Safeplants

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Chamisso arnica

Scientific Name: Arnica chamissonis ssp. foliosa var. maguirei

Family: Asteraceae

Category: Dicot

Growth: Forb/herb

Duration: Perennial

Other Names:

Arnica chamissonis, commonly known as Chamisso arnica, is a perennial, herbaceous plant belonging to the sunflower family (Asteraceae).

The text mentions the presence of herbage on stems and leaves, which might be a consideration for pets that graze on plants.
Arnica chamissonis is closely related to Arnica montana which is known as a medicinal plant; any exposure warrants caution.

Scientific Name: Arnica chamissonis Less.
Common Names: Chamisso arnica, meadow arnica, leafy leopardbane, arnica de Chamisso, American arnica, North American arnica.
Family: Asteraceae (Aster or Sunflower family)
Synonyms:
- Arnica bernardina Greene
- A. chamissonis var. bernardina (Greene) Jepson ex Maguire
Subspecies:
- Arnica chamissonis Less. ssp. chamissonis var. interior Maguire
- Arnica chamissonis Less. ssp. foliosa (Nutt.) Maguire
- Arnica chamissonis Less. ssp. foliosa Nutt.
- Arnica chamissonis ssp. foliosa var. bernardina (Greene) Maguire

Arnica chamissonis is native to California and is found elsewhere in North America.
It grows along meadows and creeks in the Southern California Mountains, through the Sierras to Alaska, and across to other parts of the USA west of the Rockies.
It is also found in Switzerland, altitude ca.

Arnica chamissonis is a perennial wildflower with single stems arising 20-100 cm high from long, nearly naked rhizomes.
It is a single-stemmed perennial from 8-24 inches tall with 5-10 pairs of heart-shaped lower leaves.
The herbage (stems and leaves) has hair.
The plant produces yellow flower heads in summer.

Arnica chamissonis is very similar to Arnica montana, but A. chamissonis is found in North America, while A. montana is found in Europe.