Mountain Hemlock vs Western Hemlock-spruce

Tsuga mertensiana compared with Tsuga heterophylla

Taxonomic Classification

Rank	Mountain Hemlock	Western Hemlock-spruce
Kingdom same	Plantae (Plants)	Plantae (Plants)
Phylum same	Coniferophyta (Conifers)	Coniferophyta (Conifers)
Class same	Pinopsida (Conifers)	Pinopsida (Conifers)
Order same	Pinales (Pines & Allies)	Pinales (Pines & Allies)
Family same	Pinaceae (Pine Family)	Pinaceae (Pine Family)
Genus same	Tsuga	Tsuga
Species	Tsuga mertensiana	Tsuga heterophylla

Evolutionary Relationship

Mountain Hemlock and Western Hemlock-spruce share a common ancestor at the Genus level: Tsuga.

Conservation Status

Mountain Hemlock

NE — Not Evaluated

Western Hemlock-spruce

NE — Not Evaluated

Physical Characteristics

Attribute	Mountain Hemlock	Western Hemlock-spruce
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Mountain Hemlock

Habitat

Typically found in temperate and boreal forests, often at higher elevations.

Range

Distributed across Canada, Denmark, Iceland, Norway, and Sweden.

Western Hemlock-spruce

Habitat

Typically found in temperate and boreal forests, often at higher elevations.

Range

Widely distributed across Asia (Taiwan, Turkey), Europe (10 countries), and North America (Canada).

Shared Countries

Both species can be found in 5 countries:

🇨🇦 Canada 🇩🇰 Denmark 🇮🇸 Iceland 🇳🇴 Norway 🇸🇪 Sweden