Arnica latifolia

Arnica latifolia
Wenatchee National Forest, Washington
Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Eudicots
(unranked): Asterids
Order: Asterales
Family: Asteraceae
Tribe: Heliantheae
Genus: Arnica
Species: A. latifolia
Binomial name
Arnica latifolia
Bong.
Synonyms[1]

Arnica latifolia is a species of arnica in the sunflower family, known by the common names Broadleaf Arnica, Broad Leaved Arnica, Mountain Arnica, and Daffodil Leopardbane.[2] It is native to western North America from Alaska east to Northwest Territories and south to Mono County, California and Taos County, New Mexico.[3][4] It grows in mountain habitat such as forest and meadows.

Arnica latifolia is a perennial herb growing from a long rhizome and producing a hairy, mostly naked stem 10 to 50 centimeters tall. It has a cluster of leaves around its base and usually a few pairs along the lower part of the stem. The leaves are lance-shaped to broad and nearly heart-shaped, and are usually toothed. [5]

The inflorescence contains one or more daisy-like flower heads lined in glandular phyllaries. Each has a center of yellow disc florets and several yellow ray florets up to 3 centimeters long. The fruit is an achene with a white pappus.[5]

The plant was first described in 1832 by German-Russian botanist August Gustav Heinrich von Bongard 1786 – 1839, based on material collected near Sitka, now in Alaska (then called Russian America).[6][7][8]

References

  1. ↑ The Plant List Arnica latifolia Bong.
  2. ↑ Calflora taxon report, University of California, Arnica latifolia Bong.,broadleaf arnica, mountain arnica
  3. ↑ Biota of North America Program 2014 state-level distribution map
  4. ↑ Biota of North America Program 2014 county distribution map
  5. 1 2 Flora of North America Vol. 21 Page 376 Broadleaf arnica Arnica latifolia Bongard, Mém. Acad. Imp. Sci. St.-Pétersbourg, Sér. 6, Sci. Math. 2: 147. 1832.
  6. ↑ Bongard, August Gustav Heinrich von 1832. Mémoires de l'Académie Imperiale des Sciences de St.-Pétersbourg. Sixième Série. Sciences Mathématiques, Physiques et Naturelles 2(2): 147–148, Veg. Isl. Sitch. 29.
  7. ↑ The International Plant Names Index
  8. ↑ Tropicos, Arnica latifolia Bong.
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