Bladder Fern vs Fly Agaric

Cystopteris fragilis compared with Amanita muscaria

Key Differences

Bladder Fern is Not Evaluated while Fly Agaric is Least Concern.

Taxonomic Classification

Rank	Bladder Fern	Fly Agaric
Kingdom	Plantae (พืช)	Fungi (เห็ดรา)
Phylum	Tracheophyta	Basidiomycota (Club Fungi)
Class	Polypodiopsida (Polypodiopsida)	Agaricomycetes (Mushrooms)
Order	Polypodiales (Polypodiales)	Agaricales (Gilled Mushrooms)
Family	Cystopteridaceae	Agaricaceae (Agarics)
Genus	Cystopteris	Amanita (Amanitas)
Species	Cystopteris fragilis	Amanita muscaria

Conservation Status

Bladder Fern

NE — Not Evaluated

Fly Agaric

LC — Least Concern

Trend: Stable →

Physical Characteristics

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

Habitat & Geographic Range

Bladder Fern

Habitat

Typically found in moist, shaded forest floors and tropical canopies.

Range

Widely distributed across Asia (Taiwan), Europe (6 countries), North America (Canada, United States), and South America (Colombia).

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).

Bladder Fern

The Bladder Fern (Cystopteris fragilis) is a species in the genus Cystopteris. Typically found in moist, shaded forest floors and tropical canopies.

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.