Phylum: Basidiomycota Family: Psathyrellaceae
Coprinopsis nivea (Pers.) Redhead, Vilgalys & Moncalvo
Snowy Inkcap
Delicate pure white inkcap when young and covered in floccose velar remains, the gills and lower cap deliquescing to black with age. Common on cow and horse dung
References:
Breitenbach & Kranzlin (1995) Fungi of Switzerland, Volume 4, Agarics, 2nd Part
O'Reilly (2016) Fascinated by Fungi