Black Ash vs Common Fieldcap

Fraxinus nigra compared with Agrocybe pediades

Key Differences

Black Ash is Critically Endangered while Common Fieldcap is Least Concern.

Taxonomic Classification

Rank	Black Ash	Common Fieldcap
Kingdom	Plantae (bitki)	Fungi (mantar)
Phylum	Magnoliophyta (Flowering Plants)	Basidiomycota (Bazitli mantarlar)
Class	Magnoliopsida (Dicots)	Agaricomycetes (Mushrooms)
Order	Lamiales (Lamiales)	Agaricales (Lamelli mantarlar)
Family	Oleaceae	Strophariaceae
Genus	Fraxinus	Agrocybe
Species	Fraxinus nigra	Agrocybe pediades

Conservation Status

Black Ash

CR — Critically Endangered

Common Fieldcap

LC — Least Concern

Physical Characteristics

Attribute	Black Ash	Common Fieldcap
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Black Ash

Habitat

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

Range

Distributed across Canada and United States. Currently classified as Critically Endangered on the IUCN Red List, this species faces significant conservation challenges across its 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).

Black Ash

The Black Ash (Fraxinus nigra) is a species in the genus Fraxinus. It is currently classified as Critically Endangered on the IUCN Red List. Typically found in diverse terrestrial habitats from tropical forests to temperate regions.

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.