Arnica mollis

Arnica mollis
Arnica mollis in Henry M. Jackson Wilderness
Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Eudicots
(unranked): Asterids
Order: Asterales
Family: Asteraceae
Tribe: Heliantheae
Genus: Arnica
Species: A. mollis
Binomial name
Arnica mollis
Synonyms[1]

Arnica mollis is a North American species of arnica in the sunflower family, known by the common name soft arnica,[2]:113 or hairy arnica.[3] It is native to Canada (British Columbia, Alberta, Quebec, and all 3 Arctic territories)[4] and the United States (Alaska and the western mountains as far south as San Bernardino County, California[5] and Rio Arriba County, New Mexico. There are also isolated populations in the White Mountains of Coos County, New Hampshire.[6] The species grows in subalpine mountain habitat such as meadows and streambanks.[3]

Arnica mollis is a perennial herb producing one or more hairy, glandular, mostly naked stems 20 to 60 centimeters tall. There are 3 to 5 pairs of leaves along mainly the lower half of the stem, each oblong in shape and 4 to 20 centimeters in length.[3]

The inflorescence holds one to a few daisylike flower heads with centers of yellow disc florets and fringes of yellow ray florets. The fruit is an achene with a brownish pappus.[3]

"Mollis" means "soft", referring to the soft hairs on the leaves.[2]:113

References

  1. ↑ The Plant List Arnica mollis Hook.
  2. 1 2 Great Basin Wildflowers, Laird R. Blackwell, 2006, Morris Book Publishing LLC., ISBN 0-7627-3805-7
  3. 1 2 3 4 Flora of North America Vol. 21 Page 372 Hairy arnica Arnica mollis Hooker, Fl. Bor.-Amer. 1: 331. 1834.
  4. ↑ Biota of North America Program 2014 state-level distribution map
  5. ↑ Calflora taxon report, University of California, Arnica mollis Hook. Cordillerean Anica, cordilleran arnica, hairy arnica
  6. ↑ Biota of North America Program 2014 county distribution map

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