What is the common name for the genus 'Alnus'?

The genus 'Alnus' is commonly known as alder. Alders are deciduous trees and shrubs typically found in wetland areas, and they are characterized by their ability to fix nitrogen in the soil due to a symbiotic relationship with specific bacteria. This trait makes them beneficial for soil health and habitat improvement.

Alders also display distinct features such as catkins and small cones, which aid in their identification. While related to other tree genera, the specific adaptation and characteristics of alders set them apart from other trees like birches, willows, and pines. Understanding the ecological role and biological characteristics of alders helps in recognizing their importance in forest ecosystems and conservation efforts.