Ericameria nauseosa var. hololeuca |
Ericameria nauseosa var. iridis |
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common rabbitbrush, white rabbitbrush |
Rainbow Hills rabbitbrush |
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Habit | Plants 40–120 cm (pleasantly fragrant). | Plants 10–20 cm. |
Stems | whitish, leafy, densely to loosely tomentose. |
grayish green (at least when young), leafy, faces ± compactly tomentose. |
Leaves | whitish; blades 1-nerved, filiform to linear, 10–35 × 1–2 mm, faces tomentose. |
grayish green; blades 1-nerved, linear, 15–40 × 0.8–1 mm, compactly tomentose. |
Involucres | 7–9 mm. |
12–16 mm. |
Corollas | 7–9.5 mm, tubes puberulent to cobwebby, lobes 0.5–1 mm, glabrous; style appendages shorter than stigmatic portions. |
7.8–8.7 mm, tubes glabrous, lobes 1.5–2 mm, glabrous; style appendages longer than stigmatic portions. |
Cypselae | densely hairy; pappi 5.2–7.2 mm. |
glabrous; pappi 5.2–5.8 mm. |
Phyllarie(s) | 14–16, apices erect, obtuse, abaxial faces tomentose. |
20–26, apices erect, acute to acuminate, abaxial faces glabrous. |
2n | = 18. |
= 18. |
Ericameria nauseosa var. hololeuca |
Ericameria nauseosa var. iridis |
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Phenology | Flowering late summer–fall. | Flowering late summer. |
Habitat | Well-drained, gravelly or sandy slopes | Steep slopes on ± barren, gypsiferous, Arapien shale |
Elevation | 100–2500 m (300–8200 ft) | ca. 2000 m (ca. 6600 ft) |
Distribution |
AZ; CA; ID; NM; NV; OR; UT |
UT |
Discussion | Of conservation concern. Variety iridis is known only from Sevier County. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Source | FNA vol. 20, p. 65. | FNA vol. 20, p. 65. |
Parent taxa | ||
Sibling taxa | ||
Synonyms | Bigelowia graveolens var. hololeuca, Chrysothamnus nauseosus var. hololeucus | Chrysothamnus nauseosus subsp. iridis, Chrysothamnus nauseosus var. iridis |
Name authority | (A. Gray) G. L. Nesom & G. I. Baird: Phytologia 75: 86. (1993) | (L. C. Anderson) G. L. Nesom & G. I. Baird: Phytologia 75: 86. (1993) |
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