Ericameria nauseosa var. nana |
Ericameria nauseosa var. washoensis |
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dwarf rabbitbrush, little rabbitbrush |
rubber rabbitbrush, Washoe rabbitbrush |
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Habit | Plants 10–30 cm. | Plants 30–45(–100) cm. |
Stems | whitish, leafy, loosely tomentose. |
whitish, sparsely leafy, loosely tomentose. |
Leaves | dark green to grayish; blades 1-nerved, filiform to linear, 30–40 × 1–3 mm, faces compactly tomentose. |
grayish green; blades 1–3-nerved, spatulate to narrowly oblanceolate, 20–30 × 2–3 mm, faces loosely hairy. |
Involucres | 8–13 mm. |
10–12 mm. |
Corollas | 7.5–10 mm, tubes glabrous or moderately hairy, lobes 1.6–2.5 mm, glabrous; style appendages shorter than stigmatic portions. |
7.5–9(–10) mm, tubes puberulent, lobes 1.3–1.6 mm, villous; style appendages longer than stigmatic portions. |
Phyllaries | 14–18, apices erect, acute to obtuse, outer abaxial faces sparsely tomentose, inner glabrous. |
16–20(–30), (brownish costal nerves often evident) apices acute to obtuse, outer abaxial faces sparsely villous to tomentose, inner tomentulose. |
Cypselae | densely hairy; pappi 5.2–9 mm. |
distally pilose; pappi 6.5–10 mm. |
2n | = 18. |
= 18. |
Ericameria nauseosa var. nana |
Ericameria nauseosa var. washoensis |
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Phenology | Flowering late summer–fall. | Flowering late summer–fall. |
Habitat | Dry, rocky ridges and cliffs | Rocky, open sites in juniper and pinyon grasslands |
Elevation | 1200–2000 m (3900–6600 ft) | 1500–1700 m (4900–5600 ft) |
Distribution |
ID; OR; WA |
CA; NV |
Discussion | Variety washoensis is known from northeastern California and northwestern Nevada. of conservation concern (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Source | FNA vol. 20, p. 67. | FNA vol. 20, p. 69. |
Parent taxa | ||
Sibling taxa | ||
Synonyms | Chrysothamnus nauseosus var. nanus, Chrysothamnus nauseosus subsp. nanus | Chrysothamnus nauseosus subsp. washoensis, E. nauseosa var. washoensis |
Name authority | (Cronquist) G. L. Nesom & G. I. Baird: Phytologia 75: 87. (1993) | (L. C. Anderson) G. L. Nesom & G. I. Baird: Phytologia 75: 88. (1993) |
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