Arnica lanceolata

Arnica lanceolata
A. lanceolata subsp. prima
California
Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Eudicots
(unranked): Asterids
Order: Asterales
Family: Asteraceae
Tribe: Heliantheae
Genus: Arnica
Species: A. lanceolata
Binomial name
Arnica lanceolata
Synonyms[1][2]
  • Arnica mollis var. petiolaris Fernald
  • Arnica petiolaris (Fernald) Rydb.
  • Arnica amplexicaulis Nutt., syn of subsp. prima
  • Arnica amplexifolia Rydb., syn of subsp. prima

Arnica lanceolata is a North American species of arnica in the sunflower family, known by the common name clasping arnica[2] or lanceleaf arnica.[3] It has a disjunct (discontinuous) distribution in western North America and northeastern North America.[4][5]

Arnica lanceolata is a perennial herb usually growing from a small rhizome and producing one or more hairy, glandular stems. The stems are lined with 5 to 10 pairs of oval-shaped, toothed leaves up to 12 centimeters long. The inflorescence is a cluster of several daisy-like flower heads with a center of brownish disc florets and a fringe of yellow ray florets 1 to 2 centimeters long. The fruit is a cylindrical achene covered in hairs and with a light brown pappus at one end.[2]

Subspecies[1][2]

References

  1. 1 2 The Plant List Arnica lanceolata Nutt.
  2. 1 2 3 4 Flora of North America, Clasping arnica, Arnica lanceolata
  3. ↑ "Arnica lanceolata". Natural Resources Conservation Service PLANTS Database. USDA. Retrieved 26 May 2015.
  4. ↑ Biota of North America Program 2014 state-level distribution map
  5. ↑ Calflora taxon report, University of California, Arnica lanceolata Nutt. ssp. prima (Maguire) Strother & S.J. Wolf Clasping arnica


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