The Quercus Ellipsoidalis
is commonly known as Hill's Oak
, Jack Oak
, as well as Northern Pin Oak< Go Back
Northern pin oak has a limited range; it is largely confined to the
middle and western parts of the Great Lakes region. It occurs from
central Michigan east to noth-central Wisconsin, eastern Iowa, northern
Illinois, and northern Indiana. Disjunct populations occur in northern
Ohio, Arkansas, and extreme southeastern North Dakota [6
The currently accepted scientific name for northern pin oak is Quercus
ellipsoidalis E. J. Hill [21
]. It is in the subgenus Erythrobalanus, or
red (black) oak group [23
]. There are no recognized subspecies,
varieties, or forms.
Northern pin oak hybridizes with the following species [21
x Q. rubra (northern red oak)
x Q. velutina (black oak): Q. xpalaeolithicola Trel.
Northern pin oak is a common component in central upland deciduous
forest. It is pure or comprises a majority of the stocking in varying
mixtures with white oak (Quercus alba), black oak (Q. velutina), scarlet
oak (Q. coccinea), bur oak (Q. macrocarpa), or northern red oak (Q.
The following published classifications list northern pin oak as a
dominant or codominant species:
Classification of forest ecosystems in Michigan 
Field guide to forest habitat types in northern Wisconsin 
< Go Back
Much of the information presented here is attributed to:
Coladonato, Milo. 1993. Quercus ellipsoidalis. 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.