Brook Floater vs Slender Parasol

Alasmidonta varicosa compared with Macrolepiota mastoidea

Key Differences

• Brook Floater is Vulnerable while Slender Parasol is Near Threatened.

Taxonomic Classification

Rank	Brook Floater	Slender Parasol
Kingdom	Animalia (Animals)	Fungi (Fungi)
Phylum	Mollusca (Mollusks)	Basidiomycota (Club Fungi)
Class	Bivalvia (Bivalvia)	Agaricomycetes (Mushrooms)
Order	Unionida (Unionida)	Agaricales (Gilled Mushrooms)
Family	Unionidae	Agaricaceae (Agarics)
Genus	Alasmidonta	Macrolepiota
Species	Alasmidonta varicosa	Macrolepiota mastoidea

Conservation Status

Brook Floater

VU — Vulnerable

Slender Parasol

NT — Near Threatened

Physical Characteristics

Attribute	Brook Floater	Slender Parasol
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.

Slender Parasol

Habitat

Typically found in forest floors, decomposing wood, and soil ecosystems.

Range

Widely distributed across Asia (Taiwan), Europe (4 countries), and South America (Brazil). 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.