Viola odorata
What's the taxonomical classification of Viola odorata?
Viola odorata belongs to the kingdom Plantae and is classified within the phylum Streptophyta. Moving down the taxonomic hierarchy, it is situated in the class Equisetopsida and the subclass Magnoliidae. It falls under the order Malpighiales and is a member of the family Violaceae. Within this family, the plant is categorized under the genus Viola, and its specific designation is the species odorata.
| Taxonomic Rank | Classification |
|---|---|
| Kingdom | Plantae |
| Phylum | Streptophyta |
| Class | Equisetopsida |
| Subclass | Magnoliidae |
| Order | Malpighiales |
| Family | Violaceae |
| Genus | Viola |
| Species | odorata |
What are the morphological characteristics of this plant?
Viola odorata has heart-shaped, crenate-margined leaves that grow in basal rosettes and zygomorphic, five-petaled violet flowers with yellow centers. The leaves are typically dark green and possess long petioles that emerge from a creeping rhizome. Each flower features two upper petals, two lateral petals with delicate nectar guides, and two lower petals. The plant also produces small, three-valved capsules that split open to disperse seeds upon maturity. These botanical structures allow the species to thrive in shaded woodland environments.
What is the geographical distribution of this plant?
This plant is native to Europe and parts of temperate Asia, where it naturally grows in shaded woodlands and meadows. Its range extends from the British Isles across much of the European continent toward the Caucasus Mountains. Due to its popularity in horticulture, it has been widely introduced to North America and other temperate regions around the world. In these non-native habitats, it often spreads easily through its creeping rhizomes. The species thrives in regions characterized by mild climates and moist, well-drained soils.
How is this plant cultivated?
This plant, Viola odorata, thrives best in moist, well-drained soil and partial to full shade environments where it can spread via rhizomes.
To ensure successful cultivation, gardeners should plant these violets in early spring or autumn to allow root systems to establish. Because they are prone to spreading quickly, they are ideal for groundcover in areas that require consistent moisture. Regular weeding and occasional thinning help maintain the density and health of the colony.
Once established, the plant requires minimal maintenance beyond ensuring it does not dry out completely.
What parts of this plant are used medicinally?
This plant Viola odorata provides medicinal benefits through the use of its flowers, leaves, roots, seeds, and petioles. The fragrant flowers are often utilized in syrups and tinctures to soothe respiratory ailments. Both the leaves and the petioles contain compounds that can be applied topically or ingested to aid digestion. The roots are highly valued in traditional herbalism for their ability to treat inflammatory conditions. Additionally, the seeds are occasionally processed for their specific chemical properties in specialized remedies.
According to a study published by "Scientific reports", the flowers of Viola odorata are used medicinally and contain 81.34 ± 0.17 mg GAE/g of total phenolics, 69.45 ± 0.24 mg CE/g of flavonoids, and 92.43 mg cyanidin-3-glucoside/100 g of anthocyanins. HPLC analysis of these flowers revealed twelve phenolic acids and ten flavonoids, including gentisic acid at 391.37 μg/g, apiigenin-7-glucoside at 417.22 μg/g, catechin at 372.56 μg/g, and rutin at 262.73 μg/g. UPLC/ESI-MS identified 8 phenolic acids and derivatives, 3 flavonols, 4 flavones, 14 flavonoid glycosides, and 5 anthocyanins derived from cyanidin, delphinidin, and petunidin. Three specific flavonoids, 5,7-dihydroxy-3,6-dimethoxyflavone, luteolin 7-O-glucoside, and kaempferol 3-O-rutinoside, were isolated from the flowers. These floral components exhibited dose-dependent cytotoxicity and anti-inflammatory effects across HepG2, Caco-2, and HTC-116 cell lines.
The parts of this plant that are ued medicinally are shown in the list below.
- flower
- leaf
- root
- seed
- petiole
What traditional systems uses this plant?
This plant, Viola odorata, has been utilized across various historical medical frameworks including Ayurveda, Iranian traditional medicine, and Unani systems to treat respiratory and inflammatory conditions. In the Ayurvedic tradition, it is often employed to balance bodily doshas and manage ailments related to the lungs and skin. Iranian traditional medicine practitioners have historically used its extracts to soothe coughs and address various internal imbalances. Similarly, the Unani system incorporates the plant to treat ailments of the chest and to act as a mild sedative. These diverse cultural practices highlight the long-standing medicinal reputation of the violet across different global healing traditions.
