Birch Polypore vs Brook Floater

Fomitopsis betulina compared with Alasmidonta varicosa

Key Differences

Birch Polypore is Least Concern while Brook Floater is Vulnerable.

Taxonomic Classification

Rank	Birch Polypore	Brook Floater
Kingdom	Fungi (Fungi)	Animalia (Animals)
Phylum	Basidiomycota (Club Fungi)	Mollusca (Mollusks)
Class	Agaricomycetes (Mushrooms)	Bivalvia (Bivalvia)
Order	Polyporales (Polyporales)	Unionida (Unionida)
Family	Fomitopsidaceae	Unionidae
Genus	Fomitopsis	Alasmidonta
Species	Fomitopsis betulina	Alasmidonta varicosa

Conservation Status

Birch Polypore

LC — Least Concern

Brook Floater

VU — Vulnerable

Physical Characteristics

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

Habitat & Geographic Range

Birch Polypore

Habitat

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

Range

Distributed across Denmark and United States.

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.

Birch Polypore

The Birch Polypore (Fomitopsis betulina) is a species in the genus Fomitopsis. It is currently classified as Least Concern on the IUCN Red List. Typically found in forest floors, decomposing wood, and soil ecosystems.

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.