Please excuse me – I expect this is common, but I am still learning and everything is new when you start!
This was on the unimproved grassland on the North Devon Coast. I didn’t have a clue until I got the new Grassland Fungi book for Christmas, and there is a picture in there of Common Cavalier, Melanoleuca polioleuca, showing a similar shape. But it describes it as dry and leathery, whereas mine were very greasy to touch.
Thank you in advance