Alpine Bladder-fern vs Polynesian rat

Cystopteris alpina compared with Rattus exulans

Key Differences

• Alpine Bladder-fern is Near Threatened while Polynesian rat is Least Concern.

Taxonomic Classification

Rank	Alpine Bladder-fern	Polynesian rat
Kingdom	Plantae (растения)	Animalia (животные)
Phylum	Tracheophyta	Chordata (хордовые)
Class	Polypodiopsida (папоротниковые)	Mammalia (млекопитающие)
Order	Polypodiales (многоножковые)	Rodentia (грызуны)
Family	Cystopteridaceae	Muridae (Mice & Rats)
Genus	Cystopteris	Rattus
Species	Cystopteris alpina	Rattus exulans

Conservation Status

Alpine Bladder-fern

NT — Near Threatened

Polynesian rat

LC — Least Concern

Physical Characteristics

Attribute	Alpine Bladder-fern	Polynesian rat
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Alpine Bladder-fern

Habitat

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

Range

Distributed across Norway and Sweden. Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

Polynesian rat

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, tropical and subtropical dry broadleaf forests, and tropical and subtropical coniferous forests, among 4 distinct biome types spanning the Australasia and Indomalayan realms. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Asia (6 countries), Europe (United Kingdom), North America (United States), Oceania and the Pacific (11 countries), and South America (Chile).

Alpine Bladder-fern

The Alpine Bladder-fern (Cystopteris alpina) is a species in the genus Cystopteris. It is currently classified as Near Threatened on the IUCN Red List. Typically found in moist, shaded forest floors and tropical canopies. Distributed across Norway and Sweden. Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.