Trees and stumps

What is it?

Our spell of (proper) summer continues, and the ground is already getting parched. So much in fact that even the strawberries are getting unhappy. A couple of my minions (other people usually call them "family members") went to the forest yesterday and brought back 1.1kg of berries, and that's probably the last of them this summer.

The only place where there's anything of interest is the trees and stumps, and I came across a rather fine fungal specimen today. As you can see from the photograph, it is quite big, the cap about 15cm across, and its thin stem at least as tall, growing from a dead tree stump. It looks a bit like some kind of entoloma, but the stipe is too thin and their caps, as far as I know, are never convex. A mystery! If it's still there this evening I'll take it home to make a spore print, and then perhaps I'll be able to identify at least its genus.

UPD: The spore print turned out to be white, so I have to conclude that it is some kind of toughshank.