Flora of North America species comparison

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Ericameria parryi var. howardii

Ericameria parryi var. monocephala
Photo is of parent taxon

Howard's rabbitbrush, Parry's rabbitbrush
Photo is of parent taxon

one-head rabbitbrush, Parry's rabbitbrush
Habit Plants 30–60 cm. Plants 5–40 cm (rigid).
Leaves

crowded, gray;

blades 1-nerved, linear, 20–40 × ca. 1 mm, faces tomentose, eglandular;

distalmost overtopping arrays.

crowded, grayish;

blades mostly 1-nerved, linear, 10–30 × 0.5–1.5 mm, faces sparsely to densely tomentulose, viscidulous;

distalmost overtopping arrays.
Involucres

9.5–12 mm.

10–11 mm.
Florets

5–7;

corollas pale yellow, 8–10.7 mm, tubes hairy, throats gradually dilated, lobes 1.2–1.7 mm.

5–7;

corollas 8–9 mm, tubes sparsely strigose, throats gradually dilated, lobes 1.5–1.8 mm.
Phyllaries

12–20, mostly chartaceous, apices spreading, acuminate.

8–12, thinly chartaceous, apices erect to spreading, attenuate.
Heads

5–10+ in compact, racemiform arrays, or terminal glomerules.

1–2(–4) at branch tips.
2n

= 18.

= 18.

Ericameria parryi var. howardii

Ericameria parryi var. monocephala
Phenology Flowering late summer–fall. Flowering late summer–fall.
Habitat Upland slopes, tablelands Open subalpine forests, talus, and alpine barrens
Elevation 200–2900 m (700–9500 ft) 2800–3700 m (9200–12100 ft)
Distribution
from FNA
AZ; CO; NE; NM; UT; WY
[BONAP county map]
from FNA
CA; NV
[BONAP county map]
Discussion

Variety howardii grows within and east of the Rocky Mountains.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Of conservation concern.

Variety monocephala is known from the Sierra Nevada.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 20, p. 73. FNA vol. 20, p. 74.
Parent taxa Asteraceae > tribe Astereae > Ericameria > Ericameria parryi Asteraceae > tribe Astereae > Ericameria > Ericameria parryi
Sibling taxa
E. parryi var. affinis, E. parryi var. aspera, E. parryi var. attenuata, E. parryi var. imula, E. parryi var. latior, E. parryi var. monocephala, E. parryi var. montana, E. parryi var. nevadensis, E. parryi var. parryi, E. parryi var. salmonensis, E. parryi var. vulcanica
E. parryi var. affinis, E. parryi var. aspera, E. parryi var. attenuata, E. parryi var. howardii, E. parryi var. imula, E. parryi var. latior, E. parryi var. montana, E. parryi var. nevadensis, E. parryi var. parryi, E. parryi var. salmonensis, E. parryi var. vulcanica
Synonyms Linosyris howardii, Chrysothamnus parryi subsp. howardii Chrysothamnus monocephalus, Chrysothamnus parryi subsp. monocephalus
Name authority (Parry ex A. Gray) G. L. Nesom & G. I. Baird: Phytologia 75: 88. (1993) (A. Nelson & P. B. Kennedy) G. L. Nesom & G. I. Baird: Phytologia 75: 89. (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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