Coprinopsis atramentaria (Coprinus atramentarius) Fruits from buried wood in grass, open disturbed areas, asphalt, etc. from spring-fall. Appears in tufts of several fruiting bodies.
Gray-brown ovoid cap with thin flesh is browner in center, and splits as it opens. Whitish crowded gills become black (dark-brown spores) and quickly deliquesce. Whitish stipe is short.
Must be collected quickly for cooking and eating. Will develop hangover symptoms, dehydration, nausea, possible irregular heart beat, etc. if drink with alcohol.

Coprinopsis atramentaria (Coprinus atramentarius)
Coprinopsis atramentaria (Coprinus atramentarius)
Coprinopsis atramentaria (Coprinus atramentarius)

Coprinopsis atramentaria (Coprinus atramentarius)