Brook Floater vs Field Earthstar

Alasmidonta varicosa compared with Geastrum campestre

Key Differences

• Brook Floater is Vulnerable while Field Earthstar is Critically Endangered.

Taxonomic Classification

Rank	Brook Floater	Field Earthstar
Kingdom	Animalia (Animals)	Fungi (Fungi)
Phylum	Mollusca (Mollusks)	Basidiomycota (Club Fungi)
Class	Bivalvia (Bivalvia)	Agaricomycetes (Mushrooms)
Order	Unionida (Unionida)	Geastrales (Geastrales)
Family	Unionidae	Geastraceae
Genus	Alasmidonta	Geastrum
Species	Alasmidonta varicosa	Geastrum campestre

Conservation Status

Brook Floater

VU — Vulnerable

Field Earthstar

CR — Critically Endangered

Physical Characteristics

Attribute	Brook Floater	Field Earthstar
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.

Field Earthstar

Habitat

Found across multiple habitat types including temperate broadleaf and mixed forests, temperate coniferous forests, and Mediterranean forests and woodlands within the Palearctic biogeographic realm. Populations are also found in montane and highland environments at higher elevations.

Range

Found across Europe (6 countries). Currently classified as Critically Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

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.