Brittle Bladderfern vs Brook Alder

Cystopteris tenuis compared with Alnus maritima

Key Differences

• Brittle Bladderfern is Not Evaluated while Brook Alder is Endangered.

Taxonomic Classification

Rank	Brittle Bladderfern	Brook Alder
Kingdom same	Plantae (растения)	Plantae (растения)
Phylum	Tracheophyta	Magnoliophyta (магнолиофиты)
Class	Polypodiopsida (папоротниковые)	Magnoliopsida (Dicots)
Order	Polypodiales (многоножковые)	Fagales (букоцветные)
Family	Cystopteridaceae	Betulaceae
Genus	Cystopteris	Alnus
Species	Cystopteris tenuis	Alnus maritima

Evolutionary Relationship

Brittle Bladderfern and Brook Alder share a common ancestor at the Kingdom level: Plantae. (растения)

Conservation Status

Brittle Bladderfern

NE — Not Evaluated

Brook Alder

EN — Endangered

Physical Characteristics

Attribute	Brittle Bladderfern	Brook Alder
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Brittle Bladderfern

Habitat

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

Range

Distributed across Canada and United States.

Brook Alder

Habitat

Typically found in diverse terrestrial habitats from tropical forests to temperate regions.

Range

Distributed across Belgium, France, Netherlands, and United Kingdom. Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Brittle Bladderfern

The Brittle Bladderfern (Cystopteris tenuis) is a species in the genus Cystopteris. Typically found in moist, shaded forest floors and tropical canopies.

Brook Alder

The Brook Alder (Alnus maritima) is a species in the genus Alnus. It is currently classified as Endangered on the IUCN Red List. Typically found in diverse terrestrial habitats from tropical forests to temperate regions.