Arnica angustifolia is an Arctic and alpine species of plants in the sunflower family, known by the common names narrowleaf arnica and Arctic arnica. It is native to colder regions in Europe, Asia, and North America (northern and western Canada, Alaska, northern Rocky Mountains). It is a perennial herb growing up to 16 inches (41 centimetres) tall. Its native habitats include bare, rocky slopes and alpine summits.

Subspecies

• Arnica angustifolia subsp. alpina (L.) I.K.Ferguson - Norway, Sweden
• Arnica angustifolia subsp. angustifolia - Eurasia, North America
• Arnica angustifolia subsp. attenuata (Greene) G.W.Douglas & Ruyle-Dougl. - Alaska, Yukon, Northwest Territories, Nunavut, Ungava
• Arnica angustifolia subsp. iljinii (Maguire) I.K.Ferguson - Russia
• Arnica angustifolia subsp. lonchophylla (Greene) G.W.Douglas & Ruyle-Dougl. - British Columbia
• Arnica angustifolia subsp. sornborgeri (Fernald) - Quebec, Labrador, Newfoundland
• Arnica angustifolia subsp. tomentosa (J.M.Macoun) G.W.Douglas & Ruyle-Dougl. - Canadian Rockies, Montana, Quebec, Newfoundland

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