cavernous crystalwort vs Common Fieldcap

Riccia cavernosa compared with Agrocybe pediades

Key Differences

• cavernous crystalwort is Endangered while Common Fieldcap is Least Concern.

Taxonomic Classification

Rank	cavernous crystalwort	Common Fieldcap
Kingdom	Plantae (Plants)	Fungi (Fungi)
Phylum	Marchantiophyta (liverwort)	Basidiomycota (Club Fungi)
Class	Marchantiopsida (Marchantiopsida)	Agaricomycetes (Mushrooms)
Order	Marchantiales (Marchantiales)	Agaricales (Gilled Mushrooms)
Family	Ricciaceae	Strophariaceae
Genus	Riccia	Agrocybe
Species	Riccia cavernosa	Agrocybe pediades

Conservation Status

cavernous crystalwort

EN — Endangered

Common Fieldcap

LC — Least Concern

Physical Characteristics

Attribute	cavernous crystalwort	Common Fieldcap
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

cavernous crystalwort

Habitat

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

Range

Widely distributed across Europe (6 countries), North America (United States), and South America (Brazil). Currently classified as 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).

cavernous crystalwort

The Cavernous crystalwort (Riccia cavernosa) is a species in the genus Riccia. It is currently classified as Endangered on the IUCN Red List. Native to Europe and North America and South America, inhabiting ecosystems characteristic of the region.

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 6 countries:

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