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(är`nəkə), any plant of the genus Arnica, yellow-flowered perennials of the family Asteraceae (asteraster
[Gr.,=star], common name for the Asteraceae (Compositae), the aster family, in North America, name for plants of the genus Aster, sometimes called wild asters, and for a related plant more correctly called China aster (Callistephus chinensis
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 family), native to north temperate and arctic regions. In North America, arnicas grow in woody areas of the plains region and the Pacific coast, northward to arctic Alaska. Medicinal preparations for the treatment of wounds and bruises are sometimes made from arnica plants, chiefly A. montana of the European Alps. Arnica is classified in the division MagnoliophytaMagnoliophyta
, division of the plant kingdom consisting of those organisms commonly called the flowering plants, or angiosperms. The angiosperms have leaves, stems, and roots, and vascular, or conducting, tissue (xylem and phloem).
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, class Magnoliopsida, order Asterales, family Asteraceae.



a genus of perennial herbs of the family Compositae.

There are more than 30 species of Arnica, most of which are found in North America. Some are found in Europe and Asia. In the USSR there are eight species. The best known is mountain tobacco (A. montana). It has a short, thick rhizome, is up to 60 cm high, and has a single involucrate head of yellow orange flowers. Mountain tobacco is found in Byelorussia, Lithuania, and the western Ukraine in forests and mountain meadows. As a rule, it grows in moist soils. In medicine an alcohol infusion made from the dried flower heads is used as a cholagogue and an antihemorrhagic (in uterine hemorrhaging). Mountain tobacco, A. foliosa, and A. chamissonis are cultivated as medicinal plants.


Atlas lekarstvennykh rastenii SSSR. Moscow, 1962.
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References in periodicals archive ?
The Arnica bulletin is the sixth publication in the series of Botanical Adulterants Bulletins.
Still, research suggests that arnica gels and creams rubbed into the skin (but not on open wounds) may be as effective as ibuprofen as a pain reliever, though some allergic skin reactions have been reported.
Arnica gel or ointment works as well as ibuprofen and other NSAIDs (nonsteroidal anti-inflammatory drugs).
We have heard and experienced personally many more Arnica success stories than we have space to recount in this article, but we will recount a few.
Topical arnica applied to the wound site can also reduce post-operative bruising and swelling.
I spoke to Sean Welch, a senior assistant vice president in the claims division at Arnica Mutual, to find out how the insurer gets such high satisfaction ratings from its policyholders.
Researchers at Romania's University of Medicine and Pharmacy, Targu Mures, carried this study out to determine what effect, if any, Arnica 7C could bring to bear on mice suffering from trauma, when compared to placebo.
This includes arnica oil for massage and five- six bottles of the usual round tablets.
She also suggests avoiding Traumeel and Arnica if you have any sensitivity to their ingredients, though the instances are rare.
The cookbook is funded by Arnica Publishing and Creative Services in Portland.
Arnica in popular medical books, almanacs and folklore before 1900