Arnica gracilis

Arnica gracilis is a North American species of flowering plant in the family Asteraceae, known by the common name smallhead arnica.[2][3] 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).[4]

Arnica gracilis
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Asterales
Family: Asteraceae
Genus: Arnica
Species:
A. gracilis
Binomial name
Arnica gracilis
Synonyms[1]
  • Arnica arcana A.Nelson
  • Arnica betonicifolia var. gracilis (Rydb.) M.E.Jones
  • Arnica columbiana A.Nelson
  • Arnica jonesii Rydb.
  • Arnica lactucina Greene
  • Arnica latifolia var. gracilis (Rydb.) Cronquist
  • Arnica multiflora Greene

Arnica gracilis is an herb up to 30 cm (12 inches) tall. Flower heads are yellow, with both ray florets and disc florets.[2]

References
  1. The Plant List Arnica gracilis Rydb.
  2. Flora of North America, Smallhead arnica, Arnica gracilis
  3. Rydberg, Per Axel 1897. Bulletin of the Torrey Botanical Club 24(6): 297
  4. Biota of North America Program 2014 county distribution map


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