Brook Alder vs Opposite Stonewort

Alnus maritima compared with Chara contraria

Key Differences

• Brook Alder is Endangered while Opposite Stonewort is Near Threatened.

Taxonomic Classification

Rank	Brook Alder	Opposite Stonewort
Kingdom same	Plantae (Plants)	Plantae (Plants)
Phylum	Magnoliophyta (Flowering Plants)	Charophyta (Charophyta)
Class	Magnoliopsida (Dicots)	Charophyceae (Charophyceae)
Order	Fagales (Beeches & Oaks)	Charales (Charales)
Family	Betulaceae	Characeae
Genus	Alnus	Chara
Species	Alnus maritima	Chara contraria

Evolutionary Relationship

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

Conservation Status

Brook Alder

EN — Endangered

Opposite Stonewort

NT — Near Threatened

Physical Characteristics

Attribute	Brook Alder	Opposite Stonewort
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.

Opposite Stonewort

Habitat

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

Range

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

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.