Adder'S Fern vs Brook Floater

Polypodium vulgare compared with Alasmidonta varicosa

Key Differences

Adder'S Fern is Least Concern while Brook Floater is Vulnerable.

Taxonomic Classification

Rank	Adder'S Fern	Brook Floater
Kingdom	Plantae (Plants)	Animalia (Animals)
Phylum	Tracheophyta	Mollusca (Mollusks)
Class	Polypodiopsida (Polypodiopsida)	Bivalvia (Bivalvia)
Order	Polypodiales (Polypodiales)	Unionida (Unionida)
Family	Polypodiaceae	Unionidae
Genus	Polypodium	Alasmidonta
Species	Polypodium vulgare	Alasmidonta varicosa

Conservation Status

Adder'S Fern

LC — Least Concern

Brook Floater

VU — Vulnerable

Physical Characteristics

Attribute	Adder'S Fern	Brook Floater
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Adder'S Fern

Habitat

Typically found in moist, shaded forest floors and tropical canopies.

Range

Found across Europe (7 countries) and North America (United States).

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.

Adder'S Fern

The Adder'S Fern (Polypodium vulgare) is a species in the genus Polypodium. It is currently classified as Least Concern on the IUCN Red List. This species inhabits Typically found in moist, shaded forest floors and tropical canopies, found across Belgium, Denmark, Finland, Iceland, and Norway.

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.