The Quercus Palustris
is commonly known as Pin Oak
, Spanish Oak
, Swamp Oak
, Swamp Spanish Oak
, as well as Water Oak< Go Back
Pin oak occurs primarily along major rivers and on glacial till plains
in the north-central and eastern United States. It is distributed from
southwestern New England; west to extreme southern Ontario, southern
Michigan, northern Illinois, and Iowa; south to Missouri, east Kansas,
and northeastern Oklahoma; and east to central Arkansas, Tennessee,
central North Carolina, and Virginia [19
The currently accepted scientific name of pin oak is Quercus palustris
]. It has been placed within the subgenus Erythrobalanus, or
red (black) oak group [22
]. There are no recognized varieties,
subspecies, or forms. Pin oak hybridizes with the following species
x Q. coccinea (scarlet oak)
x Q. imbricaria (shingle oak): Q. Xexacta Trel.
x Q. phellos (willow oak): Q. Xschochiana Dieck
x Q. rubra (northern red oak): Q. Xcolumnaris Laughlin
x Q. shumardii (Shumard oak): Q. Xmutabilis Palmer & Steyerm.
x Q. velutina (black oak): Q. Xvaga Palmer & Steyerm.
Pin oak is found in bottomland hardwood communities. There are four
variants of the SAF cover type pin oak-sweetgum (Liquidambar
styraciflua): white oak (Quercus alba)-pin oak-sweetgum, pin
oak-American elm (Ulmus americana), pin oak-red maple (Acer rubrum), and
pure pin oak . Nearly pure even-aged stands of pin oak are known as
"pin oak flats" . A pin oak-cherrybark oak (Quercus falcata var.
pagodifolia) community occurs in the Mississippi River Valley in
The following publication lists pin oak as a dominant species:
Forests of the Illinoian Till Plain of southwestern Ohio 
< Go Back
Much of the information presented here is attributed to:
Carey, Jennifer H. 1992. Quercus palustris. In: Fire Effects Information System, [Online].
U.S. Department of Agriculture, Forest Service,
Rocky Mountain Research Station, Fire Sciences Laboratory (Producer). Available at USDA Forest Service.