Bristly Beard Lichen vs Brook Floater

Usnea hirta compared with Alasmidonta varicosa

Key Differences

Bristly Beard Lichen is Least Concern while Brook Floater is Vulnerable.

Taxonomic Classification

Rank	Bristly Beard Lichen	Brook Floater
Kingdom	Fungi (Fungi)	Animalia (Animals)
Phylum	Ascomycota (Sac Fungi)	Mollusca (Mollusks)
Class	Lecanoromycetes (Lecanoromycetes)	Bivalvia (Bivalvia)
Order	Lecanorales (Lecanorales)	Unionida (Unionida)
Family	Parmeliaceae	Unionidae
Genus	Usnea	Alasmidonta
Species	Usnea hirta	Alasmidonta varicosa

Conservation Status

Bristly Beard Lichen

LC — Least Concern

Brook Floater

VU — Vulnerable

Physical Characteristics

Attribute	Bristly Beard Lichen	Brook Floater
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Bristly Beard 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

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.

Bristly Beard Lichen

The Bristly Beard Lichen (Usnea hirta) is a species in the genus Usnea. It is currently classified as Least Concern 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.