Flora of North America species comparison

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Ericameria parryi var. parryi

Ericameria parryi var. vulcanica
Photo is of parent taxon

Parry's rabbitbrush
Photo is of parent taxon

Parry's rabbitbrush, vulcan rabbitbrush
Habit Plants 30–100 cm. Plants 10–20 cm (branches slender).
Leaves

usually crowded, green;

blades 3-nerved (only midnerves prominent), linear, 30–80 × 2–3 mm, faces glabrous or puberulent, often minutely stipitate-glandular, ± resinous;

distalmost overtopping arrays.

moderately crowded, green;

blades 1(–3)-nerved, linear, 30–50 × 0.5–2 mm, faces glabrous, minutely gland-dotted;

distalmost about equaling arrays.
Involucres

9–12 mm.

12.5–15 mm.
Florets

8–20;

corollas yellow, 7.9–10 mm, tubes sparsely hairy, throats gradually dilated, lobes 1.4–2.1 mm.

5–7;

corollas yellow, 9–11 mm, tubes glabrous or proximally puberulent, throats gradually dilated, lobes 1.5–1.9 mm.
Phyllaries

10–15, mostly chartaceous, outermost sometimes herbaceous-tipped, apices erect, attenuate.

9–13, chartaceous, apices erect (tan or greenish), attenuate.
Heads

usually 5–12+ in racemiform arrays.

6–20+ in lax (much-branched), racemiform to thyrsiform arrays.
2n

= 18.

= 18.

Ericameria parryi var. parryi

Ericameria parryi var. vulcanica
Phenology Flowering late summer–fall. Flowering late summer–fall.
Habitat Open, dry hillsides and plains Sandy soils, rocky slopes and sagebrush flats
Elevation 2000–2900 m (6600–9500 ft) 1400–3200 m (4600–10500 ft)
Distribution
from FNA
CO; NM; NV; UT; WY
[BONAP county map]
from FNA
CA
[BONAP county map]
Discussion

Variety parryi is widespread in the Rocky Mountain region.

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

Variety vulcanica grows in the southern Sierra Nevada.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 20, p. 75. FNA vol. 20, p. 75.
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. monocephala, E. parryi var. montana, E. parryi var. nevadensis, 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. monocephala, E. parryi var. montana, E. parryi var. nevadensis, E. parryi var. parryi, E. parryi var. salmonensis
Synonyms Chrysothamnus vulcanicus, Chrysothamnus parryi subsp. vulcanicus
Name authority unknown (Greene) 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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