Clustered Mushroom vs Pavement Mushroom

Agaricus cappellianus compared with Agaricus bitorquis

Key Differences

• Clustered Mushroom is Not Evaluated while Pavement Mushroom is Least Concern.

Taxonomic Classification

Rank	Clustered Mushroom	Pavement Mushroom
Kingdom same	Fungi (菌界)	Fungi (菌界)
Phylum same	Basidiomycota (担子菌門)	Basidiomycota (担子菌門)
Class same	Agaricomycetes (真正担子菌綱)	Agaricomycetes (真正担子菌綱)
Order same	Agaricales (ハラタケ目)	Agaricales (ハラタケ目)
Family same	Agaricaceae (Agarics)	Agaricaceae (Agarics)
Genus same	Agaricus (Button Mushrooms)	Agaricus (Button Mushrooms)
Species	Agaricus cappellianus	Agaricus bitorquis

Evolutionary Relationship

Clustered Mushroom and Pavement Mushroom share a common ancestor at the Genus level: Agaricus. (Button Mushrooms)

Conservation Status

Clustered Mushroom

NE — Not Evaluated

Pavement Mushroom

LC — Least Concern

Physical Characteristics

Attribute	Clustered Mushroom	Pavement Mushroom
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Clustered Mushroom

Habitat

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

Pavement Mushroom

Habitat

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

Range

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

Clustered Mushroom

Agaricus cappellianus is a saprotrophic agaric fungus in the family Agaricaceae, the family containing the cultivated button mushroom (A. bisporus). Like other members of the genus Agaricus, A. cappellianus produces a cap with free gills that start out white or pink and darken to brown or blackish-brown as the spores mature. The stipe bears an annulus (ring) and is separate from the cap at maturity. A. cappellianus is known primarily from Europe, where it grows in grassy habitats, woodland edges, and gardens. The genus Agaricus is large, with hundreds of species globally, and field identification can be challenging. Important identification characters include cap color and texture, flesh-bruising reactions (yellowing or reddening), smell (anise-like vs. phenolic), spore color and size, and stipe characteristics. Some Agaricus species are edible and prized, while others contain phenolic compounds that cause gastrointestinal upset. Formal IUCN conservation status has not been assessed for A. cappellianus. The species has not been widely studied, and limited information is available on its ecology, host range, and distribution.