Acalypha wilkesiana
What's the taxonomical classification of Acalypha wilkesiana?
Acalypha wilkesiana belongs to the kingdom Plantae and is classified under the phylum Streptophyta. Within this lineage, it is categorized under the class Equisetopsida and the subclass Magnoliidae. Moving down the taxonomic hierarchy, the plant is organized under the order Malpighiales and falls within the family Euphorbiaceae. Finally, it is identified by its specific genus, Acalypha, and its unique species name, wilkesiana.
| Taxonomic Rank | Classification |
|---|---|
| Kingdom | Plantae |
| Phylum | Streptophyta |
| Class | Equisetopsida |
| Subclass | Magnoliidae |
| Order | Malpighiales |
| Family | Euphorbiaceae |
| Genus | Acalypha |
| Species | wilkesiana |
What are the morphological characteristics of this plant?
Acalypha wilkesiana has large, ovate to elliptical leaves that typically measure between 10 and 25 centimeters in length and feature serrated margins and prominent venation. These leaves exhibit a wide range of vibrant colors, including shades of copper, red, pink, and bronze, which often transition as the foliage matures. The plant grows as a woody shrub reaching heights of up to 3 meters with a spreading canopy. Small, inconspicuous flowers are produced in cylindrical spikes that emerge from the leaf axils. The texture of the foliage is often slightly velvety or leathery depending on the specific cultivar.
What is the geographical distribution of this plant?
This plant is native to the tropical regions of Africa, spanning from West Africa to East Africa and down through the southern parts of the continent. It thrives primarily in humid, equatorial climates where consistent rainfall and warmth are available. While its natural range is centered in Africa, it has been widely introduced to other tropical areas around the world as an ornamental species. You can commonly find it growing in coastal regions and subtropical landscapes in parts of Asia and the Pacific Islands. Its ability to adapt to various tropical environments has allowed it to spread far beyond its original geographic borders.
How is this plant cultivated?
This plant, commonly known as copperleaf, requires well-draining soil, consistent moisture, and bright indirect sunlight or partial shade to thrive in tropical or subtropical climates.
To maintain its vibrant multicolored foliage, you should provide regular fertilization during the growing season. Pruning is essential to control its size and encourage bushier growth through new stems. While it is relatively hardy, protecting it from frost is necessary to prevent leaf damage or death.
Periodic mulching helps retain soil moisture and suppresses competing weeds around the base.
What parts of this plant are used medicinally?
This plant, Acalypha wilkesiana, is utilized medicinally through the application of its leaves, roots, and bark. The leaves are frequently prepared as infusions or decoctions to treat various ailments such as stomach upsets or skin irritations. Extracts from the roots are often employed in traditional practices to address digestive issues and inflammation. Additionally, the bark contains bioactive compounds that are used to manage fever or other systemic infections. These diverse components provide a versatile medicinal resource within many herbal traditions.
According to a study published by "Journal of ethnopharmacology", the leaves of Acalypha wilkesiana were investigated through water, ethanol, chloroform and hexane extracts. The water and ethanol extracts inhibited the growth of bacteria and fungi such as Staphylococcus aureus, Trichophyton rubrum, Trichophyton mentagrophytes, Candida albicans and Aspergillus flavus. While the aqueous extract did not exert inhibitory action on Klebsiella pneumoniae and Proteus mirabilis, the ethanol extract remained active. The minimum inhibitory concentrations of the extracts ranged between 0.25 and 32 mg/ml. Furthermore, the minimum cidal concentrations were found to be between 1.0 and 64 mg/ml. The aqueous extract was static in action, whereas the ethanolic extract was uniformly cidal in effect.
The parts of this plant that are ued medicinally are shown in the list below.
- leaf
- root bark
What traditional systems uses this plant?
This plant, Acalypha wilkesiana, is utilized extensively within Traditional African Medicine to treat various ailments such as skin infections, digestive issues, and inflammatory conditions. Local practitioners often prepare decoctions from the leaves to serve as topical treatments for wounds or as medicinal teas for internal wellness. In many communities, the plant is also valued for its potential to manage symptoms related to malaria and fever. Beyond its medicinal applications, its presence in traditional landscapes often carries cultural significance related to herbal knowledge passed through generations. These historical uses demonstrate the plant's deep integration into the healing practices of diverse African ethnic groups.
