Compilation
Arnica amplexicaulis

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Name

Identification
Arnica amplexicaulis Nutt. [family ASTERACEAE ] (stored under name);
Related name
  • Arnica longinodosa
  • Arnica amplexifolia
  • Arnica oregana
  • Arnica multiflora
  • Arnica gracilis
  • Arnica columbiana
  • Arnica mollis
  • Arnica amplexicaulis
  • Arnica subplumosa
  • Arnica chamissonis
Common name
  • Clasping arnica, Flora of North America Vol. 21

Flora

Entry for Arnica lanceolata Nuttall subsp. prima (Maguire) Strother & S. J. Wolf [family COMPOSITAE]
Herbarium
Flora of North America (FNA)
Collection
Flora of North America
Resource Type
Reference Sources
Entry From
Flora of North America, Vol 21,
Names
Arnica lanceolata Nuttall subsp. prima (Maguire) Strother & S. J. Wolf [family COMPOSITAE], Novon, 16: 2006
Arnica amplexifolia Rydberg subsp. prima Maguire [family COMPOSITAE], Madroño, 6: 154. 1942
Arnica amplexicaulis Nuttall [family COMPOSITAE]
Arnica amplexicaulis var. piperi H. St. John & F. A. Warren [family COMPOSITAE]
Arnica amplexicaulis subsp. prima (Maguire) Maguire [family COMPOSITAE]
Arnica amplexicaulis var. prima (Maguire) B. Boivin [family COMPOSITAE]
Treatment Author(s)
Steven J. Wolf
Information
Leaves: basal commonly withered by flowering, sessile or subsessile to petiolate, blades usually oblong to narrowly lanceolate or oblanceolate, rarely ovate, margins subentire to prominently dentate-serrate; cauline sessile (bases sometimes partly connate-sheathing), blades narrowly to broadly lance-elliptic or ovate, margins subentire to serrate-dentate, faces sparsely to densely pilose. Phyllaries narrowly lanceolate. 2n = 38, 57, 76.
Phenology
may (spring), jun-aug (summer), sep (fall)
Altitude range
0–3000 m;
Distribution
USA AlaskaUSA Calif.USA IdahoUSA Mont.USA Nev.USA Oreg.USA UtahUSA Wash.USA Wyo.Canada Alta.Canada B.C.Canada N.W.T.Canada Yukon
Discussion
The name Arnica amplexifolia Rydberg (1900c) was a superfluous (illegitimate) substitution for A. amplexicaulis Nuttall (1841).

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