Beech Tarcrust vs Fly Agaric

Biscogniauxia nummularia compared with Amanita muscaria

Key Differences

• Beech Tarcrust is Data Deficient while Fly Agaric is Least Concern.

Taxonomic Classification

Rank	Beech Tarcrust	Fly Agaric
Kingdom same	Fungi (Fungi)	Fungi (Fungi)
Phylum	Ascomycota (Sac Fungi)	Basidiomycota (Club Fungi)
Class	Sordariomycetes (Sordariomycetes)	Agaricomycetes (Mushrooms)
Order	Xylariales (Xylariales)	Agaricales (Gilled Mushrooms)
Family	Graphostromataceae	Agaricaceae (Agarics)
Genus	Biscogniauxia	Amanita (Amanitas)
Species	Biscogniauxia nummularia	Amanita muscaria

Evolutionary Relationship

Beech Tarcrust and Fly Agaric share a common ancestor at the Kingdom level: Fungi. (Fungi)

Conservation Status

Beech Tarcrust

DD — Data Deficient

Fly Agaric

LC — Least Concern

Trend: Stable →

Physical Characteristics

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

Habitat & Geographic Range

Beech Tarcrust

Habitat

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

Range

Widely distributed across Asia (Taiwan), Europe (7 countries), and South America (Brazil).

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).

Beech Tarcrust

The Beech Tarcrust (Biscogniauxia nummularia) is a species in the genus Biscogniauxia. Its conservation status is listed as Data Deficient, indicating insufficient data for assessment. Native to Asia and Europe and South America, inhabiting ecosystems characteristic of the region.

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 5 countries:

🇧🇷 Brazil 🇩🇰 Denmark 🇳🇴 Norway 🇵🇹 Portugal 🇸🇪 Sweden