| quercus | medium to large deciduous European oak having smooth leaves with rounded lobes |
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| quercus | large symmetrical deciduous tree with rounded crown widely distributed in eastern North America |
| quercus | deciduous European oak valued for its tough elastic wood |
| quercus | large deciduous red oak of southern and eastern United States having large 7- to 9-lobed elliptical leaves, large acorns and medium hard coarse-grained wood |
| quercus | small deciduous tree of eastern and central United States having dark green lyrate pinnatifid leaves and tough moisture-resistant wood used especially for fence posts |
| quercus | medium-sized evergreen oak of southern Europe and northern Africa having thick corky bark that is periodically stripped to yield commercial cork |
| quercus | small deciduous tree having the trunk branched almost from the base with spreading branches |
| quercus | a low spreading or prostrate shrub of southwestern United States with small acorns and leaves resembling those of the huckleberry |
| quercus | medium to large deciduous tree of China, Japan, and Korea having thick corky bark |
| quercus | medium to large deciduous timber tree of the eastern United States and southeastern Canada having dark outer bark and yellow inner bark used for tanning |
| quercus | medium-sized evergreen native to eastern North America to the east coast of Mexico |
| quercus | medium-small shrubby evergreen tree of western North America similar to the coast live oak but occurring chiefly in foothills of mountain ranges removed from the coast |