Is this the grey knight mushroom ?

I think I found a Tricholoma terreum, with greying gills and slightly grey flesh. I have collected a specimen and can perform some micro... but if these images confirm it, I can focus on two Melanoleuca that I have encountered. Size about 4cm across and cap was rough-textured (like tomentose)

Habitat = Grassy ground under pine trees

Thanks a lot UWE !

Yes, no particular taste and no particular scent, no yellowing in the flesh, just pale grey.