Blistered Rock Tripe vs Brook Floater

Umbilicaria hyperborea compared with Alasmidonta varicosa

Key Differences

Blistered Rock Tripe is Extinct while Brook Floater is Vulnerable.

Taxonomic Classification

Rank	Blistered Rock Tripe	Brook Floater
Kingdom	Fungi (Fungi)	Animalia (Animals)
Phylum	Ascomycota (Sac Fungi)	Mollusca (Mollusks)
Class	Lecanoromycetes (Lecanoromycetes)	Bivalvia (Bivalvia)
Order	Umbilicariales (Umbilicariales)	Unionida (Unionida)
Family	Umbilicariaceae	Unionidae
Genus	Umbilicaria	Alasmidonta
Species	Umbilicaria hyperborea	Alasmidonta varicosa

Conservation Status

Blistered Rock Tripe

EX — Extinct

Brook Floater

VU — Vulnerable

Physical Characteristics

Attribute	Blistered Rock Tripe	Brook Floater
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Blistered Rock Tripe

Habitat

Native to Europe and North America, inhabiting ecosystems characteristic of the region.

Range

Distributed across Denmark, Norway, Sweden, 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.

Blistered Rock Tripe

The Blistered Rock Tripe (Umbilicaria hyperborea) is a species in the genus Umbilicaria. It is currently classified as Extinct on the IUCN Red List. Native to Europe and North America, inhabiting ecosystems characteristic of the region.

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.