Kingdom: Fungi
Division: Basidiomycota
Class: Agaricomycetes
Order: Agaricales
Family: Psathyrellaceae
Genus: Psathyrella
Psathyrella is a large genus of about 400 fungi usually with a thin cap and white or yellowish white hollow stem. But the caps do not self-digest as do those of Coprinellus and Coprinopsis. Some also have brown spores rather than black. These fungi are often drab-coloured and inedible.
It is a hard genus to identify. Factors used in determining the species are the size of spores, the appearance of young fruiting bodies and distinctive sterile cells on the gill faces, gill edges and stipes respectively.
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