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Montana Field Guide

Montana Field Guides

Hairy Arnica - Arnica mollis

Native Species

Global Rank: G5
State Rank: S4

Agency Status
MNPS Threat Rank:
C-value: 6

External Links

General Description
Stems solitary or clustered, erect, 15–60 cm. Herbage glandular, puberulent to villous. Leaves: basal petiolate, sometimes on separate shoots; blades oblong to elliptic, denticulate, 3–12 cm long; cauline 3 to 4 pairs, sessile above. Heads 1 to 3; involucre hemispheric, 1–2 cm high, glandular-pubescent. Rays 12 to 18; ligules 1–2 cm long. Pappus subplumose, tawny. Achenes glandular-pubescent, 4–8 mm long (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Species Range
Montana Range


Range Comments
AK to CA, NV, UT and CO (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Observations in Montana Natural Heritage Program Database
Number of Observations: 149

(Click on the following maps and charts to see full sized version) Map Help and Descriptions
Relative Density



(Observations spanning multiple months or years are excluded from time charts)

Moist to wet meadows, open forest, often along streams; subalpine, rarely lower (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

  • Additional ReferencesLegend:   View Online Publication
    Do you know of a citation we're missing?
    • Fultz, J.E. 2005. Effects of shelterwood management on flower-visiting insects and their floral resources. M.Sc. Thesis. Bozeman, MT: Montana State University. 163 p.
    • Joslin, G.J. 1975. Behavior and environmental selection by Elk (Cervus canadensis nelsoni) during surrmer and fall in the First and Second Yellow Mule drainages, Madison County, Montana. M.Sc. Thesis. Bozeman, Montana: Montana State University, Bozeman. 65 p.
    • Lesica, P., M.T. Lavin, and P.F. Stickney. 2012. Manual of Montana Vascular Plants. Fort Worth, TX: BRIT Press. viii + 771 p.
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Citation for data on this website:
Hairy Arnica — Arnica mollis.  Montana Field Guide.  .  Retrieved on , from