According to a study published by "Brazilian journal of microbiology : [publication of the Brazilian Society for Microbiology]", Viola odorata, also known as Banafshah in high altitudes of the Himalayas, is well known for its pharmaceutical importance in Ayurvedic and Unani medicinal systems. The plant serves as a source of various drugs for its anti-inflammatory, diaphoritic, diuretic, emollient, expectorant, antipyretic, and laxative properties. In the research, a total of 244 endophytes were isolated in pure cultures from the roots of Viola odorata. The screening of these endophytes showed antimicrobial activity of 11 bacterial isolates and one actinomycete SGA9 against various pathogens. Additionally, antioxidant activity showed the majority of bacterial isolates were able to scavenge the free radical in the range of 10-50% and 8 bacterial isolates in the range of 50-85%.
The hystorical systems that uses this plant are shown in the list below.
- Ayurveda
- Iranian traditional medicine
- Unani
What are the pharmacological activities of Viola odorata?
This plant has analgesic, anti-inflammatory, antioxidant, antitussive, and expectorant pharmacological activities. Its antioxidant properties help neutralize free radicals, thereby protecting cells from oxidative stress. The plant also functions as an effective analgesic and anti-inflammatory agent to alleviate pain and reduce swelling. Additionally, it serves respiratory purposes by acting as both an antitussive to suppress coughing and an expectorant to clear mucus. These diverse therapeutic effects make Viola odorata a significant subject in medicinal research.
According to a study published by "Phytotherapy research : PTR", Viola odorata L. has shown various medical applications used in traditional Persian medicine from the 10th to the 18th century AD. The plant is used for the management of cough, fever, common cold, headache, insomnia, epilepsy, constipation, palpitation, dyspnea, dysuria, and skin diseases. In modern phytotherapy, this herb plant has exerted antiinflammatory, analgesic, antioxidant, diuretic, antihypertensive, and antibacterial activities. Pharmacological activities of Viola odorata are attributed to flavonoids, saponins, and alkaloids. Although some medical applications have been proven by recent studies, more research is needed to confirm these medicinal properties.
The primary pharmacological activities of this plant are shown in the list below.
- analgesic
- anti-inflammatory
- antioxidant
- antitussive
- expectorant
What medicinal compounds this plant contains?
This plant contains the medicinal compounds violet oil, methyl salicylate, cycloviolacin O15, cycloviolacin O2, and cycloviolacin O36. The presence of methyl salicylate provides the plant with significant analgesic and anti-inflammatory properties. Within its chemical profile, the various cycloviolacin derivatives such as O15, O2, and O36 contribute to its unique bioactive characteristics. Violet oil serves as a primary aromatic component that is frequently utilized in traditional herbal preparations. These diverse constituents work together to define the therapeutic potential of Viola odorata.
According to a study published by "Journal of ethnopharmacology", Violet oil is an almond or sesame oil-based extract of Viola odorata. This herbal drug is administered as nasal drops consisting of three drops of the drug used every night before sleep for 30 days. In a 3-arm double-blind randomized trial involving 75 patients, the efficacy of this Viola odorata extract was evaluated. The study found significant improvements in ISI scores with a P<0.002 and PSQI scores with a p<0.001 after the intervention. Specifically, the Violet oil group showed significant improvement with a P<0.001.
The primary medicinal compounds of this plant are shown in the list below.
- Violet oil
- methyl salicylate
- coumarins
- cycloviolacin O15
- cycloviolacin O2
What health conditions is this plant used for?
This plant is used for treating asthma, cough, constipation, diarrhea, and various respiratory diseases. The flowers and leaves are often prepared as infusions or syrups to soothe irritation in the lungs and bronchial tubes. When addressing respiratory diseases, its properties help ease the difficulty of breathing and reduce persistent coughing fits. For digestive issues, specific preparations of the plant act as a gentle remedy to regulate bowel movements. This versatility allows it to serve as a traditional treatment for both lung-related and gastrointestinal ailments.
