Ericameria nauseosa var. bigelovii |
Ericameria nauseosa var. oreophila |
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Bigelow's rabbitbrush |
Great Basin rabbitbrush, rubber rabbitbrush |
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Habit | Plants 15–120 cm. | Plants 70–250 cm. |
Stems | whitish, nearly leafless at flowering, loosely tomentose. |
greenish, usually leafy, compactly tomentose. |
Leaves | mostly grayish white; blades 1-nerved, filiform, 15–30 × 0.5–1 mm, faces tomentulose. |
yellowish green; blades 1-nerved, filiform to linear, 20–50 × 0.8–1 mm, faces glabrate. |
Involucres | 10.5–12.5 mm. |
6.5–10 mm. |
Corollas | 9–11 mm, tubes glabrous or puberulent, lobes 0.8–1.5 mm, glabrous; style appendages longer than stigmatic portions. |
6–9 mm, tubes glabrous, lobes 1.5–2.5 mm, glabrous; style appendages shorter than or equaling stigmatic portions. |
Phyllaries | 14–18(–25), apices erect, acute to acuminate, abaxial faces tomentulose. |
11–20, apices erect, acute, glabrous. |
Cypselae | glabrous; pappi 7.2–11 mm. |
hairy (sometimes glabrous in Idaho populations); pappi 4.2–7.6 mm. |
2n | = 18. |
= 18 (as Chrysothamnus nauseosus subsp. consimilis). |
Ericameria nauseosa var. bigelovii |
Ericameria nauseosa var. oreophila |
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Phenology | Flowering late summer–fall. | Flowering late summer–fall. |
Habitat | Dry slopes and mesas | Alkaline valleys and plains |
Elevation | 1300–2200 m (4300–7200 ft) | 1200–3000 m (3900–9800 ft) |
Distribution |
AZ; CO; NM; UT |
AZ; CA; CO; ID; MT; NM; NV; OR; UT; WY; Mexico (Baja California) |
Discussion | The names Chrysothamnus nauseosus subsp. consimilis and var. consimilis (Ericameria nauseosa subsp. consimilis) have been used for this taxon; an equivalent combination has not been made at the varietal level in Ericameria. Variety oreophila intergrades with vars. mohavensis and speciosa. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Source | FNA vol. 20, p. 64. | FNA vol. 20, p. 67. |
Parent taxa | ||
Sibling taxa | ||
Synonyms | Linosyris bigelovii, Chrysothamnus nauseosus subsp. bigelovii | Chrysothamnus oreophilus, Chrysothamnus nauseosus var. artus, Chrysothamnus nauseosus subsp. consimilis, Chrysothamnus nauseosus var. consimilis, Chrysothamnus oreophilus var. artus, E. nauseosa var. arta, E. nauseosa subsp. consimilis |
Name authority | (A. Gray) G. L. Nesom & G. I. Baird: Phytologia 75: 85. (1993) | (A. Nelson) G. L. Nesom & G. I. Baird: Phytologia 78: 64. (1995) |
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