Ericameria nauseosa var. latisquamea |
Ericameria nauseosa var. speciosa |
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broadscale rabbitbrush |
common rabbit-bush, rubber rabbitbrush, showy common rabbit-brush, showy rabbitbrush |
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Habit | Plants 130–200 cm. | Plants 40–200 cm (shorter in some alpine forms). |
Stems | white, leafy, loosely tomentose. |
whitish, leafy, loosely tomentose. |
Leaves | whitish; blades 1-nerved, filiform, 15–45 × 1–2 mm, faces loosely tomentose. |
dark green to grayish white; blades 1-nerved, linear to linear-oblanceolate, 30–70 × 0.3–1.5(–2.5) mm, faces usually loosely, rarely compactly, tomentose. |
Involucres | 7.5–10.5 mm. |
7.5–13.5 mm. |
Corollas | 7–9.5 mm, tubes glabrous or puberulent, lobes 0.6–1 mm, glabrous; style appendages equaling or shorter than stigmatic portions. |
8.7–13 mm, tubes tomentose or glabrous, lobes 1.1–2.1 mm, glabrous; style appendages longer than stigmatic portions. |
Phyllaries | 15–17, apices erect, obtuse, outer abaxial faces densely tomentulose, inner glabrous. |
12–28, apices erect, acute, abaxial faces tomentose (especially outer), sometimes sparsely. |
Cypselae | densely hairy; pappi 4.8–7.6 mm. |
densely hairy; pappi 6–11.3 mm. |
2n | = 18. |
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Ericameria nauseosa var. latisquamea |
Ericameria nauseosa var. speciosa |
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Phenology | Flowering fall. | Flowering late summer–fall. |
Habitat | Dry streambeds and arroyos | Dry habitats, including juniper-sage, yellow pine, and pinyon communities |
Elevation | 1200–2200 m (3900–7200 ft) | 50–3500 m (200–11500 ft) |
Distribution |
AZ; NM; Mexico (Sonora) |
CA; CO; ID; MT; NV; OR; UT; WA; WY; AB; BC |
Discussion | Variety speciosa intergrades with vars. hololeuca and oreophila. Stabilized hybrids with Ericameria discoidea occur in Mono County, California. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Source | FNA vol. 20, p. 66. | FNA vol. 20. |
Parent taxa | ||
Sibling taxa | ||
Synonyms | Bigelowia graveolens var. latisquamea, Chrysothamnus nauseosus subsp. latisquameus | Chrysothamnus speciosus, Chrysothamnus nauseosus subsp. albicaulis, Chrysothamnus nauseosus subsp. speciosus |
Name authority | (A. Gray) G. L. Nesom & G. I. Baird: Phytologia 75: 86. (1993) | (Nuttall) G. L. Nesom & G. I. Baird: Phytologia 75: 87. (1993) |
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