Genus: Quercus
  • Section: Erythrobalanus, the red oaks
    • Subsection: red oaks
      • Quercus coccinea - Scarlet oak
      • Quercus ellipsoidalis - Northern pin oak
      • Quercus falcata - Spanish oak, aka southern red oak
      • Quercus palustris - Pin oak
      • Quercus rubra - Northern red oak
      • Quercus shumardii - Shumard oak
      • Quercus velutina - Black oak
    • Subsection: shingle oaks
      • Quercus phellos - Willow oak
      • Quercus imbricaria - Shingle oak
    • Subsection: live oaks
      • Quercus agrifolia - Coast live oak
      • Quercus chrysolepis - Canyon live oak
      • Quercus virginiana - Live oak
      • Quercus wislizenii - Interior live oak
  • Section: Leucobalanus, the white oaks
    • Subsection: white oaks
    • Subsection: chestnut oaks
Not yet formatted, and still incomplete:
  • Quercus acrodonta
  • Quercus acuta - Japanese evergreen oak
  • Quercus acutissima - Sawthorn oak
  • Quercus aegilops
  • Quercus aliena - Oriental white oak
  • Quercus auricoma
  • Quercus cerris - Turkey oak
  • Quercus douglasii - Blue oak
  • Quercus emoryi - Emory oak
  • Quercus frainetto - Italian oak
  • Quercus gambelii - Gambel oak
  • Quercus grisea - Gray oak
  • Quercus havardii - Sand shinnery oak
  • Quercus ilex - Holm oak
  • Quercus incana - Bluejack oak
  • Quercus kelloggii - California black oak
  • Quercus laevis - Turkey oak
  • Quercus lanata
  • Quercus laurifolia - Laurel oak
  • Quercus litseoides
  • Quercus lobata - Valley oak
  • Quercus marilandica - Blackjack oak
  • Quercus nigra - Water oak
  • Quercus oblongifolia - Mexican blue oak
  • Quercus petraea - Sessile oak
  • Quercus pubescens - Downy Oak
  • Quercus pungens - Sandpaper oak
  • Quercus pyrenaica - Portuguese oak
  • Quercus suber - Cork oak
  • Quercus turbinella - Shrub live oak
  • Quercus x turneri - Turner oak