Flora of North America species comparison

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Ericameria parryi var. monocephala

Ericameria parryi var. aspera
Photo is of parent taxon

one-head rabbitbrush, Parry's rabbitbrush
Photo is of parent taxon

rough Parry's rabbitbrush, rough rabbitbrush
Habit Plants 5–40 cm (rigid). Plants 15–70 cm.
Leaves

crowded, grayish;

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

distalmost overtopping arrays.

moderately crowded, gray-green;

blades 1-nerved, oblanceolate, 15–50 × 1–3 mm, faces abundantly stipitate-glandular;

distalmost ± equaling arrays.
Involucres

10–11 mm.

11–15 mm.
Florets

5–7;

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

5–10;

corollas yellow, 8.3–9.5 mm, tubes sparsely hairy, throats gradually dilated, lobes 1.4–1.7 mm.
Phyllaries

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

9–13, whitish, tan, or purplish, apices erect to spreading, acute.
Heads

1–2(–4) at branch tips.

4–10+ in (sometimes branched) racemiform arrays.
2n

= 18.

= 18.

Ericameria parryi var. monocephala

Ericameria parryi var. aspera
Phenology Flowering late summer–fall. Flowering late summer–fall.
Habitat Open subalpine forests, talus, and alpine barrens Dry forests to alpine barrens in pumice or gravel
Elevation 2800–3700 m (9200–12100 ft) 1900–3300 m (6200–10800 ft)
Distribution
from FNA
CA; NV
[BONAP county map]
from FNA
CA; NV
[BONAP county map]
Discussion

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. 74. FNA vol. 20, p. 73.
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. 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
E. parryi var. affinis, E. parryi var. attenuata, E. parryi var. howardii, 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
Synonyms Chrysothamnus monocephalus, Chrysothamnus parryi subsp. monocephalus Chrysothamnus asper, Chrysothamnus parryi subsp. asper
Name authority (A. Nelson & P. B. Kennedy) G. L. Nesom & G. I. Baird: Phytologia 75: 89. (1993) (Greene) G. L. Nesom & G. I. Baird: Phytologia 75: 88. (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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