This was found under Quercus fusiformis and Ulmus crassifolia in a small neighbourhood park. Several red pored boletes and typical examples of Boletus luridellus were found in the area. These got really beat up in transport and I don't have much more information other than what you see. I suspect these could be Boletus luridellus with more age displaying more prominent red staining in the stembase than others I found in the area. I do have some doubt about this ID. Reticulation present in upper stem.