Botanical Overview
Alnus rubra is a flowering plant in the Betulaceae family. The traditional uses of this species reflect its genuine medicinal value, validated by generations of practical experience. The birch family (Betulaceae) includes trees and shrubs with simple, alternate leaves with serrated margins and prominent stipules. The flowers are arranged in catkins, and the fruits are small nuts or samaras. The bark of many species contains phenolic compounds with antiseptic properties.
General Description
Alnus rubra, the red alder, is a deciduous broadleaf tree native to western North America (Alaska, Yukon, British Columbia, Washington, Oregon, California, Idaho and Montana).
Family Context
The Betulaceae family is widely distributed in the Northern Hemisphere. Notable medicinal members include:
- Betula alba — 17 documented uses
- Cherry Birch — 16 documented uses
- Black Alder — 10 documented uses
- Alnus rugosa — 5 documented uses
Geographic Distribution
Alnus rubra has been recorded in 10 countries and territories worldwide, including Canada, Germany, Spain, United Kingdom, Ireland, and others.
Traditional Uses
Alnus rubra has been traditionally used for digestive health, respiratory conditions, and skin and wound care, among other applications.
Digestive health.
- Dyspepsia
For digestive complaints, the herb is typically prepared as a tea or decoction taken before meals. The bitter compounds stimulate digestive secretions and improve nutrient absorption. Some traditions use the powdered root or leaves in small doses as a stomachic tonic.
Respiratory conditions.
- Asthma
Respiratory conditions are addressed through steam inhalation of the herb’s vapors or internal use as a warm tea. The hot infusion acts as an expectorant, helping to loosen phlegm and clear congestion. Some traditions combine it with honey for coughs.
Skin and wound care.
- Sore
- Burn
- Eczema
- Wound
For skin conditions, the fresh or dried plant is applied topically as a poultice, wash, or compress. A strong decoction can be used to clean wounds and sores. The antimicrobial properties help prevent infection while promoting tissue repair.
Active Compounds
Phytochemical research has identified 1 compound in this species: betulin.