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What type of bolete?


Bayoufrogg

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Found at base of oak.  Cap is darker brown.  Cap, and especially stem, have slight purplish hue to them. 

Carpenter ants produced woody debris nearby and some is sitting on top of cap.  

White pore surface bruised brown after long period of time.

No spore print produced. 

Taste/spit test is moderately bitter.     

Is this tylopilus badiceps or something else?  Mushroom expert notes taste of tylopilus badiceps as mild, not bitter.  

Alternative id could be boletus separans.  Only hiccup is field guide says pore surface unchanged when bruised.  This one clearly bruises over time.   

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I've been meaning to ask on one of these tylopilus/bolete threads, is there a general rule that dark reticulation points to tylopilus and whiteish reticulation points to the edulis complex, or is that an over generalization? Just been noticing it come up a lot and never heard anyone state whether that is a guideline definitively. 

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Tylopilus makes sense here, possibly T. plumbeoviolaceus. But the bruising on the pore surface seems too intense, and the surface of the stalks with more texture/ornamentation than T. plumbeoviolaceus. Also, T. plumbeoviolaceus has an intensely bitter taste. I have no better species proposal. T. ferugineus is similar, but this species has a smooth stalk surface. 

Reminds me somewhat of immature Austroboletus gracilis, except this (several varieties) is a mainly northern NA species that associates with conifers. 

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