west Himalayan alder

Names and Synonyms

Common Names

• West Himalayan alder
• Himalayan Alder

Scientific Names

Accepted name

Synonyms

• Clethropsis nitida

Regional and Traditional Names

Sources: Wikidata, Catalogue of Life

Taxonomical Classification

This plant belongs to the kingdom Plantae and the phylum Streptophyta within the class Equisetopsida. As a member of the subclass Magnoliidae and the order Fagales, it is classified under the family Betulaceae. Finally, its specific taxonomic placement is within the genus Alnus.

Sources: The World Checklist of Vascular Plants (WCVP)

Distribution

This plant, known scientifically as Alnus nitida, exhibits a specific geographical range within the Indian Subcontinent. It can be found growing in the mountainous regions of Nepal. Additionally, its natural habitat extends into the territories of Pakistan. The species is also widely distributed throughout the West Himalaya area. Consequently, its presence is closely tied to these particular high-altitude environments.

Sources: The World Checklist of Vascular Plants (WCVP)

Botanical Identification

Ecology

The ecology of Alnus nitida is defined by its specialized adaptation to high-altitude montane environments, where it occupies a distinct ecological niche within temperate and subtropical mountain systems. This species thrives within a specific vertical distribution, maintaining an elevational range that begins at 1000 m AMSL and extends up to a maximum of 2800 m AMSL. Within these altitudinal gradients, the plant often functions as a pioneer species, frequently colonizing riparian zones, disturbed slopes, or areas with high soil moisture. Its presence is typically indicative of specific hydrological conditions and soil nutrient cycling processes, as it plays a crucial role in stabilizing montane landscapes and enhancing soil fertility through its symbiotic relationships.

Elevational range max:

2800 m AMSL

Elevational range min:

1000 m AMSL

Life history

The life history of Alnus nitida is characterized by its nature as a perennial organism, allowing it to persist through multiple growing seasons and establish a stable presence within its ecosystem. As a phanerophyte, its reproductive buds are located on branches well above the ground, a structural adaptation that supports its growth into a woody tree form. This phanerophyte life form ensures that the plant can maintain its structural integrity and continue its developmental cycle over many years, transitioning through various stages of maturity within its perennial lifecycle.

Life form :

phanerophyte

Lifecycle :

perennial

Morphology

The morphology of Alnus nitida is characterized by its classification as a woody tree, exhibiting a robust and self-supporting growth habit. As a non-climbing species, it functions as a self-supporting organism rather than a liana or vine, and it does not display climbing tendencies. The plant is an independent organism, lacking any parasitic requirements, and maintains a terrestrial lifestyle, avoiding both epiphytic and strictly aquatic existence, though it can inhabit semiaquatic environments. Its structural development is defined by its woody nature, providing the necessary stability for its tree-form architecture.

Aquatic :

terrestrial

Climber :

self-supporting

Epiphyte :

terrestrial

Growth form :

tree

Parasite :

independent

Woodiness :

woody

Physiology

The physiology of Alnus nitida is characterized by a specialized metabolic framework designed for efficient carbon assimilation in riparian and moist environments. A defining physiological feature of this species is its photosynthetic pathway, which follows the C3 mechanism. In this pathway, the initial fixation of atmospheric carbon dioxide occurs through the enzyme RuBisCO, resulting in the formation of a three-carbon compound, 3-phosphoglycerate. This C3 photosynthetic strategy is highly effective under the temperate to subtropical conditions where the species typically thrives, allowing for robust growth through direct carboxylation within the mesophyll cells. Furthermore, the physiological profile of Alnus nitida is intrinsically linked to its symbiotic relationship with nitrogen-fixing Frankia bacteria within specialized root nodules. This biological nitrogen fixation complements its photosynthetic processes by ensuring a steady supply of nitrogen, thereby optimizing the synthesis of chlorophyll and photosynthetic enzymes necessary to maintain high metabolic activity and biomass production.

Photosynthetic pathway :

C3

Reproduction

The reproduction of Alnus nitida is characterized by a specific seasonal flowering period that occurs during the latter part of the year. The flowering process typically commences in August and continues through the autumn months, reaching its conclusion in November. This reproductive window is essential for the development of its reproductive structures, which facilitate the subsequent stages of its life cycle.

Flowering time :

Aug

Flowering time :

Nov

Sources: Global Inventory of Floras and Traits (GIFT)

Plant Parts

Alnus nitida has 2 reported plant parts identified across 3 scientific publications and several other databases that are studied for medicinal purposes. The most consistently reported plant part include leaf, fruit.

Leaf

1. Scientific reports
2. Molecules (Basel, Switzerland)

Fruit

1. Molecules (Basel, Switzerland)

Chemicals

Alnus nitida has 4 reported phytochemicals identified across 3 scientific publications and several other databases. The most consistently reported chemicals include 3,7,11,15-TETRAMETHYL-2-HEXADECEN-1-OL, NEOPHYTADIENE, Phytol, VITAMIN E.

3,7,11,15-TETRAMETHYL-2-HEXADECEN-1-OL

1. Molecules (Basel, Switzerland)

NEOPHYTADIENE

1. Molecules (Basel, Switzerland)

Phytol

1. Molecules (Basel, Switzerland)

VITAMIN E

1. Molecules (Basel, Switzerland)

Activities

Alnus nitida has 2 reported activities identified across 3 scientific publications and several other databases. The most consistently reported activities include Analgesic, Antioxidant.

Analgesic

1. Molecules (Basel, Switzerland)

Antioxidant

1. Scientific reports

Conditions

Alnus nitida has 7 reported investigations on conditions identified across 3 scientific publications and several other databases. The most consistently reported conditions include Bacillus subtilis, Escherichia coli, Pseudomonas aeruginosa, Salmonella typhi, Staphylococcus aureus.

Bacillus subtilis

1. Scientific reports

Escherichia coli

1. Scientific reports

Pseudomonas aeruginosa

1. Scientific reports

Salmonella typhi

1. Scientific reports

Staphylococcus aureus

1. Scientific reports

Anti-cholinesterase

1. Scientific reports

Antioxidant

1. Scientific reports

Preparations

Alnus nitida has 4 reported preparations identified across 3 scientific publications and several other databases. The most consistently reported preparations include fruits, leaf extract, leaves, leaves extract.

Fruits

1. Molecules (Basel, Switzerland)

Leaf extract

1. Scientific reports

Leaves

1. Molecules (Basel, Switzerland)

Leaves extract

1. Scientific reports