Viola odorata

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sweet violet

A perennial herb that contains flavonoids, methyl salicylate, odoratine (an alkaloid), saponins and volatile oil; it is diuretic, expectorant and mildly sedative.

Chinese medicine
In traditional Chinese medicine, sweet violet has been used for inflammation and mumps. 

Herbal medicine
In Western herbal medicine, sweet violet is used internally for anxiety, hangovers, headaches, insomnia, sore throat and respiratory infections, and topically for cracked nipples; it was once believed to be effective for skin cancer.
Nausea and vomiting.

Viola odorata,

n See violet.
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References in periodicals archive ?
uk which holds some of the National Collection of Viola odorata and Parma violets.
The sweet violet Viola odorata continues to be the most easily recognised, and its hybrid descendants and cultivars are countless.
In Viola odorata (Violaceae), both leaves and petioles of CL plants are much larger than are those of the ancestral CH plants, probably as a result of increased growth rate (acceleration) (Mayers & Lord, 1983a).
WINTER STARS: Stunning eranthis are perfect under shrubs or trees; SUPER-BRIGHT: Rhododendrons prefer moist shade; PERFUMED: Honeysuckle; TINY: Viola odorata
VIOLA odorata, a european native of hedges and woodland, flowers between February and May producing fragrant flowers in white, violet, lilac or pink.