Bitter Scalewort vs Brook Floater

Porella arboris-vitae compared with Alasmidonta varicosa

Taxonomic Classification

Rank	Bitter Scalewort	Brook Floater
Kingdom	Plantae (Plants)	Animalia (Animals)
Phylum	Marchantiophyta (liverwort)	Mollusca (Mollusks)
Class	Jungermanniopsida (Jungermanniopsida)	Bivalvia (Bivalvia)
Order	Porellales (Porellales)	Unionida (Unionida)
Family	Porellaceae	Unionidae
Genus	Porella	Alasmidonta
Species	Porella arboris-vitae	Alasmidonta varicosa

Conservation Status

Bitter Scalewort

VU — Vulnerable

Brook Floater

VU — Vulnerable

Physical Characteristics

Attribute	Bitter Scalewort	Brook Floater
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Bitter Scalewort

Habitat

Native to Asia and Europe, inhabiting ecosystems characteristic of the region.

Range

Found across Asia (Taiwan) and Europe (5 countries). Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its 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.

Bitter Scalewort

The Bitter Scalewort (Porella arboris-vitae) is a species in the genus Porella. It is currently classified as Vulnerable on the IUCN Red List. Native to Asia and Europe, 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.