| - Arnica fulgens, Foothill arnica
- Arnica gaspensis
- Arnica gracilis, Smallhead arnica
- Arnica griscomii
- 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
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