Alnus

Also known as Alder, alder genus

thumb|right|Female alder catkins after shedding their seeds thumb|right|Alnus serrulata male catkins

AI overview

Alnus is a genus of trees and shrubs commonly known as alders, which produce distinctive cone-like catkins and are found in forests and wetlands across the Northern Hemisphere and South America. These plants are ecologically important because they form relationships with nitrogen-fixing bacteria that enrich soil, making them valuable for forest ecosystems and land restoration efforts.

AI-generated from the Wikipedia summary — may contain errors.

Species

Alnus

GENUS

KingdomPlantae
PhylumTracheophyta
ClassMagnoliopsida
OrderFagales
FamilyBetulaceae

Observations recorded1,572,005

General: Only one genus, Alnus, occurs in South America.&nbsp Use: trees and shrubs, and soil nitrification (Alnus). Appearance: margin (Alnus and Carpinus). Fruit: in cone-like structure (Alnus Mill.), ovoid and subtended

via GBIF · Kew POWO

Research

1,330 papers

The Genus Alnus, A Comprehensive Outline of Its Chemical Constituents and Biological Activities.ReviewMolecules (Basel, Switzerland) · 2017

~11 min read

Article

19 sections

Contents

Description
Phylogeny
Classification
Subgenus ''Alnus''
Subgenus ''Clethropsis''
Subgenus ''Alnobetula''
Not assigned to a subgenus
Species names with uncertain taxonomic status
Hybrids
Fossil record
Etymology
Ecology
Nitrogen fixation and succession of woodland species
Parasites
Uses
Culture
References
Further reading
External links

thumb|right|Female alder catkins after shedding their seeds thumb|right|Alnus serrulata male catkins

Alders are trees of the genus Alnus in the birch family Betulaceae. The genus includes about 35 species of monoecious trees and shrubs, a few reaching a large size, distributed throughout the north temperate zone with a few species extending into Central America, as well as the northern and southern Andes.