Black Stone Flower vs Brook Alder

Parmotrema perlatum compared with Alnus maritima

Key Differences

• Black Stone Flower is Least Concern while Brook Alder is Endangered.

Taxonomic Classification

Rank	Black Stone Flower	Brook Alder
Kingdom	Fungi (Fungi)	Plantae (Plants)
Phylum	Ascomycota (Sac Fungi)	Magnoliophyta (Flowering Plants)
Class	Lecanoromycetes (Lecanoromycetes)	Magnoliopsida (Dicots)
Order	Lecanorales (Lecanorales)	Fagales (Beeches & Oaks)
Family	Parmeliaceae	Betulaceae
Genus	Parmotrema	Alnus
Species	Parmotrema perlatum	Alnus maritima

Conservation Status

Black Stone Flower

LC — Least Concern

Brook Alder

EN — Endangered

Physical Characteristics

Attribute	Black Stone Flower	Brook Alder
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Black Stone Flower

Habitat

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

Range

Widely distributed across Europe (4 countries), North America (United States), and South America (Colombia).

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.

Black Stone Flower

The Black Stone Flower (Parmotrema perlatum) is a species in the genus Parmotrema. It is currently classified as Least Concern on the IUCN Red List. Native to Europe and North America and South America, inhabiting ecosystems characteristic of the region.

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.