Quercus garryana

Oregon oak, Oregon Oak

Family: Fagaceae · Type: shrub · Native

Oregon oak is a native shrub or small tree found in diverse California habitats from coastal to interior regions, typically growing at moderate elevations. Flowering in spring, this deciduous oak produces small, inconspicuous flowers as a precursor to its distinctive acorn development. Growing from 0.3 to 5 meters tall with a thin, scaly light gray bark, the tree features short-hairy twigs that mature to a red-brown color. Its leaves are elliptic to obovate, 5 to 15 centimeters long, with 5 to 7 deep lobes, appearing shiny dark green on the upper surface and dull light green underneath with short hairs. The acorns mature in a cup-shaped shell 12 to 25 millimeters wide, with an ovoid nut 20 to 30 millimeters long that develops within a textured, tubercled cup.

California counties: Kern, Sonoma, Siskiyou, Mendocino, Butte, Trinity, Glenn, Shasta, Lake, Contra Costa, Napa, Del Norte, Humboldt, Marin, San Luis Obispo, San Mateo, Amador, Monterey, Tehama, Santa Clara, Plumas, Lassen, Solano, Nevada, Colusa, Madera, Yuba, Tulare, Fresno, Los Angeles, Alameda, Santa Barbara

Data from The California Species Project — 14,000+ California species with verified data from CNPS, CDFW, USFWS, Jepson eFlora, Cal-IPC, and more.