Kot

4 hours ago, hoosiermushrooms said:

Many Tylopilus are not bitter and will bruise.

Tylopilus are poisonous?

5 hours ago, hoosiermushrooms said:

They are Tylopilus. Need more info to get to species.

But taste is not bitter and spore side became dark after finger pressing

There is the point of confusion: They look like boletus but the top film possible to remove like from Suillus granulatus; the spore side became dark like on Leccinum scabrum if press under cup; taste is no bitter, light sweet. Therefore, it was NO ONE worm in old large one (not usual for good boletus).

What is the name of these mushrooms, I found under oak trees