Bitter Tooth vs Brook Floater

Hydnellum scabrosum compared with Alasmidonta varicosa

Key Differences

• Bitter Tooth is Near Threatened while Brook Floater is Vulnerable.

Taxonomic Classification

Rank	Bitter Tooth	Brook Floater
Kingdom	Fungi (Fungi)	Animalia (Animals)
Phylum	Basidiomycota (Club Fungi)	Mollusca (Mollusks)
Class	Agaricomycetes (Mushrooms)	Bivalvia (Bivalvia)
Order	Thelephorales (Thelephorales)	Unionida (Unionida)
Family	Bankeraceae	Unionidae
Genus	Hydnellum	Alasmidonta
Species	Hydnellum scabrosum	Alasmidonta varicosa

Conservation Status

Bitter Tooth

NT — Near Threatened

Brook Floater

VU — Vulnerable

Physical Characteristics

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

Habitat & Geographic Range

Bitter Tooth

Habitat

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

Range

Distributed across Denmark, Norway, and Sweden. Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

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.

Bitter Tooth

The Bitter Tooth (Hydnellum scabrosum) is a species in the genus Hydnellum. It is currently classified as Near Threatened 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.