Brook Floater vs Craighead’s Noddingcaps

Alasmidonta varicosa compared with Triphora craigheadii

Key Differences

• Brook Floater is Vulnerable while Craighead’s Noddingcaps is Endangered.

Taxonomic Classification

Rank	Brook Floater	Craighead’s Noddingcaps
Kingdom	Animalia (Animals)	Plantae (Plants)
Phylum	Mollusca (Mollusks)	Magnoliophyta (Flowering Plants)
Class	Bivalvia (Bivalvia)	Liliopsida (Monocots)
Order	Unionida (Unionida)	Asparagales (Asparagales)
Family	Unionidae	Orchidaceae
Genus	Alasmidonta	Triphora
Species	Alasmidonta varicosa	Triphora craigheadii

Conservation Status

Brook Floater

VU — Vulnerable

Craighead’s Noddingcaps

EN — Endangered

Physical Characteristics

Attribute	Brook Floater	Craighead’s Noddingcaps
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.

Craighead’s Noddingcaps

Habitat

Typically found in grasslands, wetlands, forests, and cultivated landscapes.

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.