I saw this Bi-color Bolete also known as a Bitter Bolete ona walk. There was something funny about it. The cap was near the ground because the stem doubled over and grew straight after it bent. The telltale signs of a Bi-color Bolete is the red cap with yellow underbelly. The stem has blueing already but if you break the cap or stom it'll quickly turn blue. That's the sign to leave it where you found it. It'll make you wish you did when you get stomach issues after you eat it.