According to a study published by "BMC complementary and alternative medicine", Acalypha wilkesiana is used by traditional medical practitioners for the treatment of several ailments of microbial and non-microbial origins. Both water and ethanol extracts of this plant were found to be effective on MRSA. The ethanol extracts of the plant showed a Minimum Inhibition Concentration (MIC) and Minimum Bactericidal Concentration (MBC) ranging from 18.2 to 24.0 mcg/ml and 30.4 to 37.0 mcg/ml respectively. These results offer a scientific basis for the traditional use of water and ethanol extracts of Acalypha wilkesiana against MRSA-associated diseases.
The hystorical systems that uses this plant are shown in the list below.
- Traditional African Medicine
What are the pharmacological activities of Acalypha wilkesiana?
This plant has documented pharmacological activities including analgesic, anti-inflammatory, antibacterial, antimicrobial, and antioxidant properties. Its phytochemical constituents work together to alleviate pain and reduce swelling in various biological models. Research indicates that the plant possesses strong antimicrobial capabilities that can inhibit the growth of diverse pathogenic microorganisms. Furthermore, its antioxidant capacity helps neutralize free radicals to prevent cellular damage. These combined medicinal effects suggest significant potential for developing new therapeutic agents from its extracts.
According to a study published by "Nigerian journal of physiological sciences : official publication of the Physiological Society of Nigeria", the ethanol extract of Acalypha wilkesiana leaves produces significant (p<0.05) analgesic and anti-inflammarotory activities. The study utilized three extract groups administered at doses of 25, 50, or 100 mg/Kg body weight to evaluate these effects. In addition to these activities, the extract significantly protected against ethanol induced ulcer. The research also demonstrated that the extract significantly (p<0.05) reduced the pyretic states of the animals. These results provide evidence to support the ethnomedicinal uses of the ethanolic extracts of Acalypha wilkesiana leaves.
The primary pharmacological activities of this plant are shown in the list below.
- analgesic
- anti-inflammatory
- antibacterial
- antimicrobial
- antioxidant
What medicinal compounds this plant contains?
This plant contains flavonoids, tannic acid, phenols, saponins, and triterpenes which serve as its primary medicinal compounds. These bioactive constituents contribute to the various therapeutic properties observed in its traditional uses. The presence of phenols and flavonoids provides significant antioxidant activity to combat oxidative stress. Additionally, the combination of saponins and triterpenes can influence biological functions such as anti-inflammatory and antimicrobial responses. Tannic acid further supports these medicinal qualities by offering astringent effects within the plant's chemical profile.
According to a study published by "Heliyon", phytochemical screening confirmed the presence of saponins, flavonoids, phenols and triterpenes for Acalypha wilkesiana. These phytomolecules served as both capping and stabilizing agent in the green synthesis of silver nanoparticles. The synthesis of Acalypha wilkesiana silver nanoparticles utilized parameters such as pH 9, 90 min contact time, 0.001 M Ag+ concentration, and a volume ratio of 1:9. Additionally, the temperature used for the process was between 90 - 100 °C. These components allow the resulting AW-AgNPs to be recommended as potential antimicrobial and therapeutic agents against multidrug resistant pathogens.
The primary medicinal compounds of this plant are shown in the list below.
- flavonoids
- phenols
- tannic acid
- saponins
- triterpenes
What health conditions is this plant used for?
This plant is used for managing type 2 diabetes mellitus and treating various skin disorders such as dermatitis, eczema, and superficial fungal skin infections. Its medicinal properties are frequently applied topically to soothe irritated or inflamed skin surfaces. Researchers often investigate its bioactive compounds to understand how they combat persistent dermatological issues. Beyond topical applications, its role in regulating blood glucose levels makes it a significant subject in traditional herbal medicine. These diverse therapeutic uses highlight the plant's potential in both metabolic and dermatological healthcare.
