Wässriger Saumpilz vs Gray Flying Fox

Psathyrella piluliformis compared with Pteropus griseus

Key Differences

Wässriger Saumpilz is Least Concern while Gray Flying Fox is Vulnerable.

Taxonomic Classification

Rank	Wässriger Saumpilz	Gray Flying Fox
Kingdom	Fungi (Pilze)	Animalia (Tier)
Phylum	Basidiomycota (Ständerpilze)	Chordata (Chordatiere)
Class	Agaricomycetes (Mushrooms)	Mammalia (Säugetiere)
Order	Agaricales (Champignonartige)	Chiroptera (Fledertiere)
Family	Psathyrellaceae	Pteropodidae (Fruit Bats)
Genus	Psathyrella	Pteropus (Flying Foxes)
Species	Psathyrella piluliformis	Pteropus griseus

Conservation Status

Wässriger Saumpilz

LC — Least Concern

Gray Flying Fox

VU — Vulnerable

Physical Characteristics

Attribute	Wässriger Saumpilz	Gray Flying Fox
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Wässriger Saumpilz

Habitat

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

Range

Widely distributed across Asia (Taiwan), Europe (5 countries), North America (United States), and South America (Brazil).

Gray Flying Fox

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Wässriger Saumpilz

<em>Psathyrella piluliformis</em>, the common stump brittlestem, is a saprotrophic basidiomycete fungus in the family Psathyrellaceae, order Agaricales. It has a broad distribution across Asia, Europe, and the Americas, typically found growing in dense clusters on or near the stumps and buried roots of deciduous trees, particularly oaks and beeches, from autumn through to early winter. The fruitbodies are hygrophanous, changing colour dramatically depending on moisture content, ranging from pale buff when dry to a rich honey-brown when wet. <em>Psathyrella piluliformis</em> plays an important ecological role as a wood decomposer, facilitating the breakdown of lignin and cellulose and contributing to nutrient cycling in forest ecosystems. The fragile, brittle gills and thin-walled spores are characteristic of the genus. Biological traits including average mycelial lifespan, fruiting body dimensions under natural conditions, and specific substrate preferences remain poorly documented. The species is assessed as Least Concern by the IUCN, reflecting its wide distribution and apparent abundance across temperate woodland habitats in the Northern Hemisphere and beyond.