Q. x morehus?
Some leaves of the bicentennial tree. It is noted as coast live oak below, but leaves appear relatively flat and don't have visible fuzz on the underside of the leaves, implying interior live oak is more probable. Only confirmation of the tree I found with a quick internet search was this page stating coast live oak:
https://www.protrails.com/trail/709/san-francisco-marin-headlands-mt-tamalpais-point-reyes-mitchell-canyon-interpretive-trail