Bladder Fern vs Coastal Mushoom

Cystopteris fragilis compared with Agaricus litoralis

Key Differences

Bladder Fern is Not Evaluated while Coastal Mushoom is Least Concern.

Taxonomic Classification

Rank	Bladder Fern	Coastal Mushoom
Kingdom	Plantae (Plants)	Fungi (Fungi)
Phylum	Tracheophyta	Basidiomycota (Club Fungi)
Class	Polypodiopsida (Polypodiopsida)	Agaricomycetes (Mushrooms)
Order	Polypodiales (Polypodiales)	Agaricales (Gilled Mushrooms)
Family	Cystopteridaceae	Agaricaceae (Agarics)
Genus	Cystopteris	Agaricus (Button Mushrooms)
Species	Cystopteris fragilis	Agaricus litoralis

Conservation Status

Bladder Fern

NE — Not Evaluated

Coastal Mushoom

LC — Least Concern

Physical Characteristics

Attribute	Bladder Fern	Coastal Mushoom
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

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).

Coastal Mushoom

Habitat

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

Range

Distributed across Belgium, Denmark, Norway, and Sweden.

Bladder Fern

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

Agaricus litoralis, the coastal mushroom, is a saprotrophic agaric fungus in the family Agaricaceae occurring in sand dunes, coastal grassland, and sandy soil habitats along the coasts of northwestern Europe, with confirmed records from Belgium, Denmark, Norway, and Sweden. The genus Agaricus contains the familiar cultivated button mushroom (A. bisporus) along with hundreds of wild species, and members are characterized by a ring on the stem and browning, discoloring, or non-discoloring flesh when cut, features used in field identification. Agaricus litoralis is a medium-sized mushroom producing white to cream-colored caps 4–10 centimeters across with pinkish then dark brown gills and a stout stem with a double ring, fruiting in sand dune hollows and the grassy margins of coastal habitats from summer through autumn. The specific epithet litoralis refers directly to its coastal habitat preference. As a saprotroph, it decomposes organic matter in the sandy soil substrate, releasing nutrients back into the ecosystem. The species is classified as Least Concern by the IUCN, being relatively widespread in suitable coastal sandy habitat across northwestern Europe. Like many coastal fungi, it is specifically adapted to the nutrient-poor, well-drained, alkaline conditions of stabilized sand dune systems.