Black Olive Berry vs Common Fieldcap

Elaeocarpus holopetalus compared with Agrocybe pediades

Key Differences

• Black Olive Berry is Data Deficient while Common Fieldcap is Least Concern.

Taxonomic Classification

Rank	Black Olive Berry	Common Fieldcap
Kingdom	Plantae (Plants)	Fungi (Fungi)
Phylum	Magnoliophyta (Flowering Plants)	Basidiomycota (Club Fungi)
Class	Magnoliopsida (Dicots)	Agaricomycetes (Mushrooms)
Order	Oxalidales (Oxalidales)	Agaricales (Gilled Mushrooms)
Family	Elaeocarpaceae	Strophariaceae
Genus	Elaeocarpus	Agrocybe
Species	Elaeocarpus holopetalus	Agrocybe pediades

Conservation Status

Black Olive Berry

DD — Data Deficient

Common Fieldcap

LC — Least Concern

Physical Characteristics

Attribute	Black Olive Berry	Common Fieldcap
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Black Olive Berry

Habitat

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

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 Olive Berry

The Black Olive Berry (Elaeocarpus holopetalus) is a species in the genus Elaeocarpus. Its conservation status is listed as Data Deficient, indicating insufficient data for assessment. 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.