Genus Quercus
Section Quercus
The
white oaks (synonym sect.
Lepidobalanus).
Europe,
Asia, north
Africa,
North America. Styles short; acorns mature in 6 months, sweet or slightly bitter, inside of acorn shell hairless.
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).
Section Cerris
Europe, Asia, north Africa. Styles long; acorns mature in 18 months, very bitter, inside of acorn shell hairless or slightly hairy.
Section Protobalanus
The
intermediate oaks. Southwest USA & northwest Mexico. Styles short, acorns mature in 18 months, very bitter, inside of acorn shell woolly.
Section Lobatae
The
red oaks (synonym sect.
Erythrobalanus). North, Central & South America. Styles long, acorns mature in 18 months, very bitter, inside of acorn shell woolly.
- Quercus acerifolia - Maple leaved oak, or Mapleleaf oak # - south central North America
- Quercus agrifolia - Coast live oak # - southwestern North America
- Quercus arkansana - Arkansas oak - southeastern North America
- Quercus buckleyi - Buckley oak - southwestern North America
- Quercus canbyi - Canby oak # - Mexico
- Quercus coccinea - Scarlet oak - eastern North America
- Quercus cualensis - Mexico (Sierra Madre del Sur)
- Quercus depressa - Mexico
- Quercus eduardii - Mexico
- Quercus ellipsoidalis - Northern pin oak - eastern North America
- Quercus emoryi - Emory oak - southwestern North America
- Quercus falcata - Southern red oak, or Spanish oak - southeastern North America
- Quercus gravesii - Chisos red oak - Mexico, southwestern North America (Texas)
- Quercus graciliformis - # - Extreme SW North America
- Quercus georgiana - Georgia oak - southeastern North America
- Quercus hirtifolia - Mexico
- Quercus hintoniorum - Mexico
- Quercus humboldtii - South American Oak # - northern South America
- Quercus hypoleucoides - Silverleaf oak # - southwestern North America
- Quercus hypoxantha - Mexico
- Quercus ilicifolia - Bear oak - eastern North America
- Quercus iltisii - Southern Mexico
- Quercus imbricaria - Shingle oak - eastern North America
- Quercus incana - Bluejack oak - southwestern North America
- Quercus inopina - # - southeastern 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 laurina - Mexico
- Quercus marilandica - Blackjack oak - eastern North America
- Quercus myrtifolia - Myrtle oak - southeastern North America
- Quercus nigra - Water oak # - eastern North America
- Quercus palustris - Pin oak - eastern North America
- Quercus parvula -Island scrub oak - California
- Quercus phellos - Willow oak - eastern North America
- Quercus polymorpha - Coahuila oak # - Mexico
- Quercus pumila - Runner oak - southeastern North America
- Quercus rhysophylla - Loquat-leaf oak # - Mexico
- Quercus rubra - Northern red oak - eastern North America
- Quercus salicifolia - Mexico
- ''Quercus sapotaefolia- # - Central America
- Quercus shumardii - Shumard Oak - southeastern North America
- Quercus tardifolia - Lateleaf oak - Extreme S.Texas
- Quercus texana - Nuttall's oak - south central North America
- Quercus velutina - Black oak - eastern North America
- Quercus wislizenii - Interior live oak # - southwestern North America
- Quercus dilatata - # -Himalaya (not sure what subgenus)
Notes
# 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.
External links
Fagaceae | Oaks | Lists of plants
Quercus espezieen zerrenda | Specie di Quercus