Arnica cernua

Arnica cernua
Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Eudicots
(unranked): Asterids
Order: Asterales
Family: Asteraceae
Tribe: Heliantheae
Genus: Arnica
Species: A. cernua
Binomial name
Arnica cernua
Howell
Synonyms[1]

Arnica chandleri Rydb.

Arnica cernua is a species of arnica known by the common name serpentine arnica.[2] It is native to the Klamath Mountains of northern California and southern Oregon, where it is a member of the serpentine soils flora.[3][4]

This is a perennial herb growing one or more green to purplish stems up to about 30 centimeters tall. There are 3 or 4 pairs of leaves on long petioles. The blade is oval to spade-shaped and may be several centimeters long. The inflorescence contains one or more hairy, glandular, daisylike flower heads, each with a center of yellowish disc florets and a fringe of yellow ray florets which approach 3 centimeters in maximum length. [2]

The fruit is a cylindrical achene about 7 millimeters long which is covered in stiff hairs and has a white pappus at one end.[2]

References

  1. ↑ The Plant List Arnica cernua Howell
  2. 1 2 3 Flora of North America, serpentine arnica, Arnica cernua
  3. ↑ Biota of North America Program 2014 county distribution map
  4. ↑ Calflora taxon report, University of California, Arnica cernua, Howell serpentine arnica

External links


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