In the woods: on the W/SW slope/toe-slope of Walker Mountain. Twigs tomentose, leaf petiole less than 5mm, leaves convex, puberulent, short-hairy abaxially, margin wavy, inrolled, toothed (from Jepson). Does not key from Flora of Oregon, as it isn't Q chrysolepis or vaccinifolia. It reminded of oaks I saw in Lake/Colusa County, CA, so I grabbed a sample. In an area with a 'unique' flora.
Nearby individual as previous ob as this species, in all ways identical.
BIO 4140
Invasive
Image was taken on September 12, 2023 in the afternoon at the Cal Poly Pomona Lyle Center. It was by the edge of the Lyle center near the shed on the hill by a wire fencing.