Arnica angustifolia

{{Short description|Species of flowering plant}}

{{Speciesbox

|image = Arnica angustifolia.jpg

|status = {{TNCStatus}}

|status_system = TNC

|genus = Arnica

|species = angustifolia

|authority = Vahl

|synonyms_ref = {{ThePlantList |id=gcc-110508 |taxon=Arnica angustifolia |authority=Vahl |access-date=2016-02-09}}

|synonyms = {{collapsible list|bullets = true

|title=Synonymy

|Arnica alpina (L.) Olin & Ladau 1799 not Salisb. 1796 nor Willd. ex Steud. 1821

|Arnica attenuata Greene

|Arnica plantaginea Pursh

|Arnica sornborgeri Fernald

|Arnica terrae-novae Fernald

|Doronicum plantagineum Poir. 1817, illegitimate homonym not L. 1753

|Aliseta plantaginea Raf., syn of subsp. alpina

|Arnica fennoscandica Jurtzev & Korobkov, syn of subsp. alpina

|Doronicum fulgens Poir., syn of subsp. alpina

|Arnica attenuata Greene, syn of subsp. attenuata

|Arnica iljinii (Maguire) Iljin, syn of subsp. iljinii

|Arnica alpina subsp. iljinii Maguire, syn of subsp. iljinii

|Arnica lonchophylla Greene, syn of subsp. lonchophylla

|Arnica pulchella Fernald, syn of subsp. tomentosa

|Arnica tomentosa Macoun, syn of subsp. tomentosa

|}}}}

Arnica angustifolia is an Arctic and alpine species of plants in the sunflower family, known by the common names narrowleaf arnica{{eFloras|1|250066107|Arnica angustifolia |tribe=Heliantheae |first=Steven J. |last=Wolf |access-date=2016-02-09}} and Arctic arnica.{{BSBI 2007 |accessdate=2014-10-17 }} It is native to colder regions in Europe, Asia, and North America (northern and western Canada, Alaska, northern Rocky Mountains).{{BONAP |genus=Arnica |species=angustifolia |state=1 |access-date=2016-02-09}} It is a perennial herb growing up to {{Convert|16|in|cm|abbr=off}} tall.{{Cite web |title=Lady Bird Johnson Wildflower Center - The University of Texas at Austin |url=https://www.wildflower.org/plants/result.php?id_plant=ARAN5 |access-date=2024-03-05 |website=www.wildflower.org}} Its native habitats include bare, rocky slopes and alpine summits.

; Subspecies{{cite web|url=http://nhm2.uio.no/paf/861201 |title= Panarctic Flora, 861201 Arnica angustifolia Vahl |publisher=nhm2.uio.no|accessdate=2016-02-09}}

• 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