brown hydra vs Common Fieldcap

Hydra oligactis compared with Agrocybe pediades

Key Differences

brown hydra is Not Evaluated while Common Fieldcap is Least Concern.

Taxonomic Classification

Rank	brown hydra	Common Fieldcap
Kingdom	Animalia (Animals)	Fungi (Fungi)
Phylum	Cnidaria (Cnidarians)	Basidiomycota (Club Fungi)
Class	Hydrozoa (Hydrozoa)	Agaricomycetes (Mushrooms)
Order	Anthoathecata (Anthoathecata)	Agaricales (Gilled Mushrooms)
Family	Hydridae	Strophariaceae
Genus	Hydra	Agrocybe
Species	Hydra oligactis	Agrocybe pediades

Conservation Status

brown hydra

NE — Not Evaluated

Common Fieldcap

LC — Least Concern

Physical Characteristics

Attribute	brown hydra	Common Fieldcap
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

brown hydra

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

Distributed across Denmark, Norway, and Sweden.

Common Fieldcap

Habitat

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

Range

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

brown hydra

The Brown Hydra (Hydra oligactis) is a species in the genus Hydra. Native to Europe, inhabiting ecosystems characteristic of the region. Distributed across Denmark, Norway, and Sweden. As a member of the Hydra genus, this species contributes to biodiversity in its native 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.