Ericameria nauseosa var. nitida |
Ericameria nauseosa var. washoensis |
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shiny-bract rabbitbrush |
rubber rabbitbrush, Washoe rabbitbrush |
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Habit | Plants 60–150 cm. | Plants 30–45(–100) cm. |
Stems | yellowish green, leafy at flowering, densely tomentose. |
whitish, sparsely leafy, loosely tomentose. |
Leaves | yellowish green; blades 1-nerved, linear, 30–50 × 1–1.5 mm, faces glabrate. |
grayish green; blades 1–3-nerved, spatulate to narrowly oblanceolate, 20–30 × 2–3 mm, faces loosely hairy. |
Involucres | 10–12.5 mm. |
10–12 mm. |
Corollas | 9.5–11 mm, tubes mostly glabrous, lobes 0.7–1 mm, glabrous or villous; style appendages longer than stigmatic portions. |
7.5–9(–10) mm, tubes puberulent, lobes 1.3–1.6 mm, villous; style appendages longer than stigmatic portions. |
Phyllaries | 13–19 (outer weakly keeled), apices erect, acute (outer) or acute to obtuse (inner), outer abaxial faces scurfy-tomentulose, inner glabrous. |
16–20(–30), (brownish costal nerves often evident) apices acute to obtuse, outer abaxial faces sparsely villous to tomentose, inner tomentulose. |
Cypselae | usually glabrous, sometimes hairy; pappi 9–10 mm. |
distally pilose; pappi 6.5–10 mm. |
2n | = 18. |
= 18. |
Ericameria nauseosa var. nitida |
Ericameria nauseosa var. washoensis |
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Phenology | Flowering late summer–fall. | Flowering late summer–fall. |
Habitat | Sandy gravels of dry streambeds | Rocky, open sites in juniper and pinyon grasslands |
Elevation | 1200–1800 m (3900–5900 ft) | 1500–1700 m (4900–5600 ft) |
Distribution |
AZ; NM; UT |
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 subsp. nitidus, Chrysothamnus nauseosus var. nitidus | Chrysothamnus nauseosus subsp. washoensis, E. nauseosa var. washoensis |
Name authority | (L. C. Anderson) 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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