Brook Floater vs Lesser Scalewort

Alasmidonta varicosa compared with Frullania microphylla

Key Differences

• Brook Floater is Vulnerable while Lesser Scalewort is Least Concern.

Taxonomic Classification

Rank	Brook Floater	Lesser Scalewort
Kingdom	Animalia (Animals)	Plantae (Plants)
Phylum	Mollusca (Mollusks)	Marchantiophyta (liverwort)
Class	Bivalvia (Bivalvia)	Jungermanniopsida (Jungermanniopsida)
Order	Unionida (Unionida)	Porellales (Porellales)
Family	Unionidae	Frullaniaceae
Genus	Alasmidonta	Frullania
Species	Alasmidonta varicosa	Frullania microphylla

Conservation Status

Brook Floater

VU — Vulnerable

Lesser Scalewort

LC — Least Concern

Physical Characteristics

Attribute	Brook Floater	Lesser Scalewort
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.

Lesser Scalewort

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

Distributed across Norway and Portugal.

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.