Bristlecone Fir vs Clouded Agaric

Abies bracteata compared with Clitocybe nebularis

Key Differences

• Bristlecone Fir is Near Threatened while Clouded Agaric is Least Concern.

Taxonomic Classification

Rank	Bristlecone Fir	Clouded Agaric
Kingdom	Plantae (Plants)	Fungi (Fungi)
Phylum	Coniferophyta (Conifers)	Basidiomycota (Club Fungi)
Class	Pinopsida (Conifers)	Agaricomycetes (Mushrooms)
Order	Pinales (Pines & Allies)	Agaricales (Gilled Mushrooms)
Family	Pinaceae (Pine Family)	Tricholomataceae
Genus	Abies	Clitocybe
Species	Abies bracteata	Clitocybe nebularis

Conservation Status

Bristlecone Fir

NT — Near Threatened

Clouded Agaric

LC — Least Concern

Physical Characteristics

Attribute	Bristlecone Fir	Clouded Agaric
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Bristlecone Fir

Habitat

Typically found in temperate and boreal forests, often at higher elevations.

Clouded Agaric

Habitat

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

Range

Distributed across Belgium, Norway, Sweden, Taiwan, and United States.

Bristlecone Fir

The Bristlecone Fir (Abies bracteata) is a species in the genus Abies. It is currently classified as Near Threatened on the IUCN Red List. Typically found in temperate and boreal forests, often at higher elevations.

Clouded Agaric

The clouded agaric (Clitocybe nebularis, syn. Lepista nebularis) is a large, robust saprotrophic mushroom in the family Tricholomataceae found across temperate broadleaved and mixed forests of Europe and North America. It produces pale grey to buff fruiting bodies with broad, wavy caps up to 20 cm diameter, crowded, slightly decurrent gills, and a stout stipe, typically emerging in large fairy rings or scattered groups in autumn woodland settings. The common name 'clouded' refers to the greyish, misty coloration of the cap surface. Though historically eaten in parts of Europe and considered edible when thoroughly cooked, C. nebularis is now known to contain toxic compounds and a heat-labile gastrointestinal toxin that causes illness in some individuals, and it is associated with documented poisoning cases. Its strong mealy odor is distinctive. The species is widespread and common across European deciduous forests, fruiting reliably in autumn and forming an important component of the saprotrophic fungal community responsible for decomposing accumulated leaf litter and organic matter in temperate forest ecosystems.