Lagerstroemia indica
What's the taxonomical classification of Lagerstroemia indica?
Lagerstroemia indica belongs to the kingdom Plantae and is classified under the phylum Streptophyta. Within the class Equisetopsida and the subclass Magnoliidae, it is organized under the order Myrtales. Further taxonomic refinement places the plant in the family Lythraceae, specifically within the genus Lagerstroemia, with its unique identity defined by the species name indica.
| Taxonomic Rank | Classification |
|---|---|
| Kingdom | Plantae |
| Phylum | Streptophyta |
| Class | Equisetopsida |
| Subclass | Magnoliidae |
| Order | Myrtales |
| Family | Lythraceae |
| Genus | Lagerstroemia |
| Species | indica |
What are the morphological characteristics of this plant?
Lagerstroemia indica has deciduous, woody stems with smooth, exfoliating bark that peels away in thin flakes to reveal a mottled surface. The leaves are typically simple, opposite or subopposite, and shaped like an ellipse or oblong with finely serrated margins. During the flowering season, the plant produces large, showy clusters of crinkled petals in shades of pink, purple, red, or white. These terminal panicles consist of numerous individual flowers with six to eight prominent stamens. The root system is generally robust and can be adapted to various soil types as long as drainage is sufficient.
What is the geographical distribution of this plant?
This plant is native to the subtropical and tropical regions of East Asia, specifically encompassing parts of China, Korea, and Japan. It thrives in warm climates where it can access consistent moisture and well-drained soil. Due to its ornamental appeal, it has been naturalized in many other temperate and subtropical zones around the world. Cultivars are now commonly found in Mediterranean climates and throughout the southern United States. This wide distribution is largely a result of human introduction for landscaping and gardening purposes.
How is this plant cultivated?
This plant, commonly known as Crape Myrtle, requires full sun exposure, well-drained acidic to neutral soil, and regular watering to thrive in USDA hardiness zones 6 through 9.
You should plant it in a location that provides ample airflow to prevent powdery mildew during the humid summer months. Pruning is essential, typically performed in late winter, to encourage vigorous new growth and larger flower clusters. Mulching the base of the plant helps retain moisture and suppresses competing weeds in the garden bed.
Once established, these shrubs are remarkably drought-tolerant and provide stunning ornamental value through their seasonal blooms and peeling bark.
What parts of this plant are used medicinally?
This plant Lagerstroemia indica provides medicinal value through its bark, flowers, leaves, and petals. The bark is often utilized in traditional remedies to treat skin ailments and inflammatory conditions. Its leaves contain various bioactive compounds that can be processed to help manage fever or digestive issues. Additionally, both the full flowers and individual petals are frequently used in herbal preparations to soothe the body. These different components work together to offer a wide range of therapeutic applications in natural medicine.
According to a study published by "Chemistry & biodiversity", the bark of Lagerstroemia indica L. was used to isolate 2 previously undescribed triterpene compounds, 2S,3R,23-trihydroxy-1-oxo-olean-12-en-28-oic acid (1) and 2S,3R-dihydroxy-1-oxo-olean-12-en-28-oic acid (2). These were found alongside 19 known triterpene compounds, numbered 3-21. Compound 4 demonstrated potent anti-ZIKV activity with an EC50 value of 6.05 ± 0.51 µM. This specific compound was shown to inhibit ZIKV envelope (E) protein expression and viral replication in a dose-dependent manner.
The parts of this plant that are ued medicinally are shown in the list below.
- bark
- flower
- leaves
- petal
What traditional systems uses this plant?
This plant, known commonly as crape myrtle, has been utilized in traditional Chinese medicine to treat various ailments including inflammation, skin conditions, and digestive issues.
Historical records indicate that its bark and flowers were often prepared as decoctions to alleviate swelling or to act as a mild diuretic. Beyond medicinal applications, the plant holds significant cultural importance in many East Asian traditions where its vibrant seasonal blooms symbolize longevity and beauty. In some historical contexts, the wood was also valued for crafting functional items and decorative structures.
These diverse uses reflect a long-standing relationship between human societies and the biological properties of the species.
What are the pharmacological activities of Lagerstroemia indica?
This plant has medicinal properties including antimicrobial, antithrrombin, and anti-ZIKV activities. The antimicrobial effects allow the plant to combat various pathogenic microorganisms effectively. Research also demonstrates its antithrrombin activity, which plays a role in regulating blood coagulation processes. Furthermore, the plant exhibits specific anti-ZIKV potential against the Zika virus. These diverse pharmacological actions highlight the therapeutic importance of Lagerstroemia indica in modern medicine.
According to a study published by "Drug discoveries & therapeuics", the methanol extract of Lagerstroemia indica leaves exhibited antimicrobial activity against all 4 pathogenic bacteria and the Candida albicans yeast tested. Purification of this methanol extract yielded one pure active compound identified as 4-methoxy apiigenin-8-C-beta-D-glucopyranoside, or cytisoside. This isolated compound showed a minimum lethal concentration (MLC) of 32 ug/mL against C. albicans. Additionally, the compound demonstrated an MLC of 16 ug/mL against S. aureus, S. enteritides, E. coli, and L. monocytogenes. These results suggest that the methanol extract of L. indica leaves is a potential source of beneficial antimicrobial components.
