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List of Quercus species

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, northwestern Africa
    • Quercus lanata - Woolly-leaved oak # - Himalaya
    • Quercus leucotrichophora - Himalayan oak # - Himalaya
    • 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 - Pedunculate oak, English oak - Europe, West Asia
    • 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, southwestern Asia
    • 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, northwestern Africa
    • Quercus trojana - Macedonian oak - southeastern Europe
    • Quercus variabilis - Chinese cork oak - eastern Asia
  • Section Protobalanus. The intermediate oaks. Southwest USA & northwest Mexico. Styles short, acorns mature in 18 months, very bitter, inside of acorn shell woolly.
    • Quercus cedrosensis - Cedros Island oak # - Baja California
    • Quercus chrysolepis - Canyon live oak # - southwestern North America
    • Quercus palmeri - Palmer oak # - southwestern North America
    • Quercus tomentella - Island oak # - southwestern North America
    • Quercus vaccinifolia - 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
Acorns of Quercus kerrii, a species in subgenus Cyclobalanopsis
Enlarge
Acorns of Quercus kerrii, a species in subgenus Cyclobalanopsis
  • 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, right); 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 lamellosa - # - Himalaya
    • Quercus lineata - # - southeastern Asia
    • Quercus myrsinifolia - Bamboo-leaf oak # - eastern Asia
    • Quercus oxyodon - # - Assam, Myanmar

#

Species with evergreen foliage ("live oaks") are tagged #. Note that the change from deciduous to evergreen character (or vice-versa) has evolved on numerous occasions in Quercus, and does not necessarily indicate that the species concerned are closely related.

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Last updated: 10-24-2004 05:10:45