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The Collaborative International Dictionary
Arnica

Arnica \Ar"ni*ca\, n. [Prob. a corruption of ptarmic

  1. ] (Bot.) A genus of plants; also, the most important species ( Arnica montana), native of the mountains of Europe, used in medicine as a narcotic and stimulant.

    Note: The tincture of arnica is applied externally as a remedy for bruises, sprains, etc.

Douglas Harper's Etymology Dictionary
arnica

plant genus of the borage family, 1753, Modern Latin, of unknown origin. Klein suggests Arabic arnabiyah, a name of a type of plant, as the ultimate source.

Wiktionary
arnica

n. Any of several plants, of the genus ''Arnica'', considered to have medicinal properties.

WordNet
arnica
  1. n. used especially in treating bruises

  2. any of various rhizomatous usually perennial plants of the genus Arnica

  3. an ointment used in treating bruises

Wikipedia
Arnica

Arnica is a genus of perennial, herbaceous plants in the sunflower family ( Asteraceae). The genus name Arnica may be derived from the Greek arni, "lamb", in reference to the soft, hairy leaves.

This Circumboreal and montane (subalpine) genus occurs mostly in the temperate regions of western North America, with a few species native to the Arctic regions of northern Eurasia and North America.

Arnica used to be included in the tribe Senecioneae because it has a flower or pappus of fine bristles. This was soon questioned and Nordenstam (1977) placed it tentatively in tribe Heliantheae s.l. This arrangement also became uncertain because of the sesquiterpene lactone chemistry in certain species. Recently Arnica was placed in an unresolved clade together with Madiinae, Eupatorieae, Heliantheae s.s. and Pectidinae.

Several species, such as Arnica montana and A.chamissonis, contain helenalin, a sesquiterpene lactone that is a major ingredient in anti-inflammatory preparations (used mostly for bruises).

Arnica species are used as food plants by the larvae of some Lepidoptera species including Bucculatrix arnicella.

Arnica is also known by the names Mountain Tobacco and, somewhat confusingly, Leopard's bane and Wolfsbane—two names that it shares with the entirely unrelated genus Aconitum.

Usage examples of "arnica".

Assisted by a number of other persons in good health, he experimented on the effects of cinchona, aconite, sulphur, arnica, and the other most highly extolled remedies.

He glanced back at Arnica standing by the rear wheel of the pick-up, her face averted, then motioned for us to get back into the car.

Arnica shrank back and averted her gaze, staring at the side of the helicopter as they passed her.

Arnica shook the sleeves of her burka over her wrists and slid to the far side of the seat.

I heard a muffled sound Behind the burka, I was sure that Arnica was crying.

It was not until the autumn, when it was time for the flowers to die, that the sorrel blessing of waste lands flushed rosily and the arnica showed its stars of slender threads of gold, and there might even be a slight glimpse of purple aster and a dusty spray or two of goldenrod.

The bruises would hurt for some time to come, but arnica would ease that.

A mug of hot tea, again mildly laced with brandy and a little tincture of arnica, and she felt ready to return to her room and face the coming day, probably most of it asleep.

The Boy has a compress of Arnica Tea upon his Thump by now, and will be all right.

After he had washed himself and tended his injuries with arnica and water, John managed to limp into the principal sitting-room, where supper was waiting.

I consider that, more than to anything else, I owe the success of our great undertaking to arnica and paregoric.

In fresh water, she made an infusion of arnica flowers, then made a wet compress for the swelling and tied it on with a leather strip.

There was even a soldier who, to crave indulgence for his amorous excesses, chose as his emblem a helmet in which a pair of doves had nested, with the motto Arnica Venus.

It may be worthy of remark that the tincture of Arnica montana, of which I had a small supply, proved of great value to those of us who had been hurt.

Arnica flowers are sometimes adulterated with other composite flowers, especially Calendula officinalis, Inula brittanica, Kragapogon pratensis, and Scorzonera humilis.