Azalea Gall vs Common Fieldcap

Exobasidium japonicum compared with Agrocybe pediades

Taxonomic Classification

Rank	Azalea Gall	Common Fieldcap
Kingdom same	Fungi (균계)	Fungi (균계)
Phylum same	Basidiomycota (담자균류)	Basidiomycota (담자균류)
Class	Exobasidiomycetes (떡병균강)	Agaricomycetes (주름버섯강)
Order	Exobasidiales (Exobasidiales)	Agaricales (주름버섯목)
Family	Exobasidiaceae	Strophariaceae
Genus	Exobasidium	Agrocybe
Species	Exobasidium japonicum	Agrocybe pediades

Evolutionary Relationship

Azalea Gall and Common Fieldcap share a common ancestor at the Phylum level: Basidiomycota. (담자균류)

Conservation Status

Azalea Gall

LC — Least Concern

Common Fieldcap

LC — Least Concern

Physical Characteristics

Attribute	Azalea Gall	Common Fieldcap
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Azalea Gall

Habitat

Native to Asia and Europe, inhabiting ecosystems characteristic of the region.

Range

Found across Asia (Taiwan) and Europe (6 countries).

Common Fieldcap

Habitat

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

Range

Found across Europe (5 countries) and North America (United States).

Azalea Gall

The Azalea Gall (Exobasidium japonicum) is a species in the genus Exobasidium. It is currently classified as Least Concern on the IUCN Red List. Native to Asia and Europe, inhabiting ecosystems characteristic of the region.

Common Fieldcap

The Common Fieldcap (<em>Agrocybe pediades</em>) is a saprotrophic fungus belonging to the genus Agrocybe within the family Strophariaceae. It typically produces small, tan to pale brown cap-shaped fruiting bodies and is often found growing in clusters or scattered on lawns, grassy areas, forest floors, decomposing wood, and soil-rich ecosystems. The species typically inhabits forest floors, decomposing wood, and soil ecosystems, obtaining nutrients by breaking down dead organic matter. Its geographic range includes several European countries — Belgium, Denmark, Norway, Portugal, and Sweden — as well as the United States in North America. <em>Agrocybe pediades</em> is assessed as Least Concern on the IUCN Red List, reflecting its broad distribution and apparent stability. Biological traits of this species, including specific data on fruiting body size, lifespan, and ecological preferences, remain poorly documented in the scientific literature. Like other members of its genus, it typically fruits during warmer months and often appears after rainfall in nutrient-rich grassland and woodland habitats.

Shared Countries

Both species can be found in 4 countries:

🇧🇪 Belgium 🇩🇰 Denmark 🇳🇴 Norway 🇸🇪 Sweden