Fly Agaric vs Poison Ivy Rust

Amanita muscaria compared with Pileolaria brevipes

Key Differences

Fly Agaric is Least Concern while Poison Ivy Rust is Not Evaluated.

Taxonomic Classification

Rank	Fly Agaric	Poison Ivy Rust
Kingdom	Fungi (Fungi)	Animalia (Animals)
Phylum	Basidiomycota (Club Fungi)	Annelida (Segmented Worms)
Class	Agaricomycetes (Mushrooms)	Polychaeta (Polychaeta)
Order	Agaricales (Gilled Mushrooms)	Sabellida (Sabellida)
Family	Agaricaceae (Agarics)	Serpulidae
Genus	Amanita (Amanitas)	Pileolaria
Species	Amanita muscaria	Pileolaria brevipes

Conservation Status

Fly Agaric

LC — Least Concern

Trend: Stable →

Poison Ivy Rust

NE — Not Evaluated

Physical Characteristics

Attribute	Fly Agaric	Poison Ivy Rust
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).

Poison Ivy Rust

Habitat

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

Range

Distributed across Taiwan and United States.

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.