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Montana Field Guide

Montana Field Guides

Clasping Arnica - Arnica amplexicaulis
Other Names:  Arnica lanceolata ssp. prima


Global Rank: G5
State Rank: S4

Agency Status
USFWS:
USFS:
BLM:
MNPS Threat Rank:
C-value: 5

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General Description
Stems solitary or clustered, erect, 20–80 cm. Herbage puberulent to villous. Leaves mostly cauline, sessile, 4 to 7 pairs, dentate, lanceolate to elliptic, 5–15 cm long. Heads 3 to 10; involucre campanulate, 8–15 mm high, glandular, septate-villous. Rays 8 to 14; ligules 1–2 cm long. Pappus subplumose, brownish. Achenes glabrous, 4–8 mm long (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

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

Habitat
Moist forest, woodlands, often along streams; montane (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

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