According to a study published by "Journal of diabetes research", Acalypha wilkesiana is ethnobotanically used in the management of Type 2 diabetes mellitus (T2DM). A total of 44 articles were considered in this review to understand its potential in T2DM therapy. Experimental studies revealed that extracts of the plant inhibit α-glucosidase and α-amylase to manage carbohydrate breakdown. Notably, the ethanolic root bark extracts showed lower inhibitory concentrations compared to extracts in other solvents and the drug acarbose. The leaves of the plant can restore the alloxan-induced impairment of pancreas and spleen cells without harmful effects on the red blood cells of diabetic rabbits.
The main health conditions this plant is used for are shown in the list below.
- Type 2 diabetes mellitus
- dermatitis
- eczema
- inflammation
- skin disorders
What are the herbal preparations of this plant?
This plant is utilized to create medicinal preparations including Acalypha wilkesiana extract, ethanolic root bark extracts, and a specialized herbal cream. Practitioners often use the aqueous extract to treat various inflammatory conditions or digestive issues. The ethanolic root bark extracts are frequently prepared to harness more concentrated bioactive compounds for systemic healing. Additionally, the herbal cream is formulated for topical application to soothe skin irritations or wounds. These diverse preparations allow for the versatile application of the plant's therapeutic properties in traditional medicine.
According to a study published by "Heliyon", the medicinal plant extract of Acalypha wilkesiana was used in a single pot green synthesis of silver nanoparticles via a bottom-up approach. Phytochemical screening confirmed that Acalypha wilkesiana contains saponins, flavonoids, phenols, and triterpenes which act as capping and stabilizing agents. Optimal synthesis of Acalypha wilkesiana silver nanoparticles required a pH of 9, a 90 min contact time, a 0.001 M Ag+ concentration, a 1:9 volume ratio of extract to Ag+ solution, and a temperature between 90 - 100 °C. The formation of these nanoparticles resulted in a surface Plasmon resonance observed at 450 nm. Additionally, EDX confirmed the nanoparticles with a characteristic intense peak at 3.0 keV.
The main herbal preparations of this plant are shown in the list below.
- Acalypha wilkesiana extract
- ethanolic root bark extracts
- herbal cream
What side effects this plant can have?
This plant can cause skin conditions such as pityriasis versicolor and seborrheic dermatitis when individuals come into direct contact with its sap or foliage. Exposure to the plant's chemical components may trigger these specific dermatological issues in sensitive people. Pityriasis versicolor manifests as discolored patches on the skin that can be caused by contact-induced changes in the skin's fungal environment. Similarly, seborrheic dermatitis can arise as an inflammatory response resulting from irritation caused by the plant. It is important to handle this species with caution to avoid these adverse health reactions.
According to a study published by "African journal of infectious diseases", Acalypha wilkesiana is a medicinal plant used to treat skin disorders like pityriasus versiColor and seborrhreic dermatitis. The study investigated 2 cultivars, Macrophylla and Hoffmanii, using ethanol extract and herbal cream formulations. Both cultivars showed activity against all tested fungi except Microsporum canis, which recorded 8.0±0.00 and 7.00±0.00 mm. The greatest activity was observed against Trichophyton rubrum at 22.0±0.00 and 24.00±0.00 mm. The Minimum Inhibitory Concentration for the crude extract ranged between 0.25 and 8 mg/ml, while the herbal cream ranged from 0.31-8mg/ml.
The main side effects this plant can have are shown in the list below.
- pityriasis versicolor
- seborrheic dermatitis
What herbs are paired with Acalypha wilkesiana?
This plant pairs best with complementary foliage plants like Crotons, Coleus, and Cordylines to create vibrant tropical color contrasts.
The copper and red hues of the Acalypha wilkesiana leaves are enhanced when placed near deep green ferns or chartreuse Sweet Potato Vines. Using plants with varying leaf textures, such as the waxy leaves of Bromeliads, helps to accentuate its unique serrated margins. Grouping these species together ensures a cohesive garden bed that thrives in similar humid and sunny environments.
This combination maximizes visual impact through a sophisticated balance of warm and cool tones.