vs Fly Agaric

Exobasidium splendidum compared with Amanita muscaria

Taxonomic Classification

Rank		Fly Agaric
Kingdom same	Fungi (Fungi)	Fungi (Fungi)
Phylum same	Basidiomycota (Club Fungi)	Basidiomycota (Club Fungi)
Class	Exobasidiomycetes (Exobasidiomycetes)	Agaricomycetes (Mushrooms)
Order	Exobasidiales (Exobasidiales)	Agaricales (Gilled Mushrooms)
Family	Exobasidiaceae	Agaricaceae (Agarics)
Genus	Exobasidium	Amanita (Amanitas)
Species	Exobasidium splendidum	Amanita muscaria

Evolutionary Relationship

and Fly Agaric share a common ancestor at the Phylum level: Basidiomycota. (Club Fungi)

Conservation Status

LC — Least Concern

Fly Agaric

LC — Least Concern

Trend: Stable →

Physical Characteristics

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

Habitat & Geographic Range

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

Distributed across Belgium, Norway, and Sweden.

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).

Exobasidium splendidum is a parasitic basidiomycete fungus that forms galls and hypertrophied growths on the leaves and stems of host plants in the heath family. It inhabits boreal and montane habitats where Ericaceae shrubs such as Arctostaphylos grow. This parasitic fungus deforms host plant tissue to extract nutrients during its reproductive phase.

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 2 countries:

🇳🇴 Norway 🇸🇪 Sweden