Arnica lessingii
PlantsFamily: Asteraceae · Genus: Arnica

NPS / Jacob W. Frank: Denali National Park and Preserve · public_domain
About
Arnica lessingii is a Russian and North American species of arnica in the sunflower family. The common name is nodding arnica. It is found on both sides of the Bering Strait, being native to Alaska, Yukon, British Columbia, Northwest Territories, and the Kamchatka Peninsula of the Pacific Coast of Russia.
Summary from Wikipedia
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Growing details and traits for Arnica lessingii in the Library.
No cultivars in the Library yet — the full profile above covers the species itself.