Flora of North America species comparison

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Ericameria nauseosa var. leiosperma

Ericameria nauseosa var. oreophila
Photo is of parent taxon

common rabbitbrush, smooth-fruit rabbitbrush
Photo is of parent taxon

Great Basin rabbitbrush, rubber rabbitbrush
Habit Plants 25–60 cm. Plants 70–250 cm.
Stems

yellowish green, often leafless at flowering, densely, compactly tomentose.

greenish, usually leafy, compactly tomentose.
Leaves

yellowish green;

blades 1-nerved, filiform, 10–30 × 0.8–1 mm, faces glabrate.

yellowish green;

blades 1-nerved, filiform to linear, 20–50 × 0.8–1 mm, faces glabrate.
Involucres

8–11.5 mm.

6.5–10 mm.
Corollas

5–8.5 mm, tubes mostly glabrous, lobes 0.5–1.1 mm (erect to incurved), 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

17–31, apices erect, acute to obtuse, abaxial faces glabrous.

11–20, apices erect, acute, glabrous.
Cypselae

glabrous;

pappi 3–6.6 mm.

hairy (sometimes glabrous in Idaho populations);

pappi 4.2–7.6 mm.
2n

= 18.

= 18 (as Chrysothamnus nauseosus subsp. consimilis).

Ericameria nauseosa var. leiosperma

Ericameria nauseosa var. oreophila
Phenology Flowering late summer–fall. Flowering late summer–fall.
Habitat Gravelly and sandy soils, rocky crevices Alkaline valleys and plains
Elevation 700–2800 m (2300–9200 ft) 1200–3000 m (3900–9800 ft)
Distribution
from FNA
AZ; CA; CO; NV; UT
[BONAP county map]
from FNA
AZ; CA; CO; ID; MT; NM; NV; OR; UT; WY; Mexico (Baja California)
[BONAP county map]
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.)
Source FNA vol. 20, p. 66. FNA vol. 20, p. 67.
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. latisquamea, 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. psilocarpa, E. nauseosa var. salicifolia, E. nauseosa var. speciosa, E. nauseosa var. texensis, E. nauseosa var. turbinata, E. nauseosa var. washoensis
Synonyms Bigelowia leiosperma, Chrysothamnus nauseosus subsp. leiospermus 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: 86. (1993) (A. Nelson) G. L. Nesom & G. I. Baird: Phytologia 78: 64. (1995)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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