Arnica gracilis explained

Arnica gracilis is a North American species of flowering plant in the family Asteraceae, known by the common name smallhead arnica.^{[1] [2]} It is native to western Canada (Alberta, British Columbia) and the northwestern United States (Washington, Oregon, Idaho, Montana, Wyoming, north-central Colorado (Jackson County), and northern Utah (Cache, Summit, + Daggett Counties).^[3]

Arnica gracilis is an herb up to 30 cm (12 inches) tall. Flower heads are yellow, with both ray florets and disc florets.^[1]

External links

• Paul Slichter, The Arnicas of Mt. Adams (Washington State), Slender Arnica, Mountain Arnica Arnica gracilis
• Eastern Washington University, Flora of Eastern Washington and Adjacent Idaho

Notes and References

1. http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=250066114 Flora of North America, Smallhead arnica, Arnica gracilis
2. https://www.biodiversitylibrary.org/page/715738#page/387/mode/1up Rydberg, Per Axel 1897. Bulletin of the Torrey Botanical Club 24(6): 297
3. http://bonap.net/MapGallery/County/Arnica%20gracilis.png Biota of North America Program 2014 county distribution map