Family description: Shrubs or trees. Leaves alternate, simple, stipulate. Plants monoecious. Staminate inflorescence an erect or pendulous spike or head; Flowers imperfect, regular. Fruit a nut. Oaks dominate vegetation in temperate and subtropical regions.
Generalized floral formula:
or
Quercus alba
White oak
Native species
Quercus falcata
Southern red oak
Native species
Quercus nigra
River oak
Native species
Quercus phellos
Willow oak
Native species
Quercus rubra
Red oak
Native species
Quercus stellata
Post oak
Native species
Quercus virginiana
Southern live oak
Native species