Quercus rotundifolia | Central Valley
Shown here is one of only a handful of known examples of Quercus rotundifolia known in California. This oak species is closely related to the Holm or Holly Oak (Quercus ilex) but appears much less prone to sooty mold and aphids. A good discussion of the species can be found here: Plant Biodiversity of South-Western Morocco
These rare trees show good adaptability to California, and are highly ornamental with their silvery leaf underside, and greyish green top growth. Some forms are know for sweet acorn production, which was likely selected into these trees by ancient humans, in their search to create consistent food sources in very dry environments, likely over the course of millenia.