Erman's Birch

Names and Synonyms

Common Names

• Erman's Birch
• Stone Birch
• Russian rock birch

Scientific Names

Accepted name

Regional and Traditional Names

Sources: Wikidata, Catalogue of Life

Taxonomical Classification

This plant belongs to the kingdom Plantae within the phylum Streptophyta and the class Equisetopsida. It is further classified under the subclass Magnoliidae and the order Fagales. Finally, it is a member of the family Betulaceae and falls under the genus Betula.

Sources: The World Checklist of Vascular Plants (WCVP)

Distribution

This plant is primarily distributed across the expansive territories of Northern Asia. In the region of Siberia, it can be found growing in Buryatiya and Chita. Its presence extends further into the Siberian landscape within the Irkutsk and Yakutiya regions. Additionally, the species is located in the Russian Far East, specifically in the Amur area. Together, these locations define the specific ecological range of this medicinal species.

Sources: The World Checklist of Vascular Plants (WCVP)

Botanical Identification

Ecology

The ecology of Betula ermanii is characterized by its adaptability to diverse and often rugged topographical features, primarily thriving within forest ecosystems and mountainous regions. It is frequently found colonizing stony places where soil may be thin or unstable, demonstrating a resilience to rocky substrates. Additionally, the species exhibits a preference for moisture-rich environments, often positioning itself near rivers and in areas influenced by riparian dynamics. This distribution allows the plant to occupy various niches within high-altitude landscapes, ranging from well-drained slopes to the more humid margins of watercourses.

Habitat :

forest, mountains, rivers, stony places

Life history

The life history of Betula ermanii is characterized by its classification as a phanerophyte, a growth form where the perennating buds are located high above the ground on woody branches, allowing the plant to survive harsh environmental conditions. Within this botanical framework, it exhibits traits consistent with both the phanerophyte and nanophanerophyte categories, reflecting its ability to maintain perennial structures through varying seasonal cycles. As a woody perennial, its life cycle involves the establishment of a robust root system and the development of a permanent trunk and canopy, which enables it to endure long-term climatic fluctuations. The plant's strategy focuses on long-term survival through its elevated buds, which are protected from freezing temperatures and surface disturbances, ensuring continued growth and reproduction over many years.

Life form :

phanerophyte

Morphology

The morphology of Betula ermanii is characterized by its distinct growth form and structural composition, functioning primarily as a self-supporting tree. As a woody species, it possesses a sturdy, lignified structure that allows it to maintain an upright habit without the need for external support. It is not a climber, as it lacks liana or vine-like qualities, remaining entirely self-supporting through its robust trunk and branching system. In terms of its ecological niche and habitat positioning, the plant is strictly terrestrial, lacking any aquatic or semiaquatic adaptations. Furthermore, it operates as an independent organism, showing no parasitic behavior toward other plants, and it is not an epiphyte, as it grows directly in the soil rather than on the surfaces of other vegetation.

Aquatic :

terrestrial

Climber :

self-supporting

Epiphyte :

terrestrial

Growth form :

tree

Parasite :

independent

Woodiness :

woody

Physiology

The physiology of Betula ermanii is characterized by a specialized adaptation to cool, temperate, and often subalpine environments, where its metabolic processes are optimized for high-latitude or high-altitude conditions. A fundamental aspect of its energy acquisition is its photosynthetic pathway, which follows the C3 mechanism. This C3 pathway involves the direct fixation of atmospheric carbon dioxide by the enzyme RuBisCO during the Calvin cycle, a process that is highly efficient in the cooler, moist climates where this species typically thrives, as it avoids the high metabolic costs associated with carbon concentrating mechanisms required in hotter environments. Beyond carbon fixation, the plant's physiology is marked by robust seasonal adaptations, including deciduousness to manage water loss and prevent cellular damage during freezing winter months. Its physiological resilience is further supported by complex carbohydrate metabolism, allowing for the storage of energy reserves in its root and stem systems to facilitate rapid budburst and regrowth during the short growing seasons characteristic of its natural habitat.

Photosynthetic pathway :

C3

Reproduction

The reproduction of Betula ermanii is characterized by a specific seasonal flowering window and the production of lightweight seeds. The flowering process typically commences in May and concludes in June, marking a concentrated period of reproductive activity. The seeds produced during this cycle are remarkably small and lightweight, with a mean seed mass of approximately 0.000805 g. Individual seed weights exhibit slight variations, ranging from a minimum of 0.0007 g (7e-04 g) to a maximum of 0.00091 g, a characteristic that facilitates effective dispersal.

Flowering time :

May

Flowering time :

Jun

Seed mass max:

0.00091 g

Seed mass mean:

0.000805 g

Seed mass min:

7e-04 g

Sources: Global Inventory of Floras and Traits (GIFT)

Plant Parts

Betula ermanii has 1 reported plant parts identified across 1 scientific publications and several other databases that are studied for medicinal purposes. The most consistently reported plant part include stem.

Stem

1. Chemistry & biodiversity

Chemicals

Betula ermanii has 4 reported phytochemicals identified across 1 scientific publications and several other databases. The most consistently reported chemicals include 3beta-Acetoxy-12alpha-hydroxyoleanan-13beta,28-olide, Betulin, Sitosterol, betulinic acid.

3beta-Acetoxy-12alpha-hydroxyoleanan-13beta,28-olide

1. Chemistry & biodiversity

Betulin

1. Dr. Duke

Sitosterol

1. Chemistry & biodiversity

betulinic acid

1. Dr. Duke

Activities

Betula ermanii has 23 reported activities identified across 1 scientific publications and several other databases. The most consistently reported activities include Anthelmintic, AntiHIV, Antibacterial, Anticancer, Anticarcinomic.

Anthelmintic

1. Dr. Duke

AntiHIV

1. Dr. Duke

Antibacterial

1. Dr. Duke

Anticancer

1. Dr. Duke

Anticarcinomic

1. Dr. Duke

Antiedemic

1. Dr. Duke

Antifeedant

1. Dr. Duke

Antiflu

1. Dr. Duke

Antiinflammatory

1. Dr. Duke

Antileukemic

1. Dr. Duke

Conditions

Betula ermanii has 1 reported investigations on conditions identified across 1 scientific publications and several other databases. The most consistently reported conditions include cancer.

Cancer

1. Chemistry & biodiversity

Preparations

Betula ermanii has 1 reported preparations identified across 1 scientific publications and several other databases. The most consistently reported preparations include stem bark.

Stem bark

1. Chemistry & biodiversity