Ericameria nauseosa var. speciosa |
Ericameria nauseosa var. ceruminosa |
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common rabbit-bush, rubber rabbitbrush, showy common rabbit-brush, showy rabbitbrush |
desert rabbitbrush, sharp bract rabbitbrush |
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Habit | Plants 40–200 cm (shorter in some alpine forms). | Plants 50–70 cm. |
Stems | whitish, leafy, loosely tomentose. |
yellowish green, moderately leafy to nearly leafless, compact tomentose. |
Leaves | 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. |
yellowish green; blades 1-nerved, filiform, 10–30 × 0.7–1 mm, faces tomentulose. |
Involucres | 7.5–13.5 mm. |
7–8.5 mm. |
Corollas | 8.7–13 mm, tubes tomentose or glabrous, lobes 1.1–2.1 mm, glabrous; style appendages longer than stigmatic portions. |
6–7.5 mm, tubes glabrous, lobes 1.5–2.5 mm, glabrous; style appendages shorter than stigmatic portions. |
Phyllaries | 12–28, apices erect, acute, abaxial faces tomentose (especially outer), sometimes sparsely. |
16–26 (in vertical ranks), apices recurved, acuminate, abaxial faces tomentose to glabrate, glutinous. |
Cypselae | densely hairy; pappi 6–11.3 mm. |
hairy; pappi 4.5–6.7 mm. |
Ericameria nauseosa var. speciosa |
Ericameria nauseosa var. ceruminosa |
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Phenology | Flowering late summer–fall. | Flowering late summer–fall. |
Habitat | Dry habitats, including juniper-sage, yellow pine, and pinyon communities | Gravelly arroyos |
Elevation | 50–3500 m (200–11500 ft) | 700–1700 m (2300–5600 ft) |
Distribution |
CA; CO; ID; MT; NV; OR; UT; WA; WY; AB; BC |
CA |
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.) |
Variety ceruminosa grows in the Mojave Desert. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 20. | FNA vol. 20, p. 65. |
Parent taxa | ||
Sibling taxa | ||
Synonyms | Chrysothamnus speciosus, Chrysothamnus nauseosus subsp. albicaulis, Chrysothamnus nauseosus subsp. speciosus | Linosyris ceruminosus, Chrysothamnus nauseosus subsp. ceruminosus, Chrysothamnus nauseosus var. ceruminosus |
Name authority | (Nuttall) G. L. Nesom & G. I. Baird: Phytologia 75: 87. (1993) | (Durand & Hilgard) G. L. Nesom & G. I. Baird: Phytologia 75: 85. (1993) |
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