Compilation
Arnica foliosa

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Name

Identification
Arnica foliosa Nutt. [family ASTERACEAE ] Arnica chamissonis (Nutt.) Maguire [family ASTERACEAE ] (stored under name);
Related name
  • Arnica stricta
  • Arnica longinodosa
  • Arnica foliosa
  • Arnica bernardina
  • Arnica sp.
  • Arnica rhizomata
  • Arnica fulgens
  • Arnica mollis
  • Arnica ocreata
  • Arnica chamissonis
Common name
  • Chamisso arnica, Flora of North America Vol. 21
  • leafy arnica, Flora of North America Vol. 21
  • arnica de Chamisso, Flora of North America Vol. 21

Flora

Entry for Arnica chamissonis Lessing [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 chamissonis Lessing [family COMPOSITAE], Linnaea, 6: 238. 1831
Arnica bernardina Greene [family COMPOSITAE]
Arnica chamissonis var. bernardina (Greene) Jepson ex Maguire [family COMPOSITAE]
Arnica chamissonis subsp. foliosa (Nuttall) Maguire [family COMPOSITAE]
Arnica chamissonis var. foliosa (Nuttall) Maguire [family COMPOSITAE]
Arnica chamissonis subsp. incana (A. Gray) Maguire [family COMPOSITAE]
Arnica chamissonis var. incana (A. Gray) Hultén [family COMPOSITAE]
Arnica chamissonis var. interior Maguire [family COMPOSITAE]
Arnica chamissonis var. jepsoniana Maguire [family COMPOSITAE]
Arnica foliosa Nuttall [family COMPOSITAE]
Treatment Author(s)
Steven J. Wolf
Information
Plants 20–80(–150) cm. Stems usually branched from mid heights or distally. Leaves 4–10 pairs, mostly cauline (evenly distributed; basal leaves often withered by flowering, 1–2 pairs, subsessile to short-petiolate); sessile (proximalmost with membranous connate-sheathing bases); blades lance-elliptic, broadly oblanceolate, or oblong, 5–20 × 2–6(–8) cm, margins entire or remotely denticulate to prominently dentate, apices acute, faces nearly glabrous or puberulent to sparsely or densely white-tomentose-pilose. Heads (1–)3–10(–16). Involucres campanulate (rarely hemispheric). Phyllaries 8–23, nearly linear to narrowly lanceolate (apices each with conspicuous tuft of white hairs). Ray florets 8–20; corollas yellow. Disc florets: corollas yellow; anthers yellow. Cypselae gray to brown, 3–8 mm, subglabrous to sparsely hirsutulous, stipitate-glandular; pappi stramineous, bristles barbellate to subplumose. 2n = 38, 57, 76.
Phenology
apr-may (spring), jun-aug (summer), sep (fall)
Altitude range
0–3500 m;
Distribution
USA AlaskaUSA Ariz.USA Calif.USA Colo.USA IdahoUSA Mont.USA Nev.USA N.Mex.USA Oreg.USA UtahUSA Wash.USA Wyo.Canada Alta.Canada B.C.Canada Man.Canada N.W.T.Canada Ont.Canada Que.Canada Sask.Canada Yukon

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