Common Fieldcap vs Common Peony

Agrocybe pediades compared with Paeonia officinalis

Taxonomic Classification

Rank	Common Fieldcap	Common Peony
Kingdom	Fungi (Fungi)	Plantae (Plants)
Phylum	Basidiomycota (Club Fungi)	Magnoliophyta (Flowering Plants)
Class	Agaricomycetes (Mushrooms)	Magnoliopsida (Dicots)
Order	Agaricales (Gilled Mushrooms)	Saxifragales (Saxifragales)
Family	Strophariaceae	Paeoniaceae
Genus	Agrocybe	Paeonia
Species	Agrocybe pediades	Paeonia officinalis

Conservation Status

Common Fieldcap

LC — Least Concern

Common Peony

LC — Least Concern

Physical Characteristics

Attribute	Common Fieldcap	Common Peony
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).

Common Peony

Habitat

Typically found in diverse terrestrial habitats from tropical forests to temperate regions.

Range

Found across Europe (9 countries) and North America (Canada, United States).

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.

Common Peony

<em>Paeonia officinalis</em>, the common peony, is a herbaceous perennial flowering plant in the family Paeoniaceae, widely cultivated for its large, showy flowers ranging from deep red to pink and white. In the wild, it typically grows in open woodlands, scrublands, and rocky hillsides across southern and central Europe, with native or naturalised populations documented in Austria, Belgium, the Czech Republic, France, Canada, and numerous other European and North American countries. The species prefers well-drained soils in partially shaded to open positions and produces large, deeply divided leaves alongside its ornamental blooms, which appear in late spring. <em>Paeonia officinalis</em> has a long history of medicinal and ornamental use spanning millennia, and numerous cultivated varieties have been developed. It is assessed as Least Concern on the IUCN Red List, reflecting stable populations in many parts of its native range, though wild populations can be locally threatened by over-collection, agricultural expansion, and habitat conversion. Biological traits such as average lifespan of individual plants, precise dimensions, and detailed dietary or metabolic data remain poorly documented in the scientific literature. The species plays a role in supporting pollinators, particularly beetles and bees that visit its flowers.

Shared Countries

Both species can be found in 3 countries:

🇧🇪 Belgium 🇳🇴 Norway 🇺🇸 United States