Brook Floater vs Spectacular Rustgill

Alasmidonta varicosa compared with Gymnopilus junonius

Key Differences

• Brook Floater is Vulnerable while Spectacular Rustgill is Not Evaluated.

Taxonomic Classification

Rank	Brook Floater	Spectacular Rustgill
Kingdom	Animalia (Animals)	Fungi (Fungi)
Phylum	Mollusca (Mollusks)	Basidiomycota (Club Fungi)
Class	Bivalvia (Bivalvia)	Agaricomycetes (Mushrooms)
Order	Unionida (Unionida)	Agaricales (Gilled Mushrooms)
Family	Unionidae	Hymenogastraceae
Genus	Alasmidonta	Gymnopilus
Species	Alasmidonta varicosa	Gymnopilus junonius

Conservation Status

Brook Floater

VU — Vulnerable

Spectacular Rustgill

NE — Not Evaluated

Physical Characteristics

Attribute	Brook Floater	Spectacular Rustgill
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.

Spectacular Rustgill

Habitat

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

Range

Distributed across Belgium, Norway, Portugal, and Taiwan.

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.