Flora of North America species comparison

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Ericameria nauseosa var. juncea

Ericameria nauseosa var. iridis
Photo is of parent taxon

rush rabbitbrush
Photo is of parent taxon

Rainbow Hills rabbitbrush
Habit Plants 40–70 cm. Plants 10–20 cm.
Stems

yellowish green, usually leafless at flowering, compactly tomentose.

grayish green (at least when young), leafy, faces ± compactly tomentose.
Leaves

yellowish green;

blades 1-nerved, filiform, 10–30 × 0.7–1 mm, faces compactly tomentose.

grayish green;

blades 1-nerved, linear, 15–40 × 0.8–1 mm, compactly tomentose.
Involucres

9.5–12 mm.

12–16 mm.
Corollas

7–8.5 mm, tubes hairy, lobes 0.7–0.9 mm, villous;

style appendages longer than stigmatic portions.

7.8–8.7 mm, tubes glabrous, lobes 1.5–2 mm, glabrous;

style appendages longer than stigmatic portions.
Phyllaries

22–25, apices erect, acute, abaxial faces tomentose or glabrate.

20–26, apices erect, acute to acuminate, abaxial faces glabrous.
Cypselae

hairy;

pappi 5.6–7.6 mm.

glabrous;

pappi 5.2–5.8 mm.
2n

= 18.

= 18.

Ericameria nauseosa var. juncea

Ericameria nauseosa var. iridis
Phenology Flowering late summer–fall. Flowering late summer.
Habitat Blackbrush, matchweed, shadscale, and pinyon-juniper communities Steep slopes on ± barren, gypsiferous, Arapien shale
Elevation 1200–1800 m (3900–5900 ft) ca. 2000 m (ca. 6600 ft)
Distribution
from FNA
AZ; NV; UT
[BONAP county map]
from FNA
UT
[BONAP county map]
Discussion

Of conservation concern.

Variety iridis is known only from Sevier County.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 20, p. 66. FNA vol. 20, p. 65.
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. 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. 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. 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. speciosa, E. nauseosa var. texensis, E. nauseosa var. turbinata, E. nauseosa var. washoensis
Synonyms Bigelowia juncea, Chrysothamnus nauseosus var. junceus Chrysothamnus nauseosus subsp. iridis, Chrysothamnus nauseosus var. iridis
Name authority (Greene) G. L. Nesom & G. I. Baird: Phytologia 75: 86. (1993) (L. C. Anderson) G. L. Nesom & G. I. Baird: Phytologia 75: 86. (1993)
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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