Brook Floater vs Mealy Shadow Lichen

Alasmidonta varicosa compared with Phaeophyscia orbicularis

Key Differences

Brook Floater is Vulnerable while Mealy Shadow Lichen is Least Concern.

Taxonomic Classification

Rank	Brook Floater	Mealy Shadow Lichen
Kingdom	Animalia (Animals)	Fungi (Fungi)
Phylum	Mollusca (Mollusks)	Ascomycota (Sac Fungi)
Class	Bivalvia (Bivalvia)	Lecanoromycetes (Lecanoromycetes)
Order	Unionida (Unionida)	Caliciales (Caliciales)
Family	Unionidae	Physciaceae
Genus	Alasmidonta	Phaeophyscia
Species	Alasmidonta varicosa	Phaeophyscia orbicularis

Conservation Status

Brook Floater

VU — Vulnerable

Mealy Shadow Lichen

LC — Least Concern

Physical Characteristics

Attribute	Brook Floater	Mealy Shadow 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.

Mealy Shadow Lichen

Habitat

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

Range

Widely distributed across Europe (4 countries), North America (United States), and South America (Colombia).

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.