Birch Marble vs Pixie Foam

Apotomis betuletana compared with Stereocaulon pileatum

Key Differences

• Birch Marble is Least Concern while Pixie Foam is Critically Endangered.

Taxonomic Classification

Rank	Birch Marble	Pixie Foam
Kingdom	Animalia (动物界)	Fungi (真菌界)
Phylum	Arthropoda (节肢动物门)	Ascomycota (子囊菌门)
Class	Insecta (昆蟲綱)	Lecanoromycetes (茶漬綱)
Order	Lepidoptera (鱗翅目)	Lecanorales (茶漬目)
Family	Tortricidae	Stereocaulaceae
Genus	Apotomis	Stereocaulon
Species	Apotomis betuletana	Stereocaulon pileatum

Conservation Status

Birch Marble

LC — Least Concern

Pixie Foam

CR — Critically Endangered

Physical Characteristics

Attribute	Birch Marble	Pixie Foam
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Birch Marble

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Belgium, Denmark, Norway, and Sweden.

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.

Birch Marble

The Birch Marble (Apotomis betuletana) is a species in the genus Apotomis. It is currently classified as Least Concern on the IUCN Red List. Typically found in virtually all terrestrial and freshwater habitats.

Shared Countries

Both species can be found in 3 countries:

🇩🇰 Denmark 🇳🇴 Norway 🇸🇪 Sweden