Brook Floater vs Grayish Button Lichen

Alasmidonta varicosa compared with Diplotomma alboatrum

Key Differences

Brook Floater is Vulnerable while Grayish Button Lichen is Least Concern.

Taxonomic Classification

Rank	Brook Floater	Grayish Button Lichen
Kingdom	Animalia (Animals)	Fungi (Fungi)
Phylum	Mollusca (Mollusks)	Ascomycota (Sac Fungi)
Class	Bivalvia (Bivalvia)	Lecanoromycetes (Lecanoromycetes)
Order	Unionida (Unionida)	Caliciales (Caliciales)
Family	Unionidae	Caliciaceae
Genus	Alasmidonta	Diplotomma
Species	Alasmidonta varicosa	Diplotomma alboatrum

Conservation Status

Brook Floater

VU — Vulnerable

Grayish Button Lichen

LC — Least Concern

Physical Characteristics

Attribute	Brook Floater	Grayish Button Lichen
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.

Grayish Button Lichen

Habitat

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

Range

Distributed across Denmark, Norway, Portugal, 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.