Caucasian Alder vs

Alnus subcordata compared with Pyrenula nitida

Key Differences

• Caucasian Alder is Least Concern while is Endangered.

Taxonomic Classification

Rank	Caucasian Alder
Kingdom	Plantae (Plants)	Fungi (Fungi)
Phylum	Magnoliophyta (Flowering Plants)	Ascomycota (Sac Fungi)
Class	Magnoliopsida (Dicots)	Eurotiomycetes (Eurotiomycetes)
Order	Fagales (Beeches & Oaks)	Pyrenulales (Pyrenulales)
Family	Betulaceae	Pyrenulaceae
Genus	Alnus	Pyrenula
Species	Alnus subcordata	Pyrenula nitida

Conservation Status

Caucasian Alder

LC — Least Concern

EN — Endangered

Physical Characteristics

Attribute	Caucasian Alder
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Caucasian Alder

Habitat

Typically found in diverse terrestrial habitats from tropical forests to temperate regions.

Habitat

Native to Europe and North America, inhabiting ecosystems characteristic of the region.

Range

Distributed across Denmark, Norway, Portugal, Sweden, and United States. Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Caucasian Alder

The Caucasian Alder (Alnus subcordata) is a species in the genus Alnus. It is currently classified as Least Concern on the IUCN Red List. Typically found in diverse terrestrial habitats from tropical forests to temperate regions.

Pyrenula nitida is a corticolous crustose lichen producing a smooth, glossy olive-green to brown thallus with embedded, flask-shaped perithecia on smooth bark of ancient broadleaf trees in humid Atlantic woodland. It is considered a flagship indicator species for long-continuity, old-growth woodland in western Europe. Endangered, this lichen is severely threatened by the loss of veteran trees and ancient woodland habitats.