Fly Agaric vs Least Stonewort

Amanita muscaria compared with Nitella confervacea

Key Differences

Fly Agaric is Least Concern while Least Stonewort is Endangered.

Taxonomic Classification

Rank	Fly Agaric	Least Stonewort
Kingdom	Fungi (Fungi)	Plantae (Plants)
Phylum	Basidiomycota (Club Fungi)	Charophyta (Charophyta)
Class	Agaricomycetes (Mushrooms)	Charophyceae (Charophyceae)
Order	Agaricales (Gilled Mushrooms)	Charales (Charales)
Family	Agaricaceae (Agarics)	Characeae
Genus	Amanita (Amanitas)	Nitella
Species	Amanita muscaria	Nitella confervacea

Conservation Status

Fly Agaric

LC — Least Concern

Trend: Stable →

Least Stonewort

EN — Endangered

Physical Characteristics

Attribute	Fly Agaric	Least Stonewort
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).

Least Stonewort

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

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

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.