Boreal Button Lichen vs Hotson’s Brush-tailed Mouse

Buellia disciformis compared with Calomyscus hotsoni

Key Differences

• Boreal Button Lichen is Critically Endangered while Hotson’s Brush-tailed Mouse is Least Concern.

Taxonomic Classification

Rank	Boreal Button Lichen	Hotson’s Brush-tailed Mouse
Kingdom	Fungi (Fungi)	Animalia (Animals)
Phylum	Ascomycota (Sac Fungi)	Chordata (Chordates)
Class	Lecanoromycetes (Lecanoromycetes)	Mammalia (Mammals)
Order	Caliciales (Caliciales)	Rodentia (Rodents)
Family	Caliciaceae	Calomyscidae
Genus	Buellia	Calomyscus
Species	Buellia disciformis	Calomyscus hotsoni

Conservation Status

Boreal Button Lichen

CR — Critically Endangered

Hotson’s Brush-tailed Mouse

LC — Least Concern

Physical Characteristics

Attribute	Boreal Button Lichen	Hotson’s Brush-tailed Mouse
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Boreal Button Lichen

Habitat

Inhabits temperate broadleaf and mixed forests and Mediterranean forests and woodlands within the Palearctic biogeographic realm. Populations are also found in montane and highland environments at higher elevations.

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.

Hotson’s Brush-tailed Mouse

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Boreal Button Lichen

The Boreal Button Lichen (Buellia disciformis) is a species in the genus Buellia. It is currently classified as Critically Endangered on the IUCN Red List. Inhabits temperate broadleaf and mixed forests and Mediterranean forests and woodlands within the Palearctic biogeographic realm. Populations are also found in montane and highland environments at higher elevations.