About Agrocybe rivulosa Nauta
Agrocybe rivulosa, commonly known as the wrinkled fieldcap, is a mushroom species belonging to the genus Agrocybe. The first recorded sighting of this species was in 2003, and it was first documented in Britain in 2004. This is a relatively large mushroom: its stem measures 5 to 10 centimeters long, and its cap grows to between 4 and 10 centimeters across. The cap’s color ranges from yellow to pale orange-brown. The species has been eaten, described as reasonably tasty, and has no recorded obvious toxicity.