Aspen Scaber Stalk

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About

I found this mushroom while hiking the Great Western Trail, in Millcreek Canyon.

It looks a lot like a grapefruit.
And it's surprisingly large.
Checking the underside of the cap, there are pores. This appears to be a bolete of some sort.
Bolete - Wikipedia
Dirty looking stem.

Identification

Taking a look in the field guide, I think this is the one.

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