Common Fieldcap vs Common Oak

Agrocybe pediades compared with Quercus robur

Taxonomic Classification

Rank	Common Fieldcap	Common Oak
Kingdom	Fungi (真菌界)	Plantae (植物)
Phylum	Basidiomycota (担子菌门)	Magnoliophyta (木兰植物门)
Class	Agaricomycetes (傘菌綱)	Magnoliopsida (木兰纲)
Order	Agaricales (伞菌目)	Fagales (壳斗目)
Family	Strophariaceae	Fagaceae (Beech Family)
Genus	Agrocybe	Quercus (Oaks)
Species	Agrocybe pediades	Quercus robur

Conservation Status

Common Fieldcap

LC — Least Concern

Common Oak

LC — Least Concern

Trend: Stable →

Physical Characteristics

Attribute	Common Fieldcap	Common Oak
Diet	—	Autotroph
Average Lifespan	—	1000 years
Average Length	—	25.0 m
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 Oak

Habitat

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

Range

Widely distributed across Africa (Lesotho, South Africa), Asia (Armenia, India), Europe (8 countries), North America (Canada, United States), Oceania and the Pacific (Australia, New Zealand), and South America (4 countries).

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 Oak

英国栎（Quercus robur）是欧洲最重要、分布最广的落叶乔木之一，寿命可逾千年，高达40米，所支撑的生物多样性超过欧洲任何其他树种，超过2300种昆虫、真菌、地衣、苔藓和鸟类直接依赖成熟栎树为生。分布于欧洲全境至西亚的温带森林，其坚硬耐久的木材在历史上是造船、建筑和制桶的基础材料。

Shared Countries

Both species can be found in 6 countries:

🇧🇪 Belgium 🇩🇰 Denmark 🇳🇴 Norway 🇵🇹 Portugal 🇸🇪 Sweden 🇺🇸 United States