Brown Cobblestone Lichen vs Pixie Foam

Acarospora fuscata compared with Stereocaulon pileatum

Key Differences

• Brown Cobblestone Lichen is Least Concern while Pixie Foam is Critically Endangered.

Taxonomic Classification

Rank	Brown Cobblestone Lichen	Pixie Foam
Kingdom same	Fungi (Fungi)	Fungi (Fungi)
Phylum same	Ascomycota (Sac Fungi)	Ascomycota (Sac Fungi)
Class same	Lecanoromycetes (Lecanoromycetes)	Lecanoromycetes (Lecanoromycetes)
Order	Acarosporales (Acarosporales)	Lecanorales (Lecanorales)
Family	Acarosporaceae	Stereocaulaceae
Genus	Acarospora	Stereocaulon
Species	Acarospora fuscata	Stereocaulon pileatum

Evolutionary Relationship

Brown Cobblestone Lichen and Pixie Foam share a common ancestor at the Class level: Lecanoromycetes. (Lecanoromycetes)

Conservation Status

Brown Cobblestone Lichen

LC — Least Concern

Pixie Foam

CR — Critically Endangered

Physical Characteristics

Attribute	Brown Cobblestone Lichen	Pixie Foam
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Brown Cobblestone Lichen

Habitat

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

Range

Distributed across Denmark, Norway, Portugal, and United States.

Pixie Foam

Habitat

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

Range

Distributed across Denmark, Norway, Portugal, Sweden, and United States. Currently classified as Critically Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Brown Cobblestone Lichen

The Brown Cobblestone Lichen (Acarospora fuscata) is a species in the genus Acarospora. It is currently classified as Least Concern on the IUCN Red List. Native to Europe and North America, inhabiting ecosystems characteristic of the region.

Shared Countries

Both species can be found in 4 countries:

🇩🇰 Denmark 🇳🇴 Norway 🇵🇹 Portugal 🇺🇸 United States