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Arnica cordifolia

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Kingdom
  
Tribe
  
Heliantheae

Scientific name
  
Arnica cordifolia

Rank
  
Species

Order
  
Genus
  
Arnica

Higher classification
  
Arnica

Arnica cordifolia hasbrouckasueduimglibseinetAsteraceaephotos

Similar
  
Arnica, Daisy family, Arnica latifolia, Arnica sororia, Arnica fulgens

Arnica cordifolia is a species of arnica in the sunflower family, known by the common name heartleaf arnica. It is native to western North America from Alaska to California to New Mexico, as far east as Ontario and Michigan. It is a plant of many habitat types, including coniferous forests and mountain meadows.

Arnica cordifolia Arnica cordifolia Colorado Wildflowers

This is a rhizomatous perennial herb producing one or more erect stems reaching a maximum height near half a meter. It has two to four pairs of leaves on the stem, each on a long petiole. The leaves are heart-shaped to arrowhead-shaped and finely toothed along the edges. The inflorescence bears one or more daisylike flower heads lined with white-haired phyllaries and sometimes studded with resin glands. The center of each head contains golden yellow disc florets and a fringe of bright golden ray florets approaching 3 centimeters in maximum length.

Arnica cordifolia Arnica cordifolia photos Saskatchewan Wildflowers

The fruit is a hairy achene up to a centimeter long, not counting its off-white pappus. Seeds are dispersed on the wind. An individual plant can live twelve years, surviving periodic wildfire by resprouting from its long, slender rhizome afterward.

Arnica cordifolia Heartleaf Arnica Heartleaf Leopardbane Arnica cordifolia

Arnica cordifolia heart leaved arnica


Arnica cordifolia Heartleaf Arnica Heartleaf Leopardbane Arnica cordifolia

Arnica cordifolia Southwest Colorado Wildflowers Arnica

Arnica cordifolia Arnica cordifolia Heartleaf leopardbane NPIN

References

Arnica cordifolia Wikipedia