Alnus glutinosa
Alnus glutinosa · Accepted scientific name
Scientific literature: Very Sparse (10 studies) · ★☆☆☆☆
Alnus glutinosa, commonly known as the European alder, is a versatile plant species recognized for its significant therapeutic potential. The leaves and various aerial parts contain bioactive compounds such as Oregonin and ellagic acid, which drive its diverse medicinal properties. Through various preparations like aqueous or ethyl acetate extracts, this plant demonstrates potent antioxidant, antimicrobial, and astringent activities. It is frequently utilized in traditional practices to aid in wound healing and to serve as a febrifuge or cathartic. Whether using extracts from the leaves or the female catkins, Alnus glutinosa remains a valuable subject in pharmacological study.
- Synonyms
- Betula Alnus Var. Glutinosa · Betula Glutinosa · 1 more
- Common names
- Not available
- Family
- Betulaceae
- Distribution
- Not available
- Plant Parts
- Leaf
Classification
Common Names
Alnus glutinosa is a versatile species known widely by its common English name, Alder. This plant is recognized across various cultures and languages, appearing as Alberniz europeu in certain linguistic contexts. In Spanish-speaking regions, it is frequently referred to as Aliso común, reflecting its widespread presence. The species also holds specific regional identities, such as the name Adi qızılağac used in other parts of the world. Even in more localized settings, it may be called Alenter, demonstrating the many ways this single tree is identified globally.
Sources: Catalogue of Life (COL)
Synonyms
Alnus glutinosa is a botanical subject frequently identified through various taxonomic synonyms in scientific literature. Researchers may encounter this species listed under the name Betula alnus subsp. glutinosa depending on the classification system used. Similarly, it is sometimes documented as Betula alnus var. glutinosa in older or specialized botanical texts. The name Betula glutinosa also serves as a recognized synonym for this particular plant. Understanding these varying nomenclatures is essential for ensuring accuracy when studying the relationships within this genus.
Sources: The World Checklist of Vascular Plants (WCVP)
Taxonomy
Alnus glutinosa is a remarkable member of the kingdom Plantae that plays a vital role in its natural ecosystem. Within the biological hierarchy, this species belongs to the class Equisetopsida and the order Fagales. It is further classified under the family Betulaceae, showcasing its close botanical connections to other birch-like trees. Specifically, it is identified by its unique placement within the genus Alnus. Understanding these taxonomic relationships provides essential insight into the evolutionary history of this distinctive plant.
| Rank | Classification |
|---|---|
| Kingdom | Plantae |
| Phylum | Streptophyta |
| Class | Equisetopsida |
| Subclass | Magnoliidae |
| Order | Fagales |
| Family | Betulaceae |
| Genus | Alnus |
Sources: The World Checklist of Vascular Plants (WCVP)
Distribution
Geographic Regions
Alnus glutinosa exhibits a diverse geographical range that extends across several key regions. This species is notably found within the Macaronesia archipelago, including the Azores. Its presence is also well-established throughout much of the African continent. Specifically, it thrives across Northern Africa, spanning the territories of Algeria, Libya, Morocco, and Tunisia. This broad distribution highlights the plant's ability to adapt to various Mediterranean and Atlantic environments.
Sources: The World Checklist of Vascular Plants (WCVP)
Identification
Morphology
Alnus glutinosa is a robust, self-supporting species that primarily adopts a tree growth form. Depending on its environment, this plant can reach a minimum height of 3 meters. In many established landscapes, it typically maintains a more substantial stature with a minimum height of 9.6 meters. As it reaches full maturity, the tree can achieve a maximum height of 25 meters. This impressive range of sizes allows it to play a versatile role within its natural ecosystem.
Sources: Global Inventory of Floras and Traits (GIFT)
Biological Activities
Alnus glutinosa, commonly known as the European alder, possesses a diverse range of biological activities that support its long history in traditional medicine. Scientific investigations have confirmed that its bark extracts exhibit potent antioxidant properties, helping to combat oxidative stress and reduce reactive oxygen species. Furthermore, the plant demonstrates significant antimicrobial activity, particularly against Gram-positive pathogens, which may explain its effectiveness in wound healing. Beyond these roles, the bark is traditionally utilized for its astringent, cathartic, and emetic effects. These combined therapeutic characteristics highlight the potential of Alnus glutinosa as a valuable resource in modern phytotherapy and skin disorder treatments.
Compounds
Alnus glutinosa, commonly known as the black alder, is a versatile tree species widely distributed across Europe and parts of Asia. Recent phytochemical investigations into its stem bark have revealed a rich profile of bioactive compounds. Notably, the extract from this bark is characterized by a high concentration of diarylheptanoids. Among these constituents, oregonin serves as the predominant compound, making up over 74% of the stem bark extract. This high content of oregonin contributes significantly to the plant's impressive antioxidant and anti-inflammatory properties.
Conditions
Alnus glutinosa exhibits significant therapeutic potential by aiding in wound healing through its enhanced wound closure properties. The plant also demonstrates potent antimicrobial activity, effectively treating bacterial pathogens such as Escherichia coli, Klebsiella pneumoniae, and Salmonella abony. Furthermore, extracts from its cones contain compounds like glutinoin that influence antioxidative activity as measured by SC₅₀ values. These diverse biological activities validate its traditional use in medicine for managing both infections and physical injuries.
Preparations
Alnus glutinosa is prepared as aqueous extracts from its bark to evaluate antioxidant, antimicrobial, and wound-healing properties. Research also demonstrates that Alnus glutinosa is prepared as extracts from its aerial parts to assess bioactive substance content. Specifically, Alnus glutinosa is prepared as an extract using female catkins, which shows high antioxidant activity. Furthermore, Alnus glutinosa is prepared as methanol extracts that demonstrate significant radical scavenging and reducing capacity. In contrast, Alnus glutinosa is prepared as ethyl acetate extracts, though these show only minimal antioxidant activity.
Parts used
Alnus glutinosa holds significant medicinal potential, particularly through the bioactive properties found within its leaf. Recent scientific investigations have focused on evaluating the antimicrobial activities of both aqueous and ethanolic leaf extracts from this species. The study revealed that ethanolic extracts demonstrate superior effectiveness against various bacteria and yeast compared to aqueous versions. These findings suggest that the plant's leaf contains potent substances capable of inhibiting several types of microorganisms. Ultimately, this antimicrobial strength may explain why Alnus glutinosa is traditionally used in folk medicine for wound healing.