Dwarf Rock-bristle vs Fly Agaric

Seligeria pusilla compared with Amanita muscaria

Key Differences

Dwarf Rock-bristle is Vulnerable while Fly Agaric is Least Concern.

Taxonomic Classification

Rank	Dwarf Rock-bristle	Fly Agaric
Kingdom	Plantae (Plants)	Fungi (Fungi)
Phylum	Bryophyta	Basidiomycota (Club Fungi)
Class	Bryopsida (Bryopsida)	Agaricomycetes (Mushrooms)
Order	Grimmiales (Grimmiales)	Agaricales (Gilled Mushrooms)
Family	Seligeriaceae	Agaricaceae (Agarics)
Genus	Seligeria	Amanita (Amanitas)
Species	Seligeria pusilla	Amanita muscaria

Conservation Status

Dwarf Rock-bristle

VU — Vulnerable

Fly Agaric

LC — Least Concern

Trend: Stable →

Physical Characteristics

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

Habitat & Geographic Range

Dwarf Rock-bristle

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

Distributed across Luxembourg, Norway, and Sweden. Currently classified as Vulnerable 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).

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.