''Arnica louiseana'' is a
Canadian species of
flowering plant in the family
Asteraceae, known by the common name Lake Louise arnica or snow arnica.
[Flora of North America, Lake Louise arnica, snow arnica, ''Arnica louiseana'']
/ref>Biota of North America Program 2014 state-level distribution map
/ref> It is native to the Canadian Rockies
The Canadian Rockies (french: Rocheuses canadiennes) or Canadian Rocky Mountains, comprising both the Alberta Rockies and the British Columbian Rockies, is the Canadian segment of the North American Rocky Mountains. It is the easternmost part ...
in Alberta and British Columbia, and named for Lake Louise in Banff National Park
Banff National Park is Canada's oldest National Parks of Canada, national park, established in 1885 as Rocky Mountains Park. Located in Alberta's Rockies, Alberta's Rocky Mountains, west of Calgary, Banff encompasses of mountainous terrain, wi ...
.[
''Arnica louiseana'' is a small plant rarely more than 20 cm (8 inches) tall. ]Flower heads
A pseudanthium (Greek for "false flower"; ) is an inflorescence that resembles a flower. The word is sometimes used for other structures that are neither a true flower nor a true inflorescence. Examples of pseudanthia include flower heads, compos ...
are yellow, with both ray florets and disc florets. It grows at high elevations in alpine tundra
Alpine tundra is a type of natural region or biome that does not contain trees because it is at high elevation, with an associated alpine climate, harsh climate. As the latitude of a location approaches the poles, the threshold elevation for alp ...
and rocky outcrops.[Farr, Edith May 1906. Ottawa Naturalist 20(5): 109]
/ref>
References
louiseana
Flora of Western Canada
Plants described in 1906
Endemic flora of Canada
Flora without expected TNC conservation status
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