Blue Roundhead vs Brown Rat

Stropharia caerulea compared with Rattus norvegicus

Key Differences

• Blue Roundhead is Not Evaluated while Brown Rat is Least Concern.

Taxonomic Classification

Rank	Blue Roundhead	Brown Rat
Kingdom	Fungi (Fungi)	Animalia (Animals)
Phylum	Basidiomycota (Club Fungi)	Chordata (Chordates)
Class	Agaricomycetes (Mushrooms)	Mammalia (Mammals)
Order	Agaricales (Gilled Mushrooms)	Rodentia (Rodents)
Family	Strophariaceae	Muridae (Mice & Rats)
Genus	Stropharia	Rattus
Species	Stropharia caerulea	Rattus norvegicus

Conservation Status

Blue Roundhead

NE — Not Evaluated

Brown Rat

LC — Least Concern

Physical Characteristics

Attribute	Blue Roundhead	Brown Rat
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Blue Roundhead

Habitat

Typically found in forest floors, decomposing wood, and soil ecosystems.

Range

Distributed across Belgium, Norway, and United States.

Brown Rat

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, tropical and subtropical dry broadleaf forests, and tropical and subtropical grasslands and savannas, among 10 distinct biome types. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Africa (11 countries), Asia (15 countries), Europe (41 countries), North America (16 countries), Oceania and the Pacific (10 countries), and South America (10 countries).

Blue Roundhead

The Blue Roundhead (Stropharia caerulea) is a species in the genus Stropharia. Typically found in forest floors, decomposing wood, and soil ecosystems.

Brown Rat

Brown Rat (Rattus norvegicus) is classified as Least Concern (LC) on the IUCN Red List. Widespread and abundant across its range, with stable populations and no immediate conservation concerns.

Shared Countries

Both species can be found in 3 countries:

🇧🇪 Belgium 🇳🇴 Norway 🇺🇸 United States