Brook Alder vs Ferny Azolla

Alnus maritima compared with Azolla pinnata

Key Differences

• Brook Alder is Endangered while Ferny Azolla is Least Concern.

Taxonomic Classification

Rank	Brook Alder	Ferny Azolla
Kingdom same	Plantae (Plants)	Plantae (Plants)
Phylum	Magnoliophyta (Flowering Plants)	Tracheophyta
Class	Magnoliopsida (Dicots)	Polypodiopsida (Polypodiopsida)
Order	Fagales (Beeches & Oaks)	Salviniales (Salviniales)
Family	Betulaceae	Salviniaceae
Genus	Alnus	Azolla
Species	Alnus maritima	Azolla pinnata

Evolutionary Relationship

Brook Alder and Ferny Azolla share a common ancestor at the Kingdom level: Plantae. (Plants)

Conservation Status

Brook Alder

EN — Endangered

Ferny Azolla

LC — Least Concern

Physical Characteristics

Attribute	Brook Alder	Ferny Azolla
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

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.

Ferny Azolla

Habitat

Found across multiple habitat types including deserts and xeric shrublands, tropical and subtropical moist broadleaf forests, and flooded grasslands and savannas spanning the Palearctic and Oceanian realms.

Range

Widely distributed across Africa (4 countries), Asia (Indonesia, Singapore, Taiwan), North America (Mexico, United States), and Oceania and the Pacific (Marshall Islands, New Zealand, Tuvalu).

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.