Quercus oleoides
 Quercus oleoides with Spanish common names encina or encino is a species of oak in the Fagaceae family. It grows in dry forests and pastureland of lowest North America and of Central America from Guanacaste Province Costa Rica to Tamaulipas Mexico.Quercus oleoides is a slow-growing tree reaching 8–15 metres (26–49 ft) in height. Its pale gray leaves are evergreen thick hard 4 to 11 cm long 2 to 5 cm wide oblong or elliptic.