Dune Brittlestem vs Fly Agaric

Psathyrella ammophila compared with Amanita muscaria

Key Differences

• Dune Brittlestem is Endangered while Fly Agaric is Least Concern.

Taxonomic Classification

Rank	Dune Brittlestem	Fly Agaric
Kingdom same	Fungi (mantar)	Fungi (mantar)
Phylum same	Basidiomycota (Bazitli mantarlar)	Basidiomycota (Bazitli mantarlar)
Class same	Agaricomycetes (Mushrooms)	Agaricomycetes (Mushrooms)
Order same	Agaricales (Lamelli mantarlar)	Agaricales (Lamelli mantarlar)
Family	Psathyrellaceae	Agaricaceae (Agarics)
Genus	Psathyrella	Amanita (Amanitas)
Species	Psathyrella ammophila	Amanita muscaria

Evolutionary Relationship

Dune Brittlestem and Fly Agaric share a common ancestor at the Order level: Agaricales. (Lamelli mantarlar)

Conservation Status

Dune Brittlestem

EN — Endangered

Fly Agaric

LC — Least Concern

Trend: Stable →

Physical Characteristics

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

Habitat & Geographic Range

Dune Brittlestem

Habitat

Typically found in forest floors, decomposing wood, and soil ecosystems.

Range

Distributed across Belgium, Denmark, Norway, and Sweden. Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its 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).

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 3 countries:

🇩🇰 Denmark 🇳🇴 Norway 🇸🇪 Sweden