Arnica chamissonis


Linnaea 6: 238. 1831.

Common names: Chamisso arnica leafy arnica arnica de Chamisso
Synonyms: Arnica bernardina Greene Arnica chamissonis var. bernardina (Greene) Jepson ex Maguire Arnica chamissonis subsp. foliosa (Nuttall) Maguire Arnica chamissonis var. foliosa (Nuttall) Maguire Arnica chamissonis subsp. incana (A. Gray) Maguire Arnica chamissonis var. incana (A. Gray) Hultén Arnica chamissonis var. interior Maguire Arnica chamissonis var. jepsoniana Maguire Arnica foliosa
Treatment appears in FNA Volume 21. Treatment on page 372. Mentioned on page 368.

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: Flowering Apr–Sep.
Habitat: Moist meadows and conifer forests, stream banks, late snow-melt areas, often montane to subalpine
Elevation: 0–3500 m



Alta., B.C., Man., N.W.T., Ont., Que., Sask., Yukon, Alaska, Ariz., Calif., Colo., Idaho, Mont., Nev., N.Mex., Oreg., Utah, Wash., Wyo.


Selected References


Lower Taxa

... more about "Arnica chamissonis"
Steven J. Wolf +
Lessing +
Chamisso arnica +, leafy arnica +  and arnica de Chamisso +
Alta. +, B.C. +, Man. +, N.W.T. +, Ont. +, Que. +, Sask. +, Yukon +, Alaska +, Ariz. +, Calif. +, Colo. +, Idaho +, Mont. +, Nev. +, N.Mex. +, Oreg. +, Utah +, Wash. +  and Wyo. +
0–3500 m +
Moist meadows and conifer forests, stream banks, late snow-melt areas, often montane to subalpine +
Flowering Apr–Sep. +
Arnica bernardina +, Arnica chamissonis var. bernardina +, Arnica chamissonis subsp. foliosa +, Arnica chamissonis var. foliosa +, Arnica chamissonis subsp. incana +, Arnica chamissonis var. incana +, Arnica chamissonis var. interior +, Arnica chamissonis var. jepsoniana +  and Arnica foliosa +
Arnica chamissonis +
species +