SF Peninsula Fungi - symbiote
Lots of these boletes at Lost Trancos OSP in hardwood forest Nov. 09.  I think this is B. regius, the red-capped butter bolete.  The pores are very narrow--spongy even--and are yellow, bruising blue.  Cap diameters were usually 4-6".

Lots of these boletes at Lost Trancos OSP in hardwood forest Nov. 09. I think this is B. regius, the red-capped butter bolete. The pores are very narrow--spongy even--and are yellow, bruising blue. Cap diameters were usually 4-6".

boletusregiusmaybe