Collage of wildflowers and butterflies

We recently found this example of a bolete on the Common - unusual, since they usually occur in woodland, and this example was a good distance away from the nearest trees.

I have not definitively identified it because that would require looking a the spores and cutting the flesh to observe the discolouration in air. I wonder whether it is Boletus luridus, which is associated with calcareous ground (though usually beach woodland) and also has a red reticulation on the stem against the lighter background.