Arnica gracilisRydb.

smallhead arnica

WFO wfo-0000032766 Accepted WFO 2026-06 8 photographs CC0 / CC BY

Plate 1 figs. a–h · 3 observations

This species has been photographed under an open licence only 3 times, so some figures below are different views of the same plant, taken on the same day, rather than different individuals. They are usually different parts of it: the leaf, the flower, the bark.

Arnica gracilis, photographed by Mike Duran
fig. a Mike Duran, CC BY 4.0 / 2003-08-04 / obs. 55606549
Arnica gracilis, photographed by Spencer Quayle
fig. b Spencer Quayle, CC0 1.0 / obs. 145639233
Arnica gracilis, photographed by Caleb Catto
fig. c Caleb Catto, CC BY 4.0 / obs. 144098208
Arnica gracilis, photographed by Spencer Quayle
fig. d Spencer Quayle, CC0 1.0 / obs. 145639264
Arnica gracilis, photographed by Caleb Catto
fig. e Caleb Catto, CC BY 4.0 / obs. 144098279
Arnica gracilis, photographed by Spencer Quayle
fig. f Spencer Quayle, CC0 1.0 / obs. 145639308
Arnica gracilis, photographed by Caleb Catto
fig. g Caleb Catto, CC BY 4.0 / obs. 144098419
Arnica gracilis, photographed by Caleb Catto
fig. h Caleb Catto, CC BY 4.0 / obs. 144098508

Every figure is a research-grade observation under CC0, CC BY or CC BY-SA, rehosted with the photographer’s name, the licence and the observation it came from. Photographs under a NonCommercial licence are excluded from this site and are never stored, which costs us a great many pictures and is not negotiable.

Native range 8 botanical countries

Regions where Arnica gracilis is native: Alberta, British Columbia, Idaho, Montana, Oregon, Utah, Washington, Wyoming AlbertaBritish ColumbiaIdahoMontanaOregonUtahWashingtonWyoming
Native distribution of Arnica gracilis, after Kew’s World Checklist of Vascular Plants. Introduced, extinct and doubtful records are excluded, so this is where the plant is from, not everywhere it now grows.
RegionTDWG codeContinent
Alberta ABT NORTHERN AMERICA
British Columbia BRC
Idaho IDA
Montana MNT
Oregon ORE
Utah UTA
Washington WAS
Wyoming WYO

Region boundaries approximated from Natural Earth (public domain) and mapped to TDWG World Geographical Scheme for Recording Plant Distributions (WGSRPD) level-3 botanical countries (Brummitt 2001). Indicative, not the official WGSRPD geometry.

Also published as 6 synonyms

A synonym is not an error. It is a record of botanists disagreeing, in print, about where this plant belongs. Each of these was somebody’s considered answer.

  • Arnica arcana A.Nelson
  • Arnica columbiana A.Nelson
  • Arnica jonesii Rydb.
  • Arnica lactucina Greene
  • Arnica latifolia var. gracilis (Rydb.) Cronquist
  • Arnica multiflora Greene

Sourcesevery claim on this page

  1. World Flora Online Plant List. accepted name, authority, classification. CC0. Retrieved 2026-07-12.
  2. iNaturalist. photographs and flowering annotations, CC0 / CC BY / CC BY-SA only. per photograph. Retrieved 2026-06-27.
  3. Wikidata. common name (P1843), joined on the World Flora Online identifier (P7715). CC0. Retrieved 2026-07-13.
  4. Kew, World Checklist of Vascular Plants (WCVP v16). native distribution by TDWG level-3 botanical country, and life form. CC BY 3.0. Retrieved 2026-06-04.

We publish what we can source and we say so when we cannot. This page has no care advice and no toxicity claim, because we do not yet have those from a source we can cite.