Fly Agaric vs Sargasso Weed

Amanita muscaria compared with Sargassum natans

Key Differences

Fly Agaric is Least Concern while Sargasso Weed is Not Evaluated.

Taxonomic Classification

Rank	Fly Agaric	Sargasso Weed
Kingdom	Fungi (Fungi)	Chromista (Chromista)
Phylum	Basidiomycota (Club Fungi)	Ochrophyta (Ochrophyta)
Class	Agaricomycetes (Mushrooms)	Phaeophyceae (Phaeophyceae)
Order	Agaricales (Gilled Mushrooms)	Fucales (Fucales)
Family	Agaricaceae (Agarics)	Sargassaceae
Genus	Amanita (Amanitas)	Sargassum
Species	Amanita muscaria	Sargassum natans

Conservation Status

Fly Agaric

LC — Least Concern

Trend: Stable →

Sargasso Weed

NE — Not Evaluated

Physical Characteristics

Attribute	Fly Agaric	Sargasso Weed
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).

Sargasso Weed

Habitat

Native to Africa and Europe and South America, inhabiting ecosystems characteristic of the region.

Range

Distributed across Brazil, Norway, and Sao Tome and Principe.

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.