Ericameria nauseosa var. graveolens |
Ericameria nauseosa var. texensis |
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pungent rabbitbrush |
Texas rabbitbrush |
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Habit | Plants 50–160 cm. | Plants 20–40(–50) cm. |
Stems | yellowish green to nearly white, leafy, compactly, smoothly tomentose. |
whitish, leafy, loosely tomentose. |
Leaves | greenish; blades 3-nerved, broadly linear, 30–90 × 1–3 mm, faces often tomentulose. |
grayish green; blades 1-nerved, linear, 10–35 × 1(–1.5) mm, faces loosely tomentulose. |
Involucres | 6–8 mm. |
8–11.5 mm. |
Corollas | 7–9+ mm, tubes puberulent or glabrous, lobes 0.6–1.5, glabrous; style appendages longer than stigmatic portions. |
8.4–10.9 mm, tubes glabrous or sparsely puberulent, lobes 0.6–1.3 mm, glabrous; style appendages shorter than stigmatic portions. |
Phyllaries | 14–18, apices erect, acute, abaxial faces usually glabrous, outer sometimes sparsely hairy. |
16–23 (outer margins ciliate), apices erect, acute to obtuse (outer) to acuminate (inner), outer abaxial faces tomentose, glabrescent. |
Cypselae | densely hairy; pappi 4.9–6.5 mm. |
glabrous; pappi 5.2–7.4 mm. |
2n | = 18. |
= 18. |
Ericameria nauseosa var. graveolens |
Ericameria nauseosa var. texensis |
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Phenology | Flowering late summer–fall. | Flowering fall. |
Habitat | On plains in slightly alkaline soils | Limestone cliffs and among boulders, less common on gravel alluvium of streambeds, associated with bigtooth maple, hornbeam, madrone, and yellow pine woodlands |
Elevation | 200–2000 m (700–6600 ft) | 1500–2100 m (4900–6900 ft) |
Distribution |
AZ; CO; ID; KS; MT; ND; NE; NM; NV; OK; SD; TX; UT; WY; SK |
NM; TX |
Discussion | Of conservation concern. Variety texensis is known from the Guadalupe Mountains. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Source | FNA vol. 20, p. 65. | FNA vol. 20, p. 69. |
Parent taxa | ||
Sibling taxa | ||
Synonyms | Chrysocoma graveolens, Chrysothamnus nauseosus subsp. graveolens, Chrysothamnus nauseosus var. graveolens, E. nauseosa var. glabrata | Chrysothamnus nauseosus subsp. texensis |
Name authority | (Nuttall) Reveal & Schuyler: Proc. Acad. Nat. Sci. Philadelphia 149: 20. (1999) | (L. C. Anderson) G. L. Nesom & G. I. Baird: Phytologia 75: 88. (1993) |
Web links |