Ericameria parryi var. vulcanica

(Greene) G. L. Nesom & G. I. Baird

Phytologia 75: 89. 1993.

Common names: Vulcan rabbitbrush
Endemic
Basionym: Chrysothamnus vulcanicus Greene Leafl. Bot. Observ. Crit. 1: 80. 1904
Synonyms: Chrysothamnus parryi subsp. vulcanicus (Greene) H. M. Hall & Clements
Treatment appears in FNA Volume 20. Treatment on page 75. Mentioned on page 72.

Plants 10–20 cm (branches slender). Leaves moderately crowded, green; blades 1(–3)-nerved, linear, 30–50 × 0.5–2 mm, faces glabrous, minutely gland-dotted; distalmost about equaling arrays. Heads 6–20+ in lax (much-branched), racemiform to thyrsiform arrays. Involucres 12.5–15 mm. Phyllaries 9–13, chartaceous, apices erect (tan or greenish), attenuate. Florets 5–7; corollas yellow, 9–11 mm, tubes glabrous or proximally puberulent, throats gradually dilated, lobes 1.5–1.9 mm. 2n = 18.


Phenology: Flowering late summer–fall.
Habitat: Sandy soils, rocky slopes and sagebrush flats
Elevation: 1400–3200 m

Discussion

Variety vulcanica grows in the southern Sierra Nevada.

Selected References

None.

Lower Taxa

None.
Lowell E. Urbatsch +, Loran C. Anderson +, Roland P. Roberts +  and Kurt M. Neubig +
(Greene) G. L. Nesom & G. I. Baird +
Chrysothamnus vulcanicus +
Vulcan rabbitbrush +
1400–3200 m +
Sandy soils, rocky slopes and sagebrush flats +
Flowering late summer–fall. +
Chrysothamnus parryi subsp. vulcanicus +
Ericameria parryi var. vulcanica +
Ericameria parryi +
variety +