False Oat-Grass Smut vs Fly Agaric

Urocystis avenae-elatioris compared with Amanita muscaria

Key Differences

• False Oat-Grass Smut is Not Evaluated while Fly Agaric is Least Concern.

Taxonomic Classification

Rank	False Oat-Grass Smut	Fly Agaric
Kingdom same	Fungi (Fungi)	Fungi (Fungi)
Phylum same	Basidiomycota (Club Fungi)	Basidiomycota (Club Fungi)
Class	Ustilaginomycetes (Ustilaginomycetes)	Agaricomycetes (Mushrooms)
Order	Urocystidales (Urocystidales)	Agaricales (Gilled Mushrooms)
Family	Urocystidaceae	Agaricaceae (Agarics)
Genus	Urocystis	Amanita (Amanitas)
Species	Urocystis avenae-elatioris	Amanita muscaria

Evolutionary Relationship

False Oat-Grass Smut and Fly Agaric share a common ancestor at the Phylum level: Basidiomycota. (Club Fungi)

Conservation Status

False Oat-Grass Smut

NE — Not Evaluated

Fly Agaric

LC — Least Concern

Trend: Stable →

Physical Characteristics

Attribute	False Oat-Grass Smut	Fly Agaric
Diet	—	Decomposer
Average Lifespan	—	1 years
Average Length	—	20 cm
Average Weight	—	100 g

Habitat & Geographic Range

False Oat-Grass Smut

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).

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.