List of Quercus species: Meaning (information, definition, explanation, facts)

Genus Quercus

• Subgenus Quercus. Typical oaks. Widespread; acorns not tightly clustered, with scales on acorn cup arranged in spirals.

• Section Quercus (synonym Lepidobalanus). The white oaks. Europe, Asia, north Africa, North America. Styles short; acorns mature in 6 months, sweet or slightly bitter, inside of acorn shell hairless.
  • Quercus alba - White oak - eastern North America
  • Quercus aliena - Oriental white oak - eastern Asia
  • Quercus arizonica - Arizona white oak # - southwestern North America
  • Quercus bicolor - Swamp white oak - eastern North America
  • Quercus douglasii - Blue oak - southwestern North America
  • Quercus emoryi - Emory oak # - southwestern North America
  • Quercus faginea - Portuguese oak - southwestern Europe
  • Quercus fusiformis - Texas live oak - south central North America
  • Quercus gambelii - Gambel oak - southwestern North America
  • Quercus garryana - Oregon white oak - western North America
  • Quercus geminata - Sand live oak - southeastern North America
  • Quercus grisea - Gray oak - south central North America
  • Quercus havardii - Sand shinnery oak - south central North America
  • Quercus ilex - Holm oak # - southern Europe
  • Quercus lobata - Valley oak or California white oak - southwestern North America
  • Quercus lyrata - Overcup oak - eastern North America
  • Quercus macrocarpa - Bur oak - eastern North America
  • Quercus michauxii - Swamp chestnut oak - eastern North America
  • Quercus minima - Dwarf live oak # - southeastern North America
  • Quercus mongolica - Mongolian oak - eastern Asia
  • Quercus muehlenbergii - Chinkapin oak - eastern North America
  • Quercus oblongifolia - Mexican blue oak # - western North America
  • Quercus petraea - Sessile oak - Europe
  • Quercus pubescens - Downy Oak - Europe
  • Quercus prinus - Chestnut oak - eastern North America
  • Quercus pungens - Sandpaper oak # - south central North America
  • Quercus robur - English oak - Europe
  • Quercus stellata - Post oak - eastern North America
  • Quercus turbinella - Shrub live oak # - southwestern North America
  • Quercus virginiana - Southern live oak # - southeastern North America

• Section Mesobalanus. Europe, Asia, north Africa. Styles long; acorns mature in 6 months, bitter, inside of acorn shell hairless (closely related to sect. Quercus and sometimes included in it).
  • Quercus dentata - Daimyo oak - eastern Asia
  • Quercus frainetto - Hungarian oak - southeastern Europe
  • Quercus macranthera - Caucasian oak - western Asia
  • Quercus pontica - Armenian oak - western Asia
  • Quercus pyrenaica - Pyreneean oak - southwestern Europe
  • Quercus vulcanica - Kasnak oak - southwestern Asia

• Section Cerris. Europe, Asia, north Africa. Styles long; acorns mature in 18 months, very bitter, inside of acorn shell hairless or slightly hairy.
  • Quercus acutissima - Sawthorn oak - eastern Asia
  • Quercus calliprinos - Palestine oak # - southwestern Asia
  • Quercus cerris - Turkey oak - southern Europe
  • Quercus coccifera - Kermes oak # - southern Europe
  • Quercus libani - Lebanon oak - southwestern Asia
  • Quercus macrolepis - Vallonea oak - southwestern Asia
  • Quercus semecarpifolia - Himalayan oak # - southern Asia
  • Quercus suber - Cork oak # - southwestern Europe
  • Quercus trojana - Macedonian oak - southeastern Europe
  • Quercus variabilis - Chinese cork oak - eastern Asia

• Section Protobalanus. Southwest USA & northwest Mexico. Styles short, acorns mature in 18 months, very bitter, inside of acorn shell woolly.
  • Quercus chrysolepis - Canyon live oak # - southwestern North America
  • Quercus palmeri - Palmer oak # - southwestern North America
  • Quercus tomentella - Channel island oak # - southwestern North America
  • Quercus vacciniifolia - Huckleberry oak # - southwestern North America

• Section Lobatae (synonym Erythrobalanus). The red oaks. North, Central & South America. Styles long, acorns mature in 18 months, very bitter, inside of acorn shell woolly.
  • Quercus agrifolia - California live oak # - southwestern North America
  • Quercus canbyi - Canby oak # - Mexico
  • Quercus coccinea - Scarlet oak - eastern North America
  • Quercus ellipsoidalis - Northern pin oak - eastern North America
  • Quercus falcata - Spanish oak, aka Southern red oak - southeastern North America
  • Quercus humboldtii - South American Oak # - northern South America
  • Quercus hypoleucoides - Silverleaf oak # - southwestern North America
  • Quercus imbricaria - Shingle oak - eastern North America
  • Quercus incana - Bluejack oak - southwestern North America
  • Quercus kelloggii - California black oak - western North America
  • Quercus laevis - American turkey oak - southeastern North America
  • Quercus laurifolia - Laurel oak # - southeastern North America
  • Quercus marilandica - Blackjack oak - eastern North America
  • Quercus nigra - Water oak # - eastern North America
  • Quercus palustris - Pin oak - eastern North America
  • Quercus phellos - Willow oak - eastern North America
  • Quercus polymorpha - Coahuila oak # - Mexico
  • Quercus rhysophylla - Loquat-leaf oak # - Mexico
  • Quercus rubra - Northern red oak - eastern North America
  • Quercus shumardii - Shumard oak - eastern North America
  • Quercus texana - Nuttall's oak - south central North America
  • Quercus velutina - Black oak - eastern North America
  • Quercus wislizenii - Interior live oak # - southwestern North America

• Subgenus Cyclobalanopsis. Cluster-acorn oaks. A large group of evergreen oaks in east Asia with clustered acorns and the scales on the acorn cups in distinct concrescent rings (see photo, top right on the Quercus main page); often treated as a separate genus Cyclobalanopsis.

• Section Cyclobalanopsis.
  • Quercus acuta - Japanese evergreen oak # - eastern Asia
  • Quercus glauca - Glaucous-leaf oak # - southeastern Asia
  • Quercus kerrii - Kerr's oak # - southeastern Asia
  • Quercus myrsinifolia - Bamboo-leaf oak # - eastern Asia

Species with evergreen foliage are tagged #. Note that evergreen character has evolved on numerous occasions in Quercus, and does not necessarily indicate that the species concerned are closely related.

• Not yet formatted, and still incomplete

• Quercus acrodonta
• Quercus auricoma
• Quercus lanata
• Quercus litseoides