baird, Phytologia. 75: 88. 1993.

Washoe rabbitbrush

Chrysothamnus nauseosus (Pallas ex Pursh) Britton subsp. washoensis L. C. Anderson, Phytologia 38: 315, fig. 3. 1978; Ericameria nauseosa var. washoensis (L. C. Anderson) G. L. Nesom & G. I. Baird

Plants 30–45(–100) cm. Stems whitish, sparsely leafy, loosely tomentose. Leaves grayish green; blades 1–3-nerved, spatulate to narrowly oblanceolate, 20–30 × 2–3 mm, faces loosely hairy. Involucres 10–12 mm. Phyllaries 16–20(–30), (brownish costal nerves often evident) apices acute to obtuse, outer abaxial faces sparsely villous to tomentose, inner tomentulose. Corollas 7.5–9(–10) mm, tubes puberulent, lobes 1.3–1.6 mm, villous; style appendages longer than stigmatic portions. Cypselae distally pilose; pappi 6.5–10 mm. 2n = 18.

Flowering late summer–fall. Rocky, open sites in juniper and pinyon grasslands; 1500–1700 m; of conservation concern; Calif., Nev.

Variety washoensis is known from northeastern California and northwestern Nevada.


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