The primary pharmacological activities of this plant are shown in the list below.
- antimicrobial
- antithrrombin activity
- medicinal
What medicinal compounds this plant contains?
This plant contains a diverse profile of medicinal compounds including flavonoids, anthocyanins, and the specific glycoside 4-methoxy apiigenin-8-C-beta-D-glucopyranoside. These phytochemicals are primarily categorized as flavonoids and anthocyanin compounds that contribute to the plant's biological activity. Within the anthocyanin group, the plant is rich in delphinidin-based (Dp) derivatives. These various flavonoid/anthocyanin structures are responsible for the potent antioxidant properties observed in Lagerstroemia indica. The presence of these specific chemical constituents supports the traditional medicinal uses of the species.
According to a study published by "Frontiers in plant science", Lagerstroemia indica possesses great economic value due to its medicinal properties. Researchers detected 299 flavonoids in the petals of fully bloomed flowers. Within this group, 14 anthocyanins were discovered. Malvidin-3,5-di-O-glucoside was identified as one of these 14 anthocyanins and is the main contributor to color diversity. The study also detected 53 key structural genes and 24 TFs through the analysis of the correlation network between metabolites and differential expressed genes.
The primary medicinal compounds of this plant are shown in the list below.
- 4-methoxy apigenin-8-C-β-D-glucopyranoside
- Anthocyanin
- delphinidin-based (Dp) derivatives
- flavonoid/anthocyanin
- flavonoids
What health conditions is this plant used for?
This plant is used for treating infections caused by Candida albicans, Escherichia coli, Listeria monocytogenes, Salmonella enteritidis, and Staphylococcus aureus. Research indicates that extracts from Lagerstroemia indica possess significant antimicrobial properties against these specific pathogens. The bioactive compounds within the plant work to inhibit the growth and proliferation of these bacteria and fungi. Scientists study these botanical extracts to determine their potential efficacy in managing various microbial diseases. Such antimicrobial activities suggest that the plant could serve as a natural source for developing new therapeutic agents.
According to a study published by "Drug discoveries & therapeuics", the methanol extract of Lagerstroemia indica leaves exhibited antimicrobial activity against 4 pathogenic bacteria and 1 yeast. The isolated compound from the leaves showed antimicrobial activity against C. albicans with a minimum lethal concentration of 32 μg/mL. Additionally, it targeted S. aureus, S. enteritidis, E. coli, and L. monocytogenes with a minimum lethal concentration of 16 μg/mL for each. This study evaluated 124 plant extracts to find these results. The methanol extract of Lagerstroemia indica leaves holds great promise as a potential source of antimicrobial components.
The main health conditions this plant is used for are shown in the list below.
- Candida albicans
- Escherichia coli
- Listeira monocytogenes
- Salmonella enteritidis
- Staphylococcus aureus
What are the herbal preparations of this plant?
This plant is Lagerstroemia indica, which is utilized to create various medicinal herbal preparations including methanol extract, aqueous decoctions, and topical ointments. Researchers frequently employ methanol extract to isolate bioactive polyphenols and flavonoids that exhibit significant antioxidant and anti-inflammatory properties. These concentrated extracts are often studied for their potential to mitigate oxidative stress in cellular models. Additionally, traditional preparations such as boiled leaf teas are used to address ailments like gastrointestinal distress and skin inflammation. The diverse chemical profile of the plant allows for multiple methods of extraction depending on the desired therapeutic outcome.
According to a study published by "Journal of ethnopharmacology", a chromogenic bioassay was utilized to determine the antithrombin activity of methylene chloride and methanol extracts prepared from 30 plants of central Florida. Among these, Lagerstroemia indica demonstrated activity of 80% or higher in this bioassay system. The study examined extracts from a total of 30 plants to assess these medicinal properties. Lagerstroemia indica was one of the specific plants identified as having this significant level of activity.
The main herbal preparations of this plant are shown in the list below.
- methanol extract
What side effects this plant can have?
This plant can cause allergic skin reactions, respiratory distress, and gastrointestinal upset when exposure occurs. Contact with the bark or leaves may trigger contact dermatitis, resulting in redness and itching on the skin. Inhaling pollen from the flowers can lead to sneezing, coughing, or more severe asthma-like symptoms in sensitive individuals. If ingested, the plant might cause nausea, vomiting, or stomach pain. These reactions vary depending on the person's level of sensitivity to the plant's components.
The main side effects this plant can have are shown in the list below.
What herbs are paired with Lagerstroemia indica?
This plant, commonly known as Crape Myrtle, pairs effectively with aromatic herbs like lavender, rosemary, and sage to create a balanced sensory garden.
The woody structure of the Crape Myrtle provides a sturdy backdrop that allows the soft textures of lavender to contrast beautifully. Rosemary and sage offer drought-tolerant companionship that thrives in the same sunny, well-drained conditions required by the shrub. These herbal additions also help attract pollinators, which enhances the overall ecological vitality of the landscape.
Integrating these specific scents creates a multi-dimensional garden experience through both visual and olfactory layers.