Flora of North America species comparison

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Ericameria parryi var. monocephala

Ericameria parryi var. imula
Photo is of parent taxon

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

low rabbitbrush, Parry's rabbitbrush
Habit Plants 5–40 cm (rigid). Plants 10–20 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.

crowded, gray;

blades 1-nerved, spatulate to linear-spatulate, 10–15 × 2–3 mm, faces densely tomentose, eglandular;

distalmost not overtopping arrays.
Involucres

10–11 mm.

10–12 mm.
Florets

5–7;

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

10–18;

corollas 10–12 mm, tubes glabrous or sparsely villous, throats ± abruptly dilated, lobes 1.4–1.5 mm.
Phyllaries

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

ca. 16, chartaceous, apices erect (outer sometimes herbaceous, reddish), abruptly acute.
Heads

1–2(–4) at branch tips.

usually 3–5 in ± racemiform arrays.
2n

= 18.

= 18.

Ericameria parryi var. monocephala

Ericameria parryi var. imula
Phenology Flowering late summer–fall. Flowering late summer–fall.
Habitat Open subalpine forests, talus, and alpine barrens Dry flats and yellow-pine forests
Elevation 2800–3700 m (9200–12100 ft) 2000–2200 m (6600–7200 ft)
Distribution
from FNA
CA; NV
[BONAP county map]
from FNA
CA
[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.)

Variety imula is known only from southern San Bernardino County.

(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. aspera, E. parryi var. attenuata, E. parryi var. howardii, 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 parryi subsp. imulus
Name authority (A. Nelson & P. B. Kennedy) G. L. Nesom & G. I. Baird: Phytologia 75: 89. (1993) (H. M. Hall & Clements) 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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