Brook Floater vs Old-Man’S Beard Lichen

Alasmidonta varicosa compared with Usnea angulata

Key Differences

• Brook Floater is Vulnerable while Old-Man’S Beard Lichen is Not Evaluated.

Taxonomic Classification

Rank	Brook Floater	Old-Man’S Beard Lichen
Kingdom	Animalia (Animals)	Fungi (Fungi)
Phylum	Mollusca (Mollusks)	Ascomycota (Sac Fungi)
Class	Bivalvia (Bivalvia)	Lecanoromycetes (Lecanoromycetes)
Order	Unionida (Unionida)	Lecanorales (Lecanorales)
Family	Unionidae	Parmeliaceae
Genus	Alasmidonta	Usnea
Species	Alasmidonta varicosa	Usnea angulata

Conservation Status

Brook Floater

VU — Vulnerable

Old-Man’S Beard Lichen

NE — Not Evaluated

Physical Characteristics

Attribute	Brook Floater	Old-Man’S Beard 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.

Old-Man’S Beard Lichen

Habitat

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

Range

Distributed across Colombia, Norway, 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.

Shared Countries

Both species can be found in 1 countries:

🇺🇸 United States