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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
Wenatchee National Forest, Washington
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Asterales
Family: Asteraceae
Genus: Arnica
Species:
A. latifolia
Binomial name
Arnica latifolia
Bong.
Synonyms[1]
Synonymy
  • Arnica aphanactis Piper
  • Arnica aprica Greene
  • Arnica betonicifolia Greene
  • Arnica eriopoda Gand.
  • Arnica flodmanii Rydb.
  • Arnica glabrata Rydb.
  • Arnica grandifolia Greene
  • Arnica granulifera Rydb.
  • Arnica intermedia Howell ex Rydb.
  • Arnica laevigata Greene
  • Arnica leptocaulis Rydb.
  • Arnica membranacea Rydb.
  • Arnica menziesii Hook.
  • Arnica oligolepis Rydb.
  • Arnica paucibracteata Rydb.
  • Arnica platyphylla A.Nelson
  • Arnica puberula Rydb.
  • Arnica teucriifolia Greene
  • Arnica ventorum Greene

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 Gustav Heinrich von Bongard, based on material collected near Sitka, now in Alaska (then called Russian America).[6][7][8]

The species could be confused with the similar Arnica cordifolia, from which it can be distinguished by the leaves.[9]


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. 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.
  9. Reiner, Ralph E. (1969). Introducing the Flowering Beauty of Glacier National Park and the Majestic High Rockies. Glacier Park, Inc. p. 44.



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