Brook Alder vs Dark Gray Boulder Lichen

Alnus maritima compared with Porpidia cinereoatra

Key Differences

• Brook Alder is Endangered while Dark Gray Boulder Lichen is Near Threatened.

Taxonomic Classification

Rank	Brook Alder	Dark Gray Boulder Lichen
Kingdom	Plantae (Plants)	Fungi (Fungi)
Phylum	Magnoliophyta (Flowering Plants)	Ascomycota (Sac Fungi)
Class	Magnoliopsida (Dicots)	Lecanoromycetes (Lecanoromycetes)
Order	Fagales (Beeches & Oaks)	Lecideales (Lecideales)
Family	Betulaceae	Lecideaceae
Genus	Alnus	Porpidia
Species	Alnus maritima	Porpidia cinereoatra

Conservation Status

Brook Alder

EN — Endangered

Dark Gray Boulder Lichen

NT — Near Threatened

Physical Characteristics

Attribute	Brook Alder	Dark Gray Boulder Lichen
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.

Dark Gray Boulder Lichen

Habitat

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

Range

Distributed across Denmark, Norway, Portugal, 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.