Brook Floater vs

Alasmidonta varicosa compared with Usnea cornuta

Key Differences

• Brook Floater is Vulnerable while is Near Threatened.

Taxonomic Classification

Rank	Brook Floater
Kingdom	Animalia (Animals)	Fungi (Fungi)
Phylum	Mollusca (moluscos)	Ascomycota (Sac Fungi)
Class	Bivalvia (Bivalvia)	Lecanoromycetes (Lecanoromycetes)
Order	Unionida (Unionida)	Lecanorales (Lecanorales)
Family	Unionidae	Parmeliaceae
Genus	Alasmidonta	Usnea
Species	Alasmidonta varicosa	Usnea cornuta

Conservation Status

Brook Floater

VU — Vulnerable

NT — Near Threatened

Physical Characteristics

Attribute	Brook Floater
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.

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

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

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.

Usnea cornuta es un liquen fruticuloso de la familia Parmeliaceae, evaluado como Casi Amenazado (NT). Forma talos arbustivos y ramificados que cuelgan de ramas y ramitas de árboles, típicamente en entornos forestales húmedos. Como todas las especies de Usnea, es muy sensible a la contaminación del aire, particularmente al dióxido de azufre, lo que la convierte en un bioindicador útil de la calidad del aire.