Fly Agaric vs Quadrangular Peaclam

Amanita muscaria compared with Euglesa milium

Taxonomic Classification

Rank	Fly Agaric	Quadrangular Peaclam
Kingdom	Fungi (Fungi)	Animalia (Animals)
Phylum	Basidiomycota (Club Fungi)	Mollusca (Mollusks)
Class	Agaricomycetes (Mushrooms)	Bivalvia (Bivalvia)
Order	Agaricales (Gilled Mushrooms)	Sphaeriida (Sphaeriida)
Family	Agaricaceae (Agarics)	Sphaeriidae
Genus	Amanita (Amanitas)	Euglesa
Species	Amanita muscaria	Euglesa milium

Conservation Status

Fly Agaric

LC — Least Concern

Trend: Stable →

Quadrangular Peaclam

LC — Least Concern

Physical Characteristics

Attribute	Fly Agaric	Quadrangular Peaclam
Diet	Decomposer	—
Average Lifespan	1 years	—
Average Length	20 cm	—
Average Weight	100 g	—

Habitat & Geographic Range

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).

Quadrangular Peaclam

Habitat

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

Range

Distributed across Belgium, Denmark, and United States.

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.