Fly Agaric vs Giant Elm Bracket

Amanita muscaria compared with Rigidoporus ulmarius

Key Differences

• Fly Agaric is Least Concern while Giant Elm Bracket is Not Evaluated.

Taxonomic Classification

Rank	Fly Agaric	Giant Elm Bracket
Kingdom same	Fungi (Fungi)	Fungi (Fungi)
Phylum same	Basidiomycota (Club Fungi)	Basidiomycota (Club Fungi)
Class same	Agaricomycetes (Mushrooms)	Agaricomycetes (Mushrooms)
Order	Agaricales (Gilled Mushrooms)	Polyporales (Polyporales)
Family	Agaricaceae (Agarics)	Meripilaceae
Genus	Amanita (Amanitas)	Rigidoporus
Species	Amanita muscaria	Rigidoporus ulmarius

Evolutionary Relationship

Fly Agaric and Giant Elm Bracket share a common ancestor at the Class level: Agaricomycetes. (Mushrooms)

Conservation Status

Fly Agaric

LC — Least Concern

Trend: Stable →

Giant Elm Bracket

NE — Not Evaluated

Physical Characteristics

Attribute	Fly Agaric	Giant Elm Bracket
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).

Giant Elm Bracket

Habitat

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

Range

Distributed across Brazil, Norway, and Portugal.

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 3 countries:

🇧🇷 Brazil 🇳🇴 Norway 🇵🇹 Portugal