Asteraceae

Spearleaf arnica

Arnica longifolia D.C.Eaton

Family: Asteraceae
Genus: Arnica

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Spearleaf arnica: Species : Arnica longifolia Family : Asteraceae Image No. 2 — Photo: Kurt Stüber [1], CC BY-SA 3.0, from Wikimedia Commons

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Common names

By language (1)

English: Spearleaf arnica

Synonyms

Arnica caudata Rydb.
Arnica longifolia subsp. genuina Maguire
Arnica longifolia subsp. longifolia
Arnica longifolia subsp. myriadenia (Piper) Maguire
Arnica myriadenia Piper
Arnica polycephala A.Nelson

Flowers

Flower colour: yellow (USDA PLANTS Database)

Characteristics

Growth habit: Forb/herb
Lifespan: Perennial
In the US and Canada: Canada: native, Lower 48 states: native

Photos

Photo: Kurt Stüber [1], CC BY-SA 3.0, from Wikimedia Commons
Photo: Matt Lavin from Bozeman, Montana, USA, CC BY-SA 2.0, from Wikimedia Commons
Photo: Matt Lavin from Bozeman, Montana, USA, CC BY-SA 2.0, from Wikimedia Commons
Photo: Matt Lavin from Bozeman, Montana, USA, CC BY-SA 2.0, from Wikimedia Commons
Photo: Matt Lavin from Bozeman, Montana, USA, CC BY-SA 2.0, from Wikimedia Commons
Photo: Matt Lavin from Bozeman, Montana, USA, CC BY-SA 2.0, from Wikimedia Commons
Photo: Matt Lavin from Bozeman, Montana, USA, CC BY-SA 2.0, from Wikimedia Commons
Photo: Matt Lavin from Bozeman, Montana, USA, CC BY-SA 2.0, from Wikimedia Commons
Photo: Matt Lavin from Bozeman, Montana, USA, CC BY-SA 2.0, from Wikimedia Commons
Photo: Matt Lavin from Bozeman, Montana, USA, CC BY-SA 2.0, from Wikimedia Commons
Photo: Matt Lavin from Bozeman, Montana, USA, CC BY-SA 2.0, from Wikimedia Commons
Photo: Matt Lavin from Bozeman, Montana, USA, CC BY-SA 2.0, from Wikimedia Commons

More in Arnica

Sources: classification, synonyms from World Flora Online Plant List (2026-06, CC0 1.0); common names, popularity from Wikidata (2026-10-26, CC0 1.0); common names, US characteristics from USDA PLANTS Database (2025-05-29, CC0 1.0). About our plant data.