What mushroom is this?

What mushroom is this?

Observation - What mushroom is this? - UK and Ireland. Description: Growing in between the roots of a Beech tree. I don't think they are funnel mushrooms as the top is flat or undulating. They are yellowish to brown and were wet when photographed. The gills are of different lengths and the stipe is smooth close to the hea

Growing in between the roots of a Beech tree. I don't think they are funnel mushrooms as the top is flat or undulating. They are yellowish to brown and were wet when photographed. The gills are of different lengths and the stipe is smooth close to the head and then blotchy further down.