Brook Floater vs Common Eyelash

Alasmidonta varicosa compared with Scutellinia scutellata

Key Differences

Brook Floater is Vulnerable while Common Eyelash is Least Concern.

Taxonomic Classification

Rank	Brook Floater	Common Eyelash
Kingdom	Animalia (Animals)	Fungi (Fungi)
Phylum	Mollusca (Mollusks)	Ascomycota (Sac Fungi)
Class	Bivalvia (Bivalvia)	Pezizomycetes (Pezizomycetes)
Order	Unionida (Unionida)	Pezizales (Pezizales)
Family	Unionidae	Pyronemataceae
Genus	Alasmidonta	Scutellinia
Species	Alasmidonta varicosa	Scutellinia scutellata

Conservation Status

Brook Floater

VU — Vulnerable

Common Eyelash

LC — Least Concern

Physical Characteristics

Attribute	Brook Floater	Common Eyelash
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.

Common Eyelash

Habitat

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

Range

Widely distributed across Asia (Taiwan), Europe (5 countries), North America (United States), and South America (Brazil).

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.

Common Eyelash

The Common Eyelash (<em>Scutellinia scutellata</em>) is a small cup fungus belonging to the genus Scutellinia within the family Pyronemataceae. It is recognised by its distinctive scarlet to bright red disc-shaped fruiting body, typically measuring just a few millimetres across, and fringed with dark brown hair-like structures resembling eyelashes, from which its common name derives. This species is native to Asia and Europe and North America, and typically inhabits decomposing wood, moist soil, and other organic substrates in humid environments. Its geographic range is wide, with confirmed records across Asia including Taiwan, Europe including Belgium, Denmark, Norway, and Portugal, North America including the United States, and South America including Brazil. <em>Scutellinia scutellata</em> is assessed as Least Concern on the IUCN Red List, reflecting its broad distribution and apparent abundance. Biological traits such as lifespan, size, and specific dietary habits remain poorly documented in the scientific literature, though as a saprotrophic fungus it typically obtains nutrients by decomposing dead organic matter.