Ericameria nauseosa var. ceruminosa |
Ericameria nauseosa var. graveolens |
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desert rabbitbrush, sharp bract rabbitbrush |
pungent rabbitbrush |
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Habit | Plants 50–70 cm. | Plants 50–160 cm. |
Stems | yellowish green, moderately leafy to nearly leafless, compact tomentose. |
yellowish green to nearly white, leafy, compactly, smoothly tomentose. |
Leaves | yellowish green; blades 1-nerved, filiform, 10–30 × 0.7–1 mm, faces tomentulose. |
greenish; blades 3-nerved, broadly linear, 30–90 × 1–3 mm, faces often tomentulose. |
Involucres | 7–8.5 mm. |
6–8 mm. |
Corollas | 6–7.5 mm, tubes glabrous, lobes 1.5–2.5 mm, glabrous; style appendages shorter than stigmatic portions. |
7–9+ mm, tubes puberulent or glabrous, lobes 0.6–1.5, glabrous; style appendages longer than stigmatic portions. |
Phyllaries | 16–26 (in vertical ranks), apices recurved, acuminate, abaxial faces tomentose to glabrate, glutinous. |
14–18, apices erect, acute, abaxial faces usually glabrous, outer sometimes sparsely hairy. |
Cypselae | hairy; pappi 4.5–6.7 mm. |
densely hairy; pappi 4.9–6.5 mm. |
2n | = 18. |
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Ericameria nauseosa var. ceruminosa |
Ericameria nauseosa var. graveolens |
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Phenology | Flowering late summer–fall. | Flowering late summer–fall. |
Habitat | Gravelly arroyos | On plains in slightly alkaline soils |
Elevation | 700–1700 m (2300–5600 ft) | 200–2000 m (700–6600 ft) |
Distribution |
CA |
AZ; CO; ID; KS; MT; ND; NE; NM; NV; OK; SD; TX; UT; WY; SK |
Discussion | Variety ceruminosa grows in the Mojave Desert. (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 | Linosyris ceruminosus, Chrysothamnus nauseosus subsp. ceruminosus, Chrysothamnus nauseosus var. ceruminosus | Chrysocoma graveolens, Chrysothamnus nauseosus subsp. graveolens, Chrysothamnus nauseosus var. graveolens, E. nauseosa var. glabrata |
Name authority | (Durand & Hilgard) G. L. Nesom & G. I. Baird: Phytologia 75: 85. (1993) | (Nuttall) Reveal & Schuyler: Proc. Acad. Nat. Sci. Philadelphia 149: 20. (1999) |
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