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Montana Field Guide

Montana Field Guides

Mountain Arnica - Arnica latifolia


Global Rank: G5
State Rank: S5

Agency Status
USFWS:
USFS:
BLM:
MNPS Threat Rank:
C-value: 4

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General Description
Stems mostly solitary, ascending to erect, 8–60 cm. Herbage glabrate to weakly tomentose, sometimes glandular-pubescent. Leaves: basal long-petiolate on separate shoots; blades lanceolate to sagittate, dentate, 2–12 cm long; cauline 2 to 4 pairs, lanceolate to ovate, denticulate, sessile to short-petiolate. Heads 1 to 9; involucre turbinate, 9–18 mm high. Rays 5 to 15; ligules 15–30 mm long. Pappus short-barbed, white. Achenes 5–10 mm long, hirsute or sometimes glandular above, glabrous below (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

We have varieties latifolia and gracilis (Rydb.) Cronquist.

Species Range
Present
 


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

Summary of Observations Submitted for Montana
Number of Observations: 76

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

Recency

 

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



Habitat

References
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Citation for data on this website:
Mountain Arnica — Arnica latifolia.  Montana Field Guide.  .  Retrieved on , from