Smallhead Arnica - Arnica latifolia var. gracilis
MNPS Threat Rank
Stems often in dense clumps and branching above, 10–30 cm. Leaf pairs 2–3, mostly cauline, the uppermost pair often reduced; blades ovate to ovate-lanceolate, margins irregularly serrate, apex acute; lower surface glandular, upper surface stipitate-glandular. Heads rarely only one but mostly 5 to 15. Involucres turbinate-campanulate. Phyllaries 10–16, ovate-lanceolate. Flowers yellow; rays 5–12. Achenes 4.5-7 mm long, black, hairy (hairs duplex) and stipitate-glandular. Pappus barbellate, bristles white (adapted from Wolf, 2006, Fl. N. America, Vol. 21).
July and August.
BC and AB south to OR, UT, and CO (Kartesz 2009).
Observations in Montana Natural Heritage Program Database
Number of Observations:
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Map Help and Descriptions
(Observations spanning multiple months or years are excluded from time charts)
Dry, exposed, rocky, alpine slopes, sometimes subalpine meadows; 1200–2500 m (Wolf, 2005, in Fl. North America, Vol. 21).
- Additional ReferencesLegend: View Online Publication
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- Lesica, P., M. T. Lavin, and P. F. Stickney. 2012. Manual of Montana Vascular Plants. Fort Worth, TX: BRIT Press. viii + 771 p.