Brook Floater vs Birken-Gürtelfuß

Alasmidonta varicosa compared with Cortinarius bivelus

Key Differences

Brook Floater is Vulnerable while Birken-Gürtelfuß is Data Deficient.

Taxonomic Classification

Rank	Brook Floater	Birken-Gürtelfuß
Kingdom	Animalia (Tier)	Fungi (Pilze)
Phylum	Mollusca (Weichtiere)	Basidiomycota (Ständerpilze)
Class	Bivalvia (Muscheln)	Agaricomycetes (Mushrooms)
Order	Unionida (Unionida)	Agaricales (Champignonartige)
Family	Unionidae	Cortinariaceae
Genus	Alasmidonta	Cortinarius
Species	Alasmidonta varicosa	Cortinarius bivelus

Conservation Status

Brook Floater

VU — Vulnerable

Birken-Gürtelfuß

DD — Data Deficient

Physical Characteristics

Attribute	Brook Floater	Birken-Gürtelfuß
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.

Birken-Gürtelfuß

Habitat

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

Range

Distributed across Belgium, Denmark, Norway, Sweden, and United States.

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.

Birken-Gürtelfuß

Cortinarius bivelus is a mycorrhizal agaric fungus in the family Cortinariaceae, assessed as Data Deficient (DD). Like other members of the genus, it forms ectomycorrhizal associations with forest trees and produces a characteristic cobweb-like cortina veil when young. Insufficient data on its distribution and population size prevent a reliable conservation assessment.