Flora of North America species comparison

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Ericameria nauseosa var. iridis

Ericameria nauseosa var. juncea
Photo is of parent taxon

Rainbow Hills rabbitbrush
Photo is of parent taxon

rush rabbitbrush
Habit Plants 10–20 cm. Plants 40–70 cm.
Stems

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

yellowish green, usually leafless at flowering, compactly tomentose.
Leaves

grayish green;

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

yellowish green;

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

12–16 mm.

9.5–12 mm.
Corollas

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

style appendages longer than stigmatic portions.

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

style appendages longer than stigmatic portions.
Phyllaries

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

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

glabrous;

pappi 5.2–5.8 mm.

hairy;

pappi 5.6–7.6 mm.
2n

= 18.

= 18.

Ericameria nauseosa var. iridis

Ericameria nauseosa var. juncea
Phenology Flowering late summer. Flowering late summer–fall.
Habitat Steep slopes on ± barren, gypsiferous, Arapien shale Blackbrush, matchweed, shadscale, and pinyon-juniper communities
Elevation ca. 2000 m (ca. 6600 ft) 1200–1800 m (3900–5900 ft)
Distribution
from FNA
UT
[BONAP county map]
from FNA
AZ; NV; 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. 65. FNA vol. 20, p. 66.
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. 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
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
Synonyms Chrysothamnus nauseosus subsp. iridis, Chrysothamnus nauseosus var. iridis Bigelowia juncea, Chrysothamnus nauseosus var. junceus
Name authority (L. C. Anderson) G. L. Nesom & G. I. Baird: Phytologia 75: 86. (1993) (Greene) 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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