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Photo is of parent taxon

broadscale rabbitbrush

Photo is of parent taxon

common rabbit-bush, rubber rabbitbrush, showy common rabbit-brush, showy rabbitbrush

Habit Plants 130–200 cm. Plants 40–200 cm (shorter in some alpine forms).
Stems

white, leafy, loosely tomentose.

whitish, leafy, loosely tomentose.

Leaves

whitish;

blades 1-nerved, filiform, 15–45 × 1–2 mm, faces loosely tomentose.

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.

Involucres

7.5–10.5 mm.

7.5–13.5 mm.

Corollas

7–9.5 mm, tubes glabrous or puberulent, lobes 0.6–1 mm, glabrous;

style appendages equaling or shorter than stigmatic portions.

8.7–13 mm, tubes tomentose or glabrous, lobes 1.1–2.1 mm, glabrous;

style appendages longer than stigmatic portions.

Phyllaries

15–17, apices erect, obtuse, outer abaxial faces densely tomentulose, inner glabrous.

12–28, apices erect, acute, abaxial faces tomentose (especially outer), sometimes sparsely.

Cypselae

densely hairy;

pappi 4.8–7.6 mm.

densely hairy;

pappi 6–11.3 mm.

2n

= 18.

Ericameria nauseosa var. latisquamea

Ericameria nauseosa var. speciosa

Phenology Flowering fall. Flowering late summer–fall.
Habitat Dry streambeds and arroyos Dry habitats, including juniper-sage, yellow pine, and pinyon communities
Elevation 1200–2200 m (3900–7200 ft) 50–3500 m (200–11500 ft)
Distribution
from FNA
AZ; NM; Mexico (Sonora)
[BONAP county map]
from FNA
CA; CO; ID; MT; NV; OR; UT; WA; WY; AB; BC
[BONAP county map]
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.)

Source FNA vol. 20, p. 66. FNA vol. 20.
Parent taxa Asteraceae > tribe Astereae > Ericameria > Ericameria nauseosa Asteraceae > tribe Astereae > Ericameria > Ericameria nauseosa
Sibling taxa
E. nauseosa var. arenaria, E. nauseosa var. bernardina, E. nauseosa var. bigelovii, E. nauseosa var. ceruminosa, E. nauseosa var. graveolens, E. nauseosa var. hololeuca, E. nauseosa var. iridis, E. nauseosa var. juncea, E. nauseosa var. leiosperma, E. nauseosa var. mohavensis, E. nauseosa var. nana, E. nauseosa var. nauseosa, E. nauseosa var. nitida, E. nauseosa var. oreophila, E. nauseosa var. psilocarpa, E. nauseosa var. salicifolia, E. nauseosa var. speciosa, E. nauseosa var. texensis, E. nauseosa var. turbinata, E. nauseosa var. washoensis
E. nauseosa var. arenaria, E. nauseosa var. bernardina, E. nauseosa var. bigelovii, E. nauseosa var. ceruminosa, E. nauseosa var. graveolens, E. nauseosa var. hololeuca, E. nauseosa var. iridis, E. nauseosa var. juncea, E. nauseosa var. latisquamea, E. nauseosa var. leiosperma, E. nauseosa var. mohavensis, E. nauseosa var. nana, E. nauseosa var. nauseosa, E. nauseosa var. nitida, E. nauseosa var. oreophila, E. nauseosa var. psilocarpa, E. nauseosa var. salicifolia, E. nauseosa var. texensis, E. nauseosa var. turbinata, E. nauseosa var. washoensis
Synonyms Bigelowia graveolens var. latisquamea, Chrysothamnus nauseosus subsp. latisquameus Chrysothamnus speciosus, Chrysothamnus nauseosus subsp. albicaulis, Chrysothamnus nauseosus subsp. speciosus
Name authority (A. Gray) G. L. Nesom & G. I. Baird: Phytologia 75: 86. (1993) (Nuttall) G. L. Nesom & G. I. Baird: Phytologia 75: 87. (1993)
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