Flora of North America species comparison

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Ericameria nauseosa var. iridis
Photo is of parent taxon

Rainbow Hills rabbitbrush
Habit Plants 10–20 cm.
Stems

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

grayish green;

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

12–16 mm.
Corollas

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

style appendages longer than stigmatic portions.
Phyllaries

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

glabrous;

pappi 5.2–5.8 mm.
2n

= 18.

Ericameria nauseosa var. iridis
Phenology Flowering late summer.
Habitat Steep slopes on ± barren, gypsiferous, Arapien shale
Elevation ca. 2000 m (ca. 6600 ft)
Distribution
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. 65.
Parent taxa 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
Synonyms Chrysothamnus nauseosus subsp. iridis, Chrysothamnus nauseosus var. iridis
Name authority (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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