Species

Arnica discoidea (Rayless arnica)

Arnica discoidea. Photo: (c) Julie, some rights reserved (CC BY-NC)

iNaturalist • Wikipedia

Arnica discoidea is a North American species of arnica in the sunflower family. It is known by the common name rayless arnica because its flower heads have disc florets but none of the showier ray florets. It is native to the woodlands, forests, and chaparral of the western United States (Washington, Oregon, California, and western Nevada (Washoe County).

Humboldt Life
- Kingdom: Plantae (Plants)
  - Phylum: Tracheophyta (Vascular plants)
    - Subphylum: Angiospermae (Flowering plants)
      - Class: Magnoliopsida (Dicots)
        Order: Asterales (Sunflowers, bellflowers, fanflowers, and allies)
        Family: Asteraceae (Sunflowers, daisies, asters, and allies)
        Subfamily: Asteroideae
        Tribe: Madieae (Tarweeds and allies)
        Genus: Arnica
        Species: Arnica discoidea (Rayless arnica)

Sightings

Where in Humboldt

Discussion

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