vs Fly Agaric

Botryotinia calthae compared with Amanita muscaria

Key Differences

• is Not Evaluated while Fly Agaric is Least Concern.

Taxonomic Classification

Rank		Fly Agaric
Kingdom same	Fungi (เห็ดรา)	Fungi (เห็ดรา)
Phylum	Ascomycota (Sac Fungi)	Basidiomycota (Club Fungi)
Class	Leotiomycetes (Leotiomycetes)	Agaricomycetes (Mushrooms)
Order	Helotiales (Helotiales)	Agaricales (Gilled Mushrooms)
Family	Sclerotiniaceae	Agaricaceae (Agarics)
Genus	Botryotinia	Amanita (Amanitas)
Species	Botryotinia calthae	Amanita muscaria

Evolutionary Relationship

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

Conservation Status

NE — Not Evaluated

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 Denmark and Norway.

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).

Botryotinia calthae is an ascomycete fungus in the family Sclerotiniaceae, the sexual stage of a Botrytis-like pathogen that infects marsh marigold (Caltha palustris) in wetland habitats. It forms sclerotia in infected plant tissue that persist in soil to initiate future infections. As a necrotrophic pathogen, it kills host tissue and then feeds on the resulting dead material.

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:

🇩🇰 Denmark 🇳🇴 Norway