Common Fieldcap vs Queen sago

Agrocybe pediades compared with Cycas circinalis

Key Differences

Common Fieldcap is Least Concern while Queen sago is Endangered.

Taxonomic Classification

Rank	Common Fieldcap	Queen sago
Kingdom	Fungi (Fungi)	Plantae (Plants)
Phylum	Basidiomycota (Club Fungi)	Tracheophyta
Class	Agaricomycetes (Mushrooms)	Cycadopsida (Cycadopsida)
Order	Agaricales (Gilled Mushrooms)	Cycadales (Cycadales)
Family	Strophariaceae	Cycadaceae
Genus	Agrocybe	Cycas
Species	Agrocybe pediades	Cycas circinalis

Conservation Status

Common Fieldcap

LC — Least Concern

Queen sago

EN — Endangered

Physical Characteristics

Attribute	Common Fieldcap	Queen sago
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Common Fieldcap

Habitat

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

Range

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

Queen sago

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, montane grasslands and shrublands, and Mediterranean forests and woodlands, among 5 distinct biome types spanning the Afrotropic and Oceanian realms. Populations are also found in montane and highland environments at higher elevations.

Range

Distributed across Marshall Islands, Portugal, South Africa, Taiwan, and United States. Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

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.