Brook Floater vs Rancid Greyling

Alasmidonta varicosa compared with Tephrocybe rancida

Key Differences

• Brook Floater is Vulnerable while Rancid Greyling is Least Concern.

Taxonomic Classification

Rank	Brook Floater	Rancid Greyling
Kingdom	Animalia (Animals)	Fungi (Fungi)
Phylum	Mollusca (Mollusks)	Basidiomycota (Club Fungi)
Class	Bivalvia (Bivalvia)	Agaricomycetes (Mushrooms)
Order	Unionida (Unionida)	Agaricales (Gilled Mushrooms)
Family	Unionidae	Lyophyllaceae
Genus	Alasmidonta	Tephrocybe
Species	Alasmidonta varicosa	Tephrocybe rancida

Conservation Status

Brook Floater

VU — Vulnerable

Rancid Greyling

LC — Least Concern

Physical Characteristics

Attribute	Brook Floater	Rancid Greyling
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.

Rancid Greyling

Habitat

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

Range

Distributed across Denmark and Norway.

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.