Phylum: Basidiomycota Family: Psathyrellaceae
Coprinopsis cordispora (T. Gibbs) Gminder (2010)
One of a trio of species that are very similar and not easy to separate. One source notes that the most distinctive character is the presence of lageniform cheilocystidia. The five-sided spores are distinctive of the group.
Found on herbivore dung and related material such as silage