California Black Oak - Quercus kelloggii
Restricted to California and southern Oregon, California Oak is most common west of the Sierra Nevada, with small populations along the eastern slopes. It grows in a variety of habitats and is capable of resprouting after fire. It has declined in abundance, owing to cutting, and disease. The deeply lobed leaves are widest above, with pointed tips and bristly teeth, sometimes hairy beneath. Autumn color is often bright yellow. The acorns are long, with a deep cap; they mature in two seasons. Old trees have a "classic" oak form, with rounded tops and thick trunks.