dcsimg

Description

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Plants 5–20 cm. Stems simple. Leaves 1–3 pairs, mostly cauline (shorter plants often with leaves crowed mostly toward bases); petiolate; blades elliptic, oblong, or ovate-lanceolate, 1.5–7.5 × 0.5–2 cm, margins usually entire, rarely denticulate or slightly undulate, apices usually obtuse, sometimes acute or acuminate, faces glabrous or hispidulous-puberulent, ± densely stipitate-glandular. Heads usually 1, sometimes 2–3 (nodding at flowering). Involucres campanulate-turbinate. Phyllaries 10–20, narrowly lanceolate (stipitate-glandular). Ray florets 7–10; corollas yellow. Disc florets: corollas yellow; anthers yellow. Cypselae brown, 3–5 mm, abaxially glabrous, adaxially sparsely hirsute or glabrous throughout, usually stipitate-glandular toward apices, sometimes densely stipitate-glandular throughout; pappi white, bristles barbellate. 2n = 76, 95.
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Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of North America Vol. 21: 368, 371 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
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Flora of North America @ eFloras.org
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Flora of North America Editorial Committee
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Arnica louiseana

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Arnica louiseana is a Canadian species of arnica in the sunflower family, known by the common name Lake Louise arnica or snow arnica.[1][2] It is native to the Canadian Rockies in Alberta and British Columbia, and named for Lake Louise in Banff National Park.[3]

Arnica louiseana is a small plant rarely more than 20 cm (8 inches) tall. Flower heads are yellow, with both ray florets and disc florets. It grows at high elevations in alpine tundra and rocky outcrops.[1][3]

References

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Arnica louiseana: Brief Summary

provided by wikipedia EN

Arnica louiseana is a Canadian species of arnica in the sunflower family, known by the common name Lake Louise arnica or snow arnica. It is native to the Canadian Rockies in Alberta and British Columbia, and named for Lake Louise in Banff National Park.

Arnica louiseana is a small plant rarely more than 20 cm (8 inches) tall. Flower heads are yellow, with both ray florets and disc florets. It grows at high elevations in alpine tundra and rocky outcrops.

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Wikipedia authors and editors
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visit source
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wikipedia EN