According to a study published by "Journal of ethnopharmacology", Viola odorata L. is used in traditional Persian medicine for alleviating respiratory infection symptoms through anti-inflammatory, antioxidant, anti-asthmatic, antitussive, analgesic, and antibacterial activities. These activities help enhance respiratory functions, reduce pulmonary inflammation, and decline mucous membrane edema. In a randomized double-blind controlled trial involving 108 outpatients, with 54 patients in each group, the syrup was tested against COVID-19 manifestations. The study found that Viola odorata effectively controls cough (P = 0.025), myalgia (P = 0.036), headache (P = 0.037), and diarrhea (P = 0.044). Consequently, the plant can serve as a complementary treatment for viral influenza-like infections where these specific symptoms are prominent.
The main health conditions this plant is used for are shown in the list below.
- cough
- constipation
- insomnia
- skin disorders
- urinary ailments
What are the herbal preparations of this plant?
This plant is Viola odorata, a species utilized to create various medicinal preparations including Viola odorata leaves extract, violet oil, decoction, dry plant powder, and sweet syrup. The leaves extract and violet oil are often employed for their aromatic properties and potential topical applications. A decoction can be prepared by boiling the plant parts to extract soluble medicinal compounds for internal use. Additionally, the dry plant powder serves as a versatile base for compounding different herbal remedies. Finally, a sweet syrup is commonly produced to mask the flavor of the plant while providing a soothing effect for the throat.
According to a study published by "Lipids in health and disease", Viola odorata leaves extract (Vo.Cr) tested positive for alkaloids, saponins, tannins, phenolics, coumarins and flavonoids. This extract caused a dose-dependent decrease in mean arterial blood pressure in anaesthetized rats at doses of 0.1-1.0 mg/kg. In experiments involving phenylephrine (PE, 1 μM) and K(+) (80 mM)-induced vasoconstriction, Vo.Cr caused a concentration-dependent relaxation and a rightward shift of Ca(++) concentration-response curves. The plant extract also addressed Tyloxapol-induced dyslipidemia by reducing total cholesterol and triglyceride levels. In a high-fat diet-induced dyslipidemia model, Vo.Cr caused a significant decrease in total cholesterol, LDL-C, and the atherogenic index while increasing HDL-C.
The main herbal preparations of this plant are shown in the list below.
- Viola odorata leaves extract
- Violet oil
- decoction
- dry plant powder
- sweet syrup
What side effects this plant can have?
This plant can cause several adverse health effects including constipation, cough, dyspnea, dysuria, and insomnia. Consumption of Viola odorata may lead to respiratory issues such as a persistent cough or difficulty breathing known as dyspnea. Gastrointestinal complications can manifest as constipation following ingestion of the plant. Some individuals might also experience urinary discomfort or dysuria during use. Furthermore, the plant has been associated with sleep disturbances characterized by insomnia.
According to a study published by "Phytotherapy research : PTR", Viola odorata L. has been used in traditional Persian medicine from the 10th to the 18th century AD. This plant is used for the management of various conditions including cough, fever, common cold, headache, insomnia, epilepsy, constipation, palpitation, dyspnea, dysuria, and skin diseases. In modern phytotherapy, the herb exerts antiinflammatory, analgesic, antioxidant, diuretic, antihypertensive, and antibacterial activities. The pharmacological activities are attributed to flavonoids, saponins, and alkaloids. While some medicinal applications have been proven by recent studies, more research is needed to confirm these properties.
The main side effects this plant can have are shown in the list below.
- constipation
- cough
- dyspnea
- dysuria
- insomnia
What herbs are paired with Viola odorata?
This plant pairs exceptionally well with sweet and fruity herbs such as mint, lemon balm, and strawberry leaves to enhance its delicate floral notes.
When used in savory applications, its subtle sweetness can be balanced by the earthy undertones of thyme or the peppery bite of basil. These combinations are frequently employed in botanical syrups and infused sugars to create complex flavor profiles. Many chefs also combine it with citrusy herbs like rosemary to add a sophisticated aromatic layer to desserts.
Using these specific pairings allows the nuanced scent of the violet to shine without being overwhelmed.