Brook Floater vs

Alasmidonta varicosa compared with Psathyrella pennata

Key Differences

• Brook Floater is Vulnerable while is Endangered.

Taxonomic Classification

Rank	Brook Floater
Kingdom	Animalia (Animals)	Fungi (Fungi)
Phylum	Mollusca (Mollusks)	Basidiomycota (Club Fungi)
Class	Bivalvia (Bivalvia)	Agaricomycetes (Mushrooms)
Order	Unionida (Unionida)	Agaricales (Gilled Mushrooms)
Family	Unionidae	Psathyrellaceae
Genus	Alasmidonta	Psathyrella
Species	Alasmidonta varicosa	Psathyrella pennata

Conservation Status

Brook Floater

VU — Vulnerable

EN — Endangered

Physical Characteristics

Attribute	Brook Floater
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Brook Floater

Habitat

Native to North America, inhabiting ecosystems characteristic of the region.

Range

Found in United States. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

Habitat

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

Range

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

Brook Floater

The Brook Floater (Alasmidonta varicosa) is a species in the genus Alasmidonta. It is currently classified as Vulnerable on the IUCN Red List. Native to North America, inhabiting ecosystems characteristic of the region.

Psathyrella pennata is a small, fragile agaric fungus in the family Psathyrellaceae, assessed as Endangered (EN). It grows on fire-scorched soil or charred wood in post-burn habitats, making it dependent on natural or managed fire disturbance events. Its endangered status reflects the rarity of appropriate fire-disturbed substrates in managed landscapes.