vs Polar bear

Clitocybe strigosa compared with Ursus maritimus

Key Differences

is Least Concern while Polar bear is Vulnerable.

Taxonomic Classification

Rank		Polar bear
Kingdom	Fungi (Fungi)	Animalia (Animals)
Phylum	Basidiomycota (Club Fungi)	Chordata (Chordates)
Class	Agaricomycetes (Mushrooms)	Mammalia (Mammals)
Order	Agaricales (Gilled Mushrooms)	Carnivora (Carnivorans)
Family	Tricholomataceae	Ursidae (Bears)
Genus	Clitocybe	Ursus (Bears)
Species	Clitocybe strigosa	Ursus maritimus

Conservation Status

LC — Least Concern

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 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 strigosa is an agaric fungus in the family Tricholomataceae found in temperate and boreal European forests. The specific epithet strigosa refers to a stiff, bristly texture suggesting the cap surface or stipe may bear fine, erect hairs or fibrils distinguishing it from smoother relatives. It inhabits woodland floors, grassy forest margins, and clearings, fruiting in autumn when moisture conditions favor fruiting body development. The general morphology follows the Clitocybe pattern: a depressed to funnel-shaped cap with decurrent gills and a central stipe, in pale to greyish-buff tones. As a saprotrophic fungus, C. strigosa decomposes leaf litter, woody debris, and soil organic matter, contributing to the carbon and nitrogen cycling that sustains forest ecosystems. The genus Clitocybe encompasses dozens of European species, many of which require careful microscopic examination and consideration of substrate, odor, and spore features for reliable identification. Documentation of less common species like C. strigosa contributes to understanding the full scope of European fungal biodiversity.

Polar bear

The largest land carnivore on Earth, polar bears can exceed 700 kg and are found across Arctic sea ice from Canada to Russia. Highly specialized marine mammals that rely on sea ice to hunt ringed and bearded seals. Excellent swimmers capable of covering vast distances in open water. Listed as Vulnerable, with populations under severe pressure from rapid Arctic sea ice loss due to climate change.