Bear'S Head Tooth vs Fly Agaric

Hericium americanum compared with Amanita muscaria

Key Differences

• Bear'S Head Tooth is Not Evaluated while Fly Agaric is Least Concern.

Taxonomic Classification

Rank	Bear'S Head Tooth	Fly Agaric
Kingdom same	Fungi (Fungi)	Fungi (Fungi)
Phylum same	Basidiomycota (Club Fungi)	Basidiomycota (Club Fungi)
Class same	Agaricomycetes (Mushrooms)	Agaricomycetes (Mushrooms)
Order	Russulales (Russulales)	Agaricales (Gilled Mushrooms)
Family	Hericiaceae	Agaricaceae (Agarics)
Genus	Hericium	Amanita (Amanitas)
Species	Hericium americanum	Amanita muscaria

Evolutionary Relationship

Bear'S Head Tooth and Fly Agaric share a common ancestor at the Class level: Agaricomycetes. (Mushrooms)

Conservation Status

Bear'S Head Tooth

NE — Not Evaluated

Fly Agaric

LC — Least Concern

Trend: Stable →

Physical Characteristics

Attribute	Bear'S Head Tooth	Fly Agaric
Diet	—	Decomposer
Average Lifespan	—	1 years
Average Length	—	20 cm
Average Weight	—	100 g

Habitat & Geographic Range

Bear'S Head Tooth

Habitat

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

Range

Found in United States.

Fly Agaric

Habitat

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

Range

Widely distributed across Europe (4 countries), North America (United States), Oceania and the Pacific (New Zealand), and South America (Brazil, Chile, Colombia).

Bear'S Head Tooth

The Bear'S Head Tooth (Hericium americanum) is a species in the genus Hericium. Typically found in forest floors, decomposing wood, and soil ecosystems.

Fly Agaric

Among the most iconic and recognizable fungi on Earth, fly agaric mushrooms display striking red caps with white flecked warts across boreal forests of the Northern Hemisphere. Despite their fairy-tale appearance, they contain potent psychoactive compounds including muscimol and ibotenic acid and are moderately toxic. They form critical mycorrhizal symbioses with birch, pine, and spruce trees, exchanging mineral nutrients for carbon and playing essential roles in boreal forest nutrient cycling.

Shared Countries

Both species can be found in 1 countries:

🇺🇸 United States