Arnica chamissonis

Lessing

Linnaea 6: 238. 1831.

Common names: Chamisso arnica leafy arnica arnica de Chamisso
Endemic
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

Distribution

V21-930-distribution-map.gif

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

Discussion

Selected References

None.

Lower Taxa

None.

... more about "Arnica chamissonis"
76 +, 57 +  and 38 +
not tailed +, rounded +  and obtuse +
connate +  and distinct +
subequal +
scarious +
usually ovate +  and lanceolate +
usually deltate +  and lanceolate +
corymbiform +  and cymiform +
indeterminate +  and determinate +
Steven J. Wolf +
Lessing +
decurrent +
compound +  and simple +
6 cm60 mm <br />0.06 m <br /> (8 cm80 mm <br />0.08 m <br />) +
5 cm50 mm <br />0.05 m <br /> (20 cm200 mm <br />0.2 m <br />) +
oblong;oblanceolate;oblong;oblanceolate;lance-elliptic +
2cm;6cm +
winged;ribbed;winged;ribbed +
tuberculate +  and rugose +
barbellate +  and subplumose +
connate +  and distinct +
Chamisso arnica +, leafy arnica +  and arnica de Chamisso +
stipitate-glandular +  and hairy +
gray +  and brown +
stipitate-glandular +, subglabrous +  and sparsely hirsutulous +
obovoid-cylindric +, fusiform +  and conic +
fertile +  and bisexual +
fertile +  and bisexual +
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 +
puberulent +  and sparsely or densely white-tomentose-pilose +
scabrellous +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
campanulate +  and cylindric +
Moist meadows and conifer forests, stream banks, late snow-melt areas, often montane to subalpine +
discoid +  and radiate +
in cymiform or corymbiform arrays +  and singly +
indeterminate +
homogamous +  and heterogamous +
each +  and sessile +
0.6 cm6 mm <br />0.006 m <br /> (2 cm20 mm <br />0.02 m <br />) +
campanulate +
4 (?) +  and 10 (?) +
deltate +
dentate to pinnatifid or palmatifid +  and entire +
remotely denticulate +  and prominently dentate +
2-carpellate +
subplumose +  and barbellate +
stramineous +
persistent +
10 +  and 50 +
aristate +
Flowering Apr–Sep. +
8 +  and 23 +
bearing subulate enations +, hairy +  and bristly +
pitted +  and smooth +
distinct +
4 +  and 20 +
exalbuminous +
appendaged +  and truncate +
hirsutulous +  and glabrous +
papillate +
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 +
campanulate +  and cylindric +
80 cm800 mm <br />0.8 m <br /> (300 cm3,000 mm <br />3 m <br />) +
1 cm10 mm <br />0.01 m <br /> (80 cm800 mm <br />0.8 m <br />) +
toothed +  and entire +
80 cm800 mm <br />0.8 m <br /> (300 cm3,000 mm <br />3 m <br />) +
5 cm50 mm <br />0.05 m <br /> (100 cm1,000 mm <br />1 m <br />) +