Infundibulicybe geotropa

About

Infundibulicybe geotropa, also known as the trooping funnel or monk's head, is a large funnel-shaped mushroom with a sturdy cream or buff colour. It grows widely in Europe and in North America in mixed woodlands, often in troops or fairy rings, one of which is over half a mile wide. Although edible, it could be confused with some poisonous species of similar colouration and size.

Summary from Wikipedia