vs Polar bear

Clitocybe barbularum compared with Ursus maritimus

Key Differences

is Data Deficient while Polar bear is Vulnerable.

Taxonomic Classification

Rank		Polar bear
Kingdom	Fungi (真菌界)	Animalia (动物界)
Phylum	Basidiomycota (担子菌门)	Chordata (脊索动物门)
Class	Agaricomycetes (傘菌綱)	Mammalia (哺乳動物)
Order	Agaricales (伞菌目)	Carnivora (食肉目)
Family	Tricholomataceae	Ursidae (Bears)
Genus	Clitocybe	Ursus (Bears)
Species	Clitocybe barbularum	Ursus maritimus

Conservation Status

DD — Data Deficient

Polar bear

VU — Vulnerable

Population: ~26.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute		Polar bear
Diet	—	Carnivore
Average Lifespan	—	25 years
Average Length	—	2.4 m
Average Weight	—	450.0 kg

Habitat & Geographic Range

Habitat

Typically found in forest floors, decomposing wood, and soil ecosystems.

Range

Distributed across Belgium, Denmark, Norway, and Sweden.

Polar bear

Habitat

Found across multiple habitat types including temperate broadleaf and mixed forests, temperate coniferous forests, and boreal forests and taiga, among 4 distinct biome types within the Palearctic biogeographic realm. Populations are also found in montane and highland environments at higher elevations.

Range

Found in Norway. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

Clitocybe barbularum is a small agaric fungus in the family Tricholomataceae occurring in Northern European temperate and boreal habitats, primarily documented from Scandinavian countries. It grows in grassy areas, woodland clearings, forest margins, and occasionally on disturbed ground, fruiting in late summer through autumn. The fruiting bodies are relatively small and inconspicuous with the characteristic Clitocybe form: a depressed to shallowly funnel-shaped cap, often whitish to pale greyish or buff, with crowded, decurrent gills and a slender stipe. The specific epithet barbularum suggests an association with particular microhabitats or substrates. As a saprotrophic fungus, C. barbularum plays a role in decomposing plant litter and returning nutrients to the soil ecosystem. The broader Clitocybe genus contains both edible and mildly toxic species, and smaller pale species are approached cautiously by foragers. This species reflects the high diversity of macrofungi in Scandinavian landscapes, where boreal and mixed forest systems support exceptional fungal biodiversity.