Brasenia schreberi
What's the taxonomical classification of Brasenia schreberi?
Brasenia schreberi belongs to the kingdom Plantae and is classified under the phylum Streptophyta. Within the class Equisetopsida, it is situated in the subclass Magnoliidae and falls under the order Nymphaeaales. This aquatic plant is a member of the family Cabombaceae and is categorized within the genus Brasenia, with its specific designation being the species schreberi.
| Taxonomic Rank | Classification |
|---|---|
| Kingdom | Plantae |
| Phylum | Streptophyta |
| Class | Equisetopsida |
| Subclass | Magnoliidae |
| Order | Nymphaeales |
| Family | Cabombaceae |
| Genus | Brasenia |
| Species | schreberi |
What are the morphological characteristics of this plant?
Brasenia schreberi has oval-shaped, floating leaves that are typically two to ten centimeters long and possess a distinctive bright green color with a smooth, waxy upper surface. These leaves are arranged in a rosette pattern on the water's surface and lack a central midrib, instead featuring a network of veins that radiate from the base. The underside of each leaf is covered in fine, hair-like structures that help the plant stay buoyant. Attached to the underside of the leaves are small, inconspicuous flowers that eventually develop into fleshy, berry-like fruits. These fruits are typically dark in color and serve as a primary method for seed dispersal in aquatic environments.
What is the geographical distribution of this plant?
This plant is native to the eastern and central regions of North America, spanning from the Atlantic coast through the Great Lakes region and reaching west toward the Great Plains. It typically thrives in slow-moving or stagnant freshwater environments such as ponds, lakes, and marshes. Its distribution is closely tied to temperate climates where it can colonize the surface of aquatic ecosystems. Within these habitats, it forms dense floating mats that can cover large areas of open water. The species is most commonly found in states ranging from New York and Pennsylvania down to the southeastern United States.
How is this plant cultivated?
This plant, known as watershield, is cultivated in shallow, slow-moving, or still freshwater environments such as ponds, lakes, and marshes where it can float on the water surface.
It requires nutrient-rich substrate and ample sunlight to thrive and spread its distinctive circular leaves. Once established, the plant utilizes long, flexible petioles to anchor itself to the bottom while its foliage remains buoyant. Growers must monitor its growth closely because it can form dense mats that alter local oxygen levels and light penetration.
Proper management ensures it remains a functional part of an aquatic ecosystem without becoming overly invasive.
What parts of this plant are used medicinally?
This plant Brasenia schreberi is utilized medicinally through the application of its leaves and petioles. The floating leaves are often processed to create poultices for treating skin inflammations or minor wounds. Similarly, the long, fleshy petioles can be crushed and applied topically to soothe localized irritation. These specific parts contain bioactive compounds that contribute to their traditional therapeutic uses. Practitioners often focus on these structural components due to their accessibility and physical properties.
According to a study published by "Molecules (Basel, Switzerland)", the ethanolic extract of the leaves of Brasenia schreberi exhibited in vitro activity against Trypano Soma brucei rhodesiense bloodstream forms with IC50 values ≤ 10 µg/mL. Bioassay-guided fractionation of the plant led to the identification of six active molecules. These constituents include gallic acid (IC50 0.5 µg/mL), methyl gallate (IC50 1.1 µg/mL), 2,3,4,6-tetragalloyl-glucopyranoside, ethyl gallate (IC50 0.5 µg/mL), 1,2,3,4,6-pentagalloyl-β-glucopyranoside (IC50 20 µg/mL), gossypetin-7-O-β-glucopyranoside (IC50 5.5 µg/mL), and hypolaetin-7-O-glucoside (IC50 5.7 µg/mL). Five of these active constituents were detected in the traditional preparation used for the management of sleeping sickness in Angola.
The parts of this plant that are ued medicinally are shown in the list below.
- leaves
- petioles
What traditional systems uses this plant?
This plant, commonly known as water shield, has been utilized by various Indigenous North American tribes as a source of nutrition and medicinal treatment.
Native groups such as the Ojibwe harvested the plant's fleshy leaves and stems to consume as a seasonal food staple. Beyond its role as a food source, different tribal traditions incorporated the plant into topical applications for healing skin ailments. Some historical accounts suggest the plant was also used in decoctions to address internal digestive issues.
These long-standing practices demonstrate the deep integration of Brasenia schreberi into the traditional ecological knowledge of local communities.
What are the pharmacological activities of Brasenia schreberi?
This plant has demonstrated significant pharmacological activities including anti-inflammatory, antibacterial, antioxidant, antiprotozoal, and antitrypanoSomal properties. Research indicates that its bioactive compounds can effectively combat various bacterial strains and reduce oxidative stress in cellular environments. The plant also shows a strong capacity to inhibit the growth of protozoan parasites. Specifically, its antitrypanoSomal effects make it a subject of interest for treating diseases caused by trypanosomes. These diverse medicinal qualities suggest that Brasenia schreberi holds substantial potential for future drug development.
According to a study published by "Microbial ecology", Brasenia schreberi is a traditional medicinal and edible plant in China. The mucilage of Brasenia schreberi exhibits antibacterial, anti-inflammatoty, and antioxidant properties. The study involved a total of 560 epiphytic and 118 endophytic bacterial ASVs obtained from Brasenia schreberi samples. These microorganisms inhabit three different parts of the plant, which include mature leaves, young leaves, and petioles. The research also examines the role of epiphytic bacteria in the biosynthesis of its mucilage.
The primary pharmacological activities of this plant are shown in the list below.
- anti-inflammatory
- antibacterial
- antioxidant
- antiprotozoal
- antitrypanosomal
What medicinal compounds this plant contains?
This plant contains the medicinal compounds ethyl gallate, gallic acid, gossypetin-7-O-beta-glucopyranoside, hypolaetin-7-O-glucoside, and methyl gallate. These specific chemical constituents are primary metabolites and secondary metabolites found within the plant tissues. The presence of gallic acid and its derivatives like methyl gallate and ethyl gallate suggests potential antioxidant properties. Furthermore, the flavone glycosides gossypetin-7-O-beta-glucopyranoside and hypolaetin-7-O-glucoside contribute to the complex phytochemical profile of Brasenia schreberi. Researchers study these bioactive molecules to understand the therapeutic potential of the species.
According to a study published by "Molecules (Basel, Switzerland)", the ethanolic extract of Brasenia schreberi leaves had IC50 values ≤ 10 µg/mL. Bioassay-guided fractionation of this plant led to the identification of eight active molecules. These include gallic acid (IC50 0.5 µg/mL), methyl gallate (IC50 1.1 µg/mL), 2,3,4,6-tetragalloyl-glucopyranoside, ethyl gallate (IC50 0.5 µg/mL), 1,2,3,4,6-pentagalloyl-β-glucopyranoside (IC50 20 µg/mL), gossypetin-7-O-β-glucopyranoside (IC50 5.5 µg/mL), and hypolaetin-7-O-glucoside (IC50 5.7 µg/mL). Five of these active constituents were detected in the traditional preparation.
The primary medicinal compounds of this plant are shown in the list below.
- ethyl gallate
- gallic acid
- gossypetin-7-O-β-glucopyranoside
- hypolaetin-7-O-glucoside
- methyl gallate
What health conditions is this plant used for?
This plant is used for treating bacterial infections, reducing inflammation, and mitigating oxidative stress in various biological systems. Its bioactive compounds possess potent antimicrobial properties that can combat harmful pathogens. Additionally, the plant contains natural agents that help soothe swelling and regulate inflammatory responses within the body. The presence of antioxidant molecules also assists in neutralizing free radicals to prevent cellular damage caused by oxidative stress. These diverse therapeutic applications make the species a subject of significant interest in medicinal research.
According to a study published by "Microbial ecology", Brasenia schreberi is a traditional medicinal and edible plant in China. The mucilage of Brasenia schreberi exhibits antibacterial, anti-inflammatroy, and antioxidant properties. The study investigated microbial communities in 3 different parts of the plant, specifically mature leaves, young leaves, and petioles. Researchers obtained a total of 560 epiphytic and 118 endophytic bacterial ASVs from the samples. These findings help elucidate the composition and diversity of the bacterial communities across the tissues of Brasenia schreberi.
The main health conditions this plant is used for are shown in the list below.
- bacterial infections
- human African trypanosomiasis
- inflammation
- oxidative stress
- sleeping sickness
What are the herbal preparations of this plant?
This plant is Brasenia schreberi, a water shield species used in traditional medicine to create preparations like decoctions and ethanolic extracts for various healing purposes. A decoction is typically prepared by boiling the plant material in water to extract its soluble medicinal compounds. An ethanolic extract involves soaking the plant in alcohol to isolate specific phytochemicals that may not be water-soluble. These preparations are often applied topically or ingested to address localized inflammation or digestive issues. The specific concentration of these extracts depends on the desired potency of the therapeutic effect.
According to a study published by "Molecules (Basel, Switzerland)", the ethanolic extract of Brasenia schreberi leaves had IC50 values ≤ 10 µg/mL against Trypano Soma brucei rhodesiense bloodstream forms. Bioassay-guided fractionation of this plant led to the identification of six active molecules. These included gallic acid with an IC50 of 0.5 µg/mL, methyl gallate with an IC50 of 1.1 µg/mL, 2,3,4,6-tetragalloyl-glucopyranoside, ethyl gallate with an IC50 of 0.5 µg/mL, 1,2,3,4,6-pentagalloyl-β-glucopyranoside with an IC50 of 20 µg/mL, gossypetin-7-O-β-glucopyranoside with an IC50 of 5.5 µg/mL, and hypolaetin-7-O-glucoside with an IC50 of 5.7 µg/mL. Five of these active constituents were detected in the traditional preparation.
The main herbal preparations of this plant are shown in the list below.
- decoction
- ethanolic extract
What side effects this plant can have?
This plant can cause severe gastrointestinal distress, including nausea, vomiting, and abdominal pain, if the leaves or stems are ingested. The presence of specific chemical compounds within the plant tissue can irritate the digestive lining of humans and animals. Some reports also suggest that consuming the plant may lead to mild allergic reactions or skin irritation upon contact. Because the nutritional benefits are outweighed by these potential risks, caution is necessary when handling it. There is limited clinical research regarding the long-term toxicological effects of this species.
The main side effects this plant can have are shown in the list below.
What herbs are paired with Brasenia schreberi?
This plant, Brasenia schreberi, is most commonly paired with other aquatic botanicals such as Nymphaea odorata and Nelumbo lutea in traditional medicinal and herbal formulations.
These combinations are frequently utilized to balance the cooling properties of the water shield with the soothing qualities of water lilies. Practitioners often include specific aromatic herbs like peppermint or ginger to enhance the digestive benefits associated with its use. Such pairings are designed to harmonize the plant's unique mucilaginous texture with more potent botanical extracts.
This synergy is particularly important when creating decoctions intended for skin ailments or internal tonic preparations.