Colonial tunicate vs Common Fieldcap

Symplegma reptans compared with Agrocybe pediades

Key Differences

• Colonial tunicate is Not Evaluated while Common Fieldcap is Least Concern.

Taxonomic Classification

Rank	Colonial tunicate	Common Fieldcap
Kingdom	Animalia (동물)	Fungi (균계)
Phylum	Chordata (척삭동물)	Basidiomycota (담자균류)
Class	Ascidiacea (해초강)	Agaricomycetes (주름버섯강)
Order	Stolidobranchia (강새해초목)	Agaricales (주름버섯목)
Family	Styelidae	Strophariaceae
Genus	Symplegma	Agrocybe
Species	Symplegma reptans	Agrocybe pediades

Conservation Status

Colonial tunicate

NE — Not Evaluated

Common Fieldcap

LC — Least Concern

Physical Characteristics

Attribute	Colonial tunicate	Common Fieldcap
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Colonial tunicate

Habitat

Native to Europe and North America, inhabiting ecosystems characteristic of the region.

Range

Distributed across Mexico, Norway, Sweden, and United States.

Common Fieldcap

Habitat

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

Range

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

Colonial tunicate

<em>Symplegma reptans</em> is a colonial tunicate in the family Styelidae with known occurrences in Mexico, Norway, Sweden, and the United States. This species has not been evaluated by the IUCN. Colonial tunicates in the genus <em>Symplegma</em> form encrusting sheet-like colonies on hard marine substrates, including rocks, shells, and artificial structures, in shallow coastal environments. Each colony is composed of multiple filter-feeding zooids embedded in a common tunic, through which nutrients and metabolites are distributed. The presence of <em>Symplegma reptans</em> across both the North Atlantic and Pacific coastal regions suggests either a wide native distribution or a history of introduction through maritime vectors such as ballast water and hull fouling. As a sessile filter feeder, this species contributes to water column filtration and nutrient cycling within benthic communities. The reproductive biology of <em>Symplegma reptans</em> likely involves both sexual reproduction via larval dispersal and asexual proliferation through budding within established colonies. Biological traits of this species remain poorly documented in the scientific literature.

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.

Shared Countries

Both species can be found in 3 countries:

🇳🇴 Norway 🇸🇪 Sweden 🇺🇸 United States