Gray Alder vs Red Alder

Alnus incana compared with Alnus rubra

Key Differences

• Gray Alder is Least Concern while Red Alder is Not Evaluated.

Taxonomic Classification

Rank	Gray Alder	Red Alder
Kingdom same	Plantae (植物)	Plantae (植物)
Phylum same	Magnoliophyta (被子植物門)	Magnoliophyta (被子植物門)
Class same	Magnoliopsida (モクレン綱)	Magnoliopsida (モクレン綱)
Order same	Fagales (ブナ目)	Fagales (ブナ目)
Family same	Betulaceae	Betulaceae
Genus same	Alnus	Alnus
Species	Alnus incana	Alnus rubra

Evolutionary Relationship

Gray Alder and Red Alder share a common ancestor at the Genus level: Alnus.

Conservation Status

Gray Alder

LC — Least Concern

Red Alder

NE — Not Evaluated

Physical Characteristics

Attribute	Gray Alder	Red Alder
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Gray Alder

Habitat

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

Range

Widely distributed across Asia (Armenia), Europe (10 countries), and North America (United States).

Red Alder

Habitat

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

Range

Widely distributed across Europe (7 countries), North America (Canada), and Oceania and the Pacific (Australia).

Shared Countries

Both species can be found in 6 countries:

🇧🇪 Belgium 🇮🇪 Ireland 🇳🇱 Netherlands 🇳🇴 Norway 🇸🇪 Sweden 🇬🇧 United Kingdom