- Arnica amplexicaulis, Clasping arnica
- Arnica angustifolia, Arctic Arnica;Narrowleaf arnica
- Arnica cernua, Serpentine arnica
- Arnica chamissonis, Chamisso arnica
- Arnica cordifolia, Heartleaf arnica
- Arnica discoidea, Rayless arnica
- Arnica frigida, Snow arnica
- Arnica fulgens, Foothill arnica
- Arnica gracilis, Smallhead arnica
- Arnica lanceolata, Lanceleaf arnica
- Arnica latifolia, Broadleaf arnica
- Arnica lessingii, Nodding arnica
- Arnica lonchophylla, Longleaf arnica
| - Arnica longifolia, Spearleaf arnica
- Arnica louiseana, Lake Louise arnica
- Arnica mollis, Hairy arnica
- Arnica nevadensis, Nevada arnica
- Arnica parryi, Parrys arnica
- Arnica rydbergii, Rydbergs arnica
- Arnica sororia, Twin arnica
- Arnica spathulata, Klamath arnica
- Arnica unalaschcensis, Alaska arnica
- Arnica venosa, Shasta County arnica
- Arnica viscosa, Mt Shasta